a hydrate of CoCl2 with a mass of 6.00 is heated strongly, after cooling the mass of the anhydrate is 3.27g. how many grams of H2O were lost from the hydrate

Answers

Answer 1
Mass of water = Mass before heating - mass after heating
Mass of water = 6.00 - 3.27
Mass of water = 2.73 grams

Related Questions

Why are carbon compounds that contain mercury and a greater environment concern than elemental mercury? ...?

Answers

Firstly mercury found in carbon compounds is more easily ingested and taken up by fish and therefore eaten by people causing poisoning. Found within carbon compounds it is also more likely to move up the food chain and become more concentrated.
Firstly mercury found in carbon compounds is more easily ingested and taken up by fish and therefore eaten by people causing poisoning. Found within carbon compounds it is also more likely to move up the food chain and become more concentrated.

Why does hot air rise and cold air sink??

Answers

Explanation:

In hot air, molecules have more kinetic energy and due to this they move from one place to another. As a result, there occurs more number of collisions between the molecules. Due to this molecules of hot air tend to rise.

Whereas when air is cold then its molecules are closer to each other. As a result, they do not have enough kinetic energy and they do not move from their initial position.

Hence, cold air sinks because of lack of movement in its molecules.

Hot air is less denser than cold air, which is why hot air rises and cold air sinks.

The invisible gaseous cloud that envelops the Earth and reaches into space is called air. About 78% of it is nitrogen, 21% is oxygen, and the remaining 2% or so is made up of different contaminants, water vapour, carbon dioxide, and other trace gases.

Air molecules move more quickly when it warms near the surface of the Earth or on the first level of a building, producing more space between them and making the air less dense than the cooler air above it. Cooler, more dense air sinks while warmer, less dense air rises. Since cooler air's molecule bonds absorb less energy than hot air's, cooler air is denser and hence heavier.

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How does the absorption of ultraviolet radiation by the ozone layer help sustain life? a. This process helps maintain the temperature of the Earth. b. It keeps a low level of harmful ultraviolet radiation from reaching living organisms. c. This process keeps ozone concentrations in the troposphere at lower levels. d. All of the above are true.

Answers

answer d is correct in options

Answer: d. All of the above are true.

Explanation: Ozone is a protective shield present in earth's stratosphere which absorbs the harmful radiations from the sun and thus keeps a low level of harmful ultraviolet radiation from reaching living organisms.

As the sun rays are absorbed by the ozone layer, not all the sun rays reach the earth's surface and thus the temperature of the earth is also maintained.

The ozone present in the troposphere also called as ground level ozone is harmful as it can trigger a variety of health problems and is formed by reactions of pollutants from vehicular emissions in the presence of sunlight. Thus ozone in stratosphere blocks the sunlight and thus prevents the formation of ground level ozone.

Thus all the statements are true.

In a machine shop, two cams are produced, one of aluminum and one of iron. Both cams have the same mass. Which cam is larger? (a) the aluminum cam (b) the iron cam (c) Both cams have the same size. ...?

Answers

The best and most correct answer among the choices provided by your question is the second choice or letter B.

The iron cam is larger than the aluminum cam even if with the same size.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

Answer:

A - The aluminum can

Explanation:

Aluminum has a lower density than Iron does.

Imagine having a beachball sized ball of both aluminum and iron... The aluminum ball would be nice and light but that iron ball would definitely crush your toes if you dropped it on your foot! Even if they're the same exact size, they have totally different weights.

Which is true about batteries?
A. They all contain graphite rods and zinc electrodes.
B. They all contain parallel cells that increase energy output.
C. They always contain different cells that work together to produce energy.
D.They often have identical cells in series to increase energy output

Answers

B. They all contain parallel cells that increase energy output.

Hope this helps!

Answer:

D.They often have identical cells in series to increase energy output

Explanation:

lol i stg thats the answer just took quiz on edge

What is the outermost layer of the earth?

Answers

The answer is the crust
The Earth's crust is the outermost layer of the earth.

how many sigma and pi bonds are there in phenol?

Answers

Phenol rocks 9 sigma (6 C-H, C-O, 2 O-H) and 3 pi bonds (1 C=O, 3 benzene ring).

There are 9 sigma bonds and 3 pi bonds in a phenol molecule.

Here's the step-by-step breakdown:

1. Sigma bonds:

Each single bond between carbon and hydrogen atoms is a sigma bond. There are 6 C-H bonds in the benzene ring, so there are 6 sigma bonds from these.There is one C-O single bond between the benzene ring and the hydroxyl group. This contributes another sigma bond.The O-H bond in the hydroxyl group is also a sigma bond.

2. Pi bonds:

The double bond between the carbon and oxygen atoms in the hydroxyl group consists of one sigma bond and one pi bond. So, there is one pi bond here.The benzene ring has a special delocalized structure with alternating single and double bonds. However, each of these bonds still involves one sigma bond and one pi bond. There are 3 double bonds in the benzene ring, so there are 3 pi bonds from these.

Therefore, in total, there are 9 sigma bonds (6 from C-H, 1 from C-O, 2 from O-H) and 3 pi bonds (1 from C=O, 3 from benzene ring) in a phenol molecule.

The complete question is here:

How many sigma and pi bonds are there in phenol?

some small hybrid cars and sport utility vehicles also have spoilers.what is their purpose? Is it the same or different from the spoiler on a sports car?

Answers

 Spoilers on hybrid cars and sport utility vehicles are usually designed to create a smoother, less turbulent airflow over the rear of the vehicle. This reduces drag (air friction). Sports car spoilers are most often designed to increase rolling friction, not to decrease air friction. Spoilers on different types of cars serve different purposes.
Final answer:

Spoilers in small hybrid cars, SUVs, and sports cars aim to reduce lift and drag and improve the grip of the car on the road. They are crucial for sports cars due to the high speeds involved. However, small hybrid cars and SUVs, contribute more towards aesthetics and fuel efficiency, but the principle of operation remains the same.

Explanation:

Spoilers are used in vehicles, including small hybrid cars and sport utility vehicles (SUVs), as well as sports cars, primarily to reduce lift and drag, and enhance the car's road grip. Generally, spoilers work on the principle of aerodynamics. For sports cars, in particular, the spoiler becomes more significant at high speeds, redirecting air flows to create a downward force that stabilizes the car, enhancing safety during high-speed maneuvers.

Although the purpose is fundamentally the same across all vehicles, the importance of spoilers may vary. In sports cars, with their high-speed indulgence, spoilers are essential components. On the other hand, for small hybrid cars and SUVs, brackets are used more for aesthetic appeal and fuel efficiency. However, the basic function of a spoiler in either scenario remains—to control airflow.

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2)
____________________ helps explain why there are a large number of marsupial mammal species in Australia and South America, two continents that were once connected.
A) Ozone production
B) Continental drift
C) The fifth mass extinction
Eliminate
D) The first mass extinction

Answers

The answer is B. Continental Drift (Confidently)



Ammonia is _____.
an acid
a base
a neutral

Answers

Ammonia is a "Basic."

So, option B is your answer.

Hope this helps!

Ammonia is a base! Have a blessed day!

-Steel jelly

Mexico City has an elevation of 7400 ft above sea level. Its normal atmospheric pressure is 589 mm Hg. At what temperature does water boil in Mexico City?

Answers

Final answer:

The boiling point of water in Mexico City, with an elevation of 7400 ft and an atmospheric pressure of 589 mm Hg, is lower than the sea level boiling point of 100°C. It would be approximately between 90°C and 95°C, although a nomogram or the Clausius-Clapeyron relation would be needed for a precise value.

Explanation:

At higher altitudes, such as Mexico City's elevation of 7400 ft, the atmospheric pressure is significantly lower than at sea level. This decreased pressure results in a lower boiling point of water. While the boiling point of water is 100°C at sea level (760 mm Hg), in Mexico City with an atmospheric pressure of 589 mm Hg, the boiling point is reduced. Based on Table 10.1.4, we can infer that as the altitude increases in places like Mexico City, the boiling point of water decreases. From Table 10.4.1, for example, we notice that at an elevation similar to Mexico City's, the boiling point can be several degrees lower than 100°C. Unfortunately, without the specific data for 589 mm Hg from these tables, we cannot give the exact boiling point temperature, but it would typically be between 90°C and 95°C.

To determine the exact boiling point at a specific altitude and pressure, such as Mexico City's, one would often use a nomogram or a formula derived from the Clausius-Clapeyron relation, which correlates temperature and pressure for the phase change between liquid and gas. To obtain a precise value for Mexico City, it is advisable to consult such a nomogram designed for this purpose.

which solution has a molality of 0.25m NaCl?

Answers

Molality can be expressed by moles of solute over kilograms of solvent. the question asks the molality of 0.25m NaCI is equal to 0.25 moles of NaCI over 1kg of water.

4NH3 + 5O2 4NO +6H2O

In an experiment, 3.25 g of NH3 are allowed to react with 3.50 g of O2. How many grams of NO are formed?

Please round final answers to the tenth position, one place after the decimal

Answers

Ask me anything if you have any doubt :-)

[tex]\boxed{2.6264752{\text{ g}}}[/tex] of NO is formed during the given reaction.

Further explanation:

Limiting reagent is the species or reagent in a chemical reaction according to which the amount of product is decided. It is completely consumed in the reaction.

Stoichiometry governs the amount of species present in the reaction by using the relationship between reactants and products.

The given reaction is as follows:

 [tex]{\text{4N}}{{\text{H}}_3} + {\text{5}}{{\text{O}}_2} \to {\text{4NO}} + 6{{\text{H}}_{\text{2}}}{\text{O}}[/tex]

The formula to calculate the moles of the substance is as follows:

[tex]{\text{Moles of substance}} = \dfrac{{{\text{Given mass of substance}}}}{{{\text{Molar mass of substance}}}}[/tex]             ...... (1)                                

Substitute 3.25 g for the given mass and 17.03 g/mol for the molar mass in equation (1) to calculate the moles of [tex]\text{NH}_3[/tex].

 [tex]\begin{aligned}{\text{Moles of N}}{{\text{H}}_3} &= \left( {\frac{{{\text{3}}{\text{.25 g}}}}{{17.03{\text{ g/mol}}}}} \right)\\&= 0.1908{\text{ mol}}\\\end{aligned}[/tex]

Substitute 3.50 g for the given mass and 31.98 g/mol for the molar mass in equation (1) to calculate the moles of [tex]\text{O}_2[/tex].

 [tex]\begin{aligned}{\text{Moles of }}{{\text{O}}_2} &= \left( {\frac{{{\text{3}}{\text{.50 g}}}}{{{\text{31}}{\text{.98 g/mol}}}}} \right)\\&= 0.1094{\text{ mol}}\\\end{aligned}[/tex]

According to the stoichiometry of this reaction, four moles of  reacts with five moles of [tex]\text{O}_2[/tex] to form four moles of NO and six moles of [tex]\text{H}_2\text{O}[/tex].

Calculate the moles of [tex]\text{O}_2[/tex] that react with and 0.1908 moles of [tex]\text{NH}_3[/tex] as follows:

[tex]\begin{aligned}{\text{Amount of }}{{\text{O}}_2} &= \left( {{\text{0}}{\text{.1908 mol N}}{{\text{H}}_3}} \right)\left( {\frac{{{\text{5 mol }}{{\text{O}}_2}}}{{4{\text{ mol N}}{{\text{H}}_3}}}} \right)\\&= 0.2385{\text{ mol }}{{\text{O}}_2}\\\end{aligned}[/tex]  

The above calculations concluded that 0.2385 moles of [tex]\text{O}_2[/tex] are needed to react with 0.1908 moles of [tex]\text{NH}_3[/tex] but only 0.1094 moles of  [tex]\text{O}_2[/tex] are present in the reaction mixture. Therefore, [tex]\text{O}_2[/tex] is present in limited quantity and is a limiting reagent.

Since [tex]\text{O}_2[/tex] comes out to be the limiting reagent, the formation of NO is governed by it. According to the reaction stoichiometry, five moles of [tex]\text{O}_2[/tex] produces four moles of NO. Therefore the amount of NO can be calculated as follows:

[tex]\begin{aligned}{\text{Amount of NO}} &= \left( {0.1094{\text{ mol }}{{\text{O}}_2}} \right)\left( {\frac{{4{\text{ mol NO}}}}{{5{\text{ mol }}{{\text{O}}_2}}}} \right)\\&= 0.08752{\text{ mol}}\\\end{aligned}[/tex]

Rearrange equation (1) to calculate the mass of the substance.

[tex]{\text{Mass of substance}}= \left( {{\text{Moles of substance}}} \right)\left( {{\text{Molar mass of substance}}} \right)[/tex]                     ...... (2)

Substitute 0.08752 mol for the moles and 30.01 g/mol for the molar mass in equation (2) to calculate the mass of NO.

 [tex]\begin{aligned}{\text{Mass of NO}} &= \left( {0.08752{\text{ mol}}} \right)\left( {30.01{\text{ g/mol}}} \right)\\&= 2.6264752{\text{ g}}\\\end{aligned}[/tex]

Learn more:

Calculate the moles of chlorine in 8 moles of carbon tetrachloride: https://brainly.com/question/3064603 How many grams of potassium was in the fertilizer? https://brainly.com/question/5105904

Answer details:

Grade: Senior School

Chapter: Mole concept

Subject: Chemistry

Keywords: limiting reagent, NH3, NO, H2O, O2, 2.6264752 g, moles, mass, molar mass.

An organism that contains chloroplasts is able to produce food by the process of

Answers

An organism that contains chloroplasts is able to produce food by the process of "Photosynthesis"

Hope this helps!

Explain how line spectra are used to identify elements and what they indicate about atoms

Answers

Electron transitions from higher to lower energy levels cause emission of energy in the form of electromagnetic waves, each with their own specific wavelength. Because the energy levels of elements are quantized, each transition has a specific energy difference. The collection of these transitions makes up the emission spectrum and each spectrum is unique to a specific element, allowing identification.

How many total atoms are in 0.240 g of P2O5?

Answers

Final answer:

To calculate the total number of atoms in 0.240 g of P2O5, you need to convert the mass to moles and then use Avogadro's number to find the total number of atoms.

Explanation:

To determine the total number of atoms in 0.240 g of P2O5, you first need to calculate the number of moles of P2O5 using its molar mass. The molar mass of P2O5 is 141.9446 g/mol. You can use the formula: moles = mass / molar mass. Plugging in the values gives: moles = 0.240 g / 141.9446 g/mol = 0.00169 mol.

Next, use Avogadro's number (6.022 x 10^23 atoms/mol) to calculate the total number of atoms. Multiply the number of moles by Avogadro's number:

total atoms = 0.00169 mol x 6.022 x 10^23 atoms/mol = 1.02 x 10^21 atoms.


Alpha particles cannot penetrate deeply into solids because they _____.

have low mass

have high mass

have low velocity

have high velocity

have no mass

Answers

Answer: Option (c) is the correct answer.

Explanation:

A particle that contains two protons and two neutrons bounded together is known as an alpha particle.

It is known that an alpha particle has a large mass and due to this they travel very slowly. As a result, they tend to have low velocity.

Hence, we can conclude that alpha particles cannot penetrate deeply into solids because they have low velocity.

Final answer:

Alpha particles can't penetrate deeply into solids due to their high mass. Their large size slows their speed of movement and intensifies their interaction with other atoms, further limiting their penetrating power.

Explanation:

Alpha particles cannot penetrate deeply into solids because they have high mass. An alpha particle is a particle consisting of two protons and two neutrons, which gives it a relatively heavy mass. This high mass limits the speed at which it can move and the distance it can travel, especially in a dense medium like a solid. To put it in perspective, imagine trying to throw a heavy ball through a heavy curtain - the heavier the ball, the less distance it will cover within the curtain. Similar is the case with alpha particles. These particles also have a positive charge, which makes them intensely interactive with other atoms, further limiting their penetration power.

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A scientist examining the periodic table sees that the element magnesium (Mg) has the atomic number of 12.

Based on this knowledge, what does the scientist immediately know is true about magnesium atoms?

Magnesium atoms have 12 protons.
Magnesium atoms have 6 protons and 6 electrons.
Magnesium atoms have 12 neutrons.
Magnesium atoms have 6 protons and 6 neutrons.

Answers

Atoms have protons, neutrons, and electrons.

The answer should be Magnesium atoms have 12 protons. This is because the atomic number of an element indicates how many protons there are. Hope this helps someone down the road!

Scientist call an organism that has two different alleles for a trait

Answers

they called the hybrids.

Does elements in group 2 lend electrons

Answers

Group two is a metal, and metals form either metallic or ionic bonds. In ionic bonds, the metal and nonmetal transfer electrons, rather than sharing them as covalent bonds do. Also, it is do*** not does because the word "elements" is not singular. 

Yes, Group 2 elements, the alkaline earth metals, lose two electrons to form +2 ions, achieving a noble gas electron configuration, and are typically found as compounds due to their reactivity.

The elements in Group 2 of the periodic table are known as the alkaline earth metals. These elements, which include beryllium, magnesium, calcium, strontium, barium, and radium, have two electrons in their outermost energy level.

In chemical reactions, these Group 2 elements tend to lose two electrons to achieve a noble gas configuration, resulting in a +2 oxidation state. This is because they seek to have a full valence shell, similar to the nearest noble gas in the periodic table.

Group 17 elements (halogens) aim to gain one electron to complete their valence shells, while Group 14 elements have the ability to gain or lose four electrons depending on the context. Group 1 elements, also known as alkali metals, readily lose one electron in chemical reactions.

The chemical reactivity of alkaline earth metals is significant, but not as high as their Group 1 counterparts, due to the higher energy required to remove two electrons. Yet, they are reactive enough that they are not found free in nature, only in compound forms. The reactivity and the +2 oxidation state dominate the chemistry of Group 2 elements.

Selenium has six valence electrons. What is the valence of selenium?

Answers

Answer:

Two electrons because you need 8 electrons to make a atom stable and selenium has 6 electrons.

Explanation:

Final answer:

The valence of selenium, typically -2, refers to its combining power based on its six valence electrons with the configuration 4s²4p⁴. In compounds, selenium tends to gain two electrons to fill its valence shell.

Explanation:

The valence of selenium is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.

Selenium has six valence electrons, as indicated by its valence electron configuration: 4s²4p⁴. This means in the fourth energy level (n = 4 shell), selenium has a total of six electrons that can interact with other atoms to form chemical bonds. The valence of selenium can vary depending on the type of compound it forms; however, it is typically -2, as it often seeks to gain two electrons to fill its valence shell and achieve a stable noble gas configuration.

What kind of bond holds together atoms within a molecule?

Answers

The bond holds together atoms within a molecule is ionic bonds, covalent bonds and metallic bonds.

There are three main types of chemical bonds that hold atoms together within a molecule:

1. Ionic bonds are formed when one atom donates electrons to another atom. The atom that donates electrons becomes a positively charged ion, and the atom that receives electrons becomes a negatively charged ion. The oppositely charged ions are attracted to each other by the electrostatic force.

2. Covalent bonds are formed when two atoms share electrons. The shared electrons are attracted to the nuclei of both atoms, which holds the atoms together. Covalent bonds can be either polar or nonpolar. Polar covalent bonds occur when the atoms share the electrons unequally, while nonpolar covalent bonds occur when the atoms share the electrons equally.

3. Metallic bonds are formed when metal atoms share their valence electrons with each other. The valence electrons form a "sea" of electrons that surrounds the metal atoms. The metal atoms are attracted to the sea of electrons, which holds the atoms together.

The type of bond that holds atoms together in a molecule depends on the elements that make up the molecule and the electronegativity of the atoms. Electronegativity is a measure of how strongly an atom attracts electrons. Atoms with high electronegativity tend to form ionic bonds, while atoms with low electronegativity tend to form covalent bonds.

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To fulfill the octet rule electron sharing leads to ____ electrons around each atom?
A. 4
B. 5
C. 6
D. 8

Answers

D. 8

You can predict it from it's name "Octet" means Eight. Atom must have that number of electron to have a stable structure!

Hope this helps!

the equation A+X AX is the general equation for a(n)

Answers

The following equation is the general form representation of 1 of the common types of chemical reactions, and that are the synthesis reactions.

A + X => AX
This is synthesis, where an specifically an element combines chemically with another element to produce a more complex compound, composed of those 2 elements.

Why is charcoal a limited drawing medium?

Answers

the reason why charcoal is a limited drawing medium is: 
You can only draw in black and white

which very much limit your choice of color palette

hope this helps

A gas of unknown identity diffuses at a rate of 83.3 mL/s in a diffusion apparatus in which carbon dioxide diffuses at the rate of 102 mL/s. Calculate the molecular mass of the unknown gas. Give your answers in units of g/mol to three significant figures.

Answers

Answer: 65.7 g/mol

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows:

[tex]\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}[/tex]

[tex]\frac{Rate_{X}}{Rate_{CO_2}}=\sqrt{\frac{M_{CO_2}}{M_{X}}}[/tex]

[tex]\frac{83.3}{102}=\sqrt{\frac{44}{M_{X}}[/tex]

Squaring both sides and solving for [tex]M_{X}[/tex]

[tex]M_{X}=65.7g/mol[/tex]

Hence, the molar mas of unknown gas is 65.7 g/mol.

COMPARE AND CONTRAST
PROPANE AND HEXANE ...?

Answers

In context|organic compound|lang=en terms the difference between propane and hexane is that propane is (organic compound) an aliphatic hydrocarbon, c3h8, a constituent of natural gas while hexane is (organic compound) any of five isomeric aliphatic hydrocarbons, c6h14 they are colorless, volatile liquids. As nouns the difference between propane and hexane is that propane is (organic compound) an aliphatic hydrocarbon, c3h8, a constituent of natural gas while hexane is (organic compound) any of five isomeric aliphatic hydrocarbons, c6h14 they are colorless, volatile liquids.


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I WIll upvote for answer
Balance the following reaction Fe^2 O ^3 +HCI+FeCI^3+H^2O

Answers

Let's balance step by step. We'll start with Iron (Fe)
Fe2O3 + HCl --> FeCl3 + H2O
We have 2 Fe on the left, and only one on the right, so we'll double the Fe on the right
Fe2O3 + HCl --> 2FeCl3 + H2O
Now we have six Cl on the right, and only one on the left, so we'll multiply the Cl by six on the left
Fe2O3 + 6HCl --> 2FeCl3 + H2O
Finally, we can balance the water, as we have 6 H and 3 O on the left, and 2 H and one O on the right, so we can triple the H2O on the right
Fe2O3 + 6HCl --> 2FeCl3 + 3H2O
The equation has been balanced.

_____ is a control mechanism that intensifies an earlier reaction. A sensory receptor An effector Negative feedback Positive feedback

Answers

Positive feedback is the answer.

The sensory receptors are nerve endings or specialized cells able to capture internal or external stimuli, and generate in response nerve impulses.

The answer is: A sensory receptor.

What is the difference between a molecule and a compound?

Answers

-A molecule consists of two or more atoms that are chemically joined together

Example of molecule: H2 (molecular hydrogen); it has two hydrogen atoms

-A compound IS a molecule that consists of two different types of elements

Example of compound: H2O (water); it has two hydrogen atoms and one oxygen atom
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Select all the properties of a shield volcano listed below. A. Basaltic lavaB. Violent eruptions C. Layered structure D. Found around the Ring of Fire E. Large amounts of pyroclastic material Select the correct answer.how does realism differ from romanticism?] What was the concept of "normalcy" based on? pride in winning the war - Im thinking this nostalgia for an earlier America America's expanding role in world affairs getting Britain and France to repay war loans An electric clothes dryer has a resistance of 16ohms. it draws 15 A of a current. what is the voltage, in volts, of the wall outlet that it is plugged into? which of the following best describes the growth in the western part of Washington growth was rapid-all of the above-growth led to some cities to reshape the geography of thir surroundings-growth brought many new opportunities but also led to new social problems- Which ordered pair is a solution to this equation?(x + 3) y = 14A. (3, 2)B. (5, 2)C. (11, 1)D. (7, 2) 24/4 = ?/1. 40/5 = ?/1 Which of the following conditions must be met in order to make a statistical inference about a population based on a sample if the sample does not come from a normally distributed population? Please help with the following:1. For what value(s) of "r" is 3r-6=7+3rA) all real numbersB)all negative numbersC)0D) no values of r2. What is the range of f(x)=[[x-1]]?A)all realsB)all integersC)all real > or = 1D)all integers > or = 1 Select the true statement. A) RNA is mostly single-stranded; DNA is always double-stranded. B) RNA and DNA usually have identical nitrogenous bases. C) Several types of DNA help regulate protein synthesis. What might you consider when youre studying the dynamics of a group? One end of a rope is fastened to a boat and the other end is wound around a windlass located on a dock at a point 4m above the level of the boat. If the boat is drifting away from the dock at the rate of 2m/min, how fast is the rope unwinding at the instant when the length of the rope is 5m? ...? Help???????? Match the climate zone in column 1 to the characteristic in column 2.Potential Matches:1 : On the equator2 : Mildest weather3 : Severe temperature changes4 : Near the equator Answer : Tropical : Dry : Moderate : Continental President Jackson introduced all of the following political procedures except I need help on this asap i'll give you so many points!! Which one is the greater quantity 1/3 of a box of corn crinkles or 50% of a box of corn krinkles Kate ate 1 out of 4 of her orange. ben eat 2 out of 4 of his banana. did kate and ben eat 1 out of 4 add 2 out of 4 equal 3 out of 4 of their fruit? explain Deep down, the young are lonelier than the old. I read this in a book somewhere and its stuck in my mind. As far as I can tell, its true. So if youre wondering whether its harder for the adults here than for the children, the answer is no, its certainly not. Older people have an opinion about everything and are sure of themselves and their actions. Its twice as hard for us young people to hold on to our opinions at a time when ideals are being shattered and destroyed, when the worst side of human nature predominates, when everyone has come to doubt truth, justice and God. According to Frank, why is the war harder on children than adults?A. Children are not as emotional as adults.B. Children care more about injustice than adults.C. Children are still trying to find themselves.D. Children are less idealistic than adults. Find the 9th term of the following geometric sequence: 1, 3, 9, 27. PLEASEEEEE HELP!!!!!! A. 5,661 B. 7,241 C. 2,456 D. 6,561 X+4y=6 y=-x+3 solve each system of linear equations by substitution