Answer:
Coefficient's are 2, 2, 1
Explanation:
We are given;
Unbalanced equation;
H₂O₂ → H₂O + O₂
We are required to determine the suitable coefficients that would balance the equation.
We need to know that for an equation to obey the law of conservation of mass it has to be balanced.Balancing involves making sure that the number of atoms of each element are equal on both sides of the equation.In this case;
To balance the equation we put the coefficients 2, 2, 1 respectively
Therefore;
The balanced equation is;
2H₂O₂ → 2H₂O + O₂
Thus, Suitable coefficients are, 2, 2, 1
Answer:
The answer is B)2,2,1
Explanation:
I just got it right on USA test prep
for multiple covalent bonds to form in molecules the molecules must contain carbon nitrogen or
For multiple covalent bonds to form in molecules, the molecules must contain carbon nitrogen or oxygen.
Explanation:
Think about carbon dioxide (CO2). If every oxygen atom imparts one electron to the carbon molecule, there will be 6 electrons in carbon particle and 7 electrons in every oxygen atom. This doesn't give the carbon atom as a total octet.Sometimes more than one set of electrons is shared between two atoms. In carbon dioxide, a second electron from every oxygen atom is likewise imparted with the central carbon atom, and the carbon particle imparts one more electron with every oxygen atom. Two sets of electrons shared between two atoms make a double bond between the atoms. A few particles contain triple bonds, covalent bonds in which three sets of electrons are shared by two atoms.what is the mass, in grams, of 0.0287 mol of sucrose
Answer: 9.82401 grams
What are the characteristics of an atom or molecule when in the gas phase
Answer:vapor
Explanation: Because it is
Answer:
nonrigid shape or volume; highly active and mobile
Explanation:
which is a determine factor for the direction a motor spins in an electric motor.
Answer:
Magnet determine factor for the direction a motor spins in an electric motor.
How many molecules are in one mole of NH3?
Answer:
1 mole of NH3 has 6.023×10^23 molecules.
Please this is due tomorrow!!!
A little quantity of trichloromethane (b.pt. 60° C) was added to a large quantity of ethanol (b.pt. 78°C). The most probable boiling point of the
resultant mixture is from
A. 69°C - 70°C
B. 70°C - 74°C
C. 82°C - 84°C
D. 60°C - 78°C
Answer:
the correct answer is C
The boiling point of the mixture of trichloromethane and ethanol is likely to be within the range of 60°C to 78°C. However, due to the larger quantity of ethanol with a higher boiling point, it is likely to be closer to 78°C.
Explanation:The boiling point of a mixture depends on the individual components and their proportions. Here, we have trichloromethane (boiling point 60°C) and ethanol (boiling point 78°C). Even though a small quantity of trichloromethane is added, since the boiling point of ethanol is higher, it is likely that the mixture will start to boil close to the boiling point of ethanol. The boiling point of most mixtures is typically within the range of the components' boiling points.
Therefore, we can say that answer D (60°C - 78°C) is a likely range for the resultant boiling point of the mixture, but the actual boiling point is more likely to be closer to 78°C, the boiling point of ethanol. The specific boiling point would depend on the exact proportions of the two substances in the mixture.
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2. What does it mean to say a bond is polar?
Answer:
Explanation:
Means in between two bonded atoms one is more electronegative than other the one which is more electronegative has partial negative charge and the other which has less electronegativity has partial positive charge
Final answer:
A polar bond refers to the unequal distribution of electron density between two atoms due to a difference in electronegativity.
Explanation:
The polarity of a bond refers to the unequal distribution of electron density between two atoms.
A bond is considered polar when there is a significant difference in electronegativity between the bonded atoms, resulting in one atom being more electron-attracting than the other.
For example, in a bond between hydrogen (H) and oxygen (O) in a water molecule (H2O), the oxygen atom is more electronegative than the hydrogen atoms, causing the oxygen atom to attract electrons and develop a partial negative charge (δ-) while the hydrogen atoms have a partial positive charge (δ+).
what is one characteristic of sulfur
Answer:
Sulfur is a soft, pale yellow, odorless, brittle solid. It is insoluble I. carbon disulfide. It burns with a blue flame, oxidizing to sulfur dioxide. Sulfur exists in several crystalline and amorphous allotropes.
Sulfur has the ability to form thiols which are known for their potent odors, a characteristic shared with oxygen as they are in the same group on the periodic table. Hydrogen sulfide is an example of a toxic sulfur compound with a strong smell.
Explanation:One characteristic of sulfur is its ability to form thiols, which are the sulfur analogs of alcohols. Thiols, such as methanethiol (CH3-SH) and the garlic odorant prop-2-ene-1-thiol (CH2=CH-CH2-SH), are known for their strong and often unpleasant odors. For example, methanethiol is present in oysters, cheddar cheese, onions, and garlic, contributing to their unique smells. Sulfur is part of the same group (6A) as oxygen on the periodic table, and mirrors some of oxygen's properties, including the ability to replace oxygen in organic compounds, such as alcohols, forming thiols. Hydrogen sulfide (H2S), another sulfur compound, is noteworthy for its colorless appearance yet potent smell of rotten eggs and its high toxicity, which is comparable to that of hydrogen cyanide.
How many molecules of the sweetener saccharin can be prepared from 30 C atoms, 25 H atoms, 12 O atoms, 8 S atoms, and 14 N atoms?
To determine the number of saccharin molecules in a given sample, you can use the molar mass and Avogadro's number. The molar mass of saccharin is 183.18 g/mol and Avogadro's number is approximately 6.022 x 10^23 molecules/mol. By plugging in these values and doing the appropriate calculations, you can find the desired quantities.
Explanation:To determine the number of molecules of saccharin that can be prepared, we need to first calculate the molar mass of saccharin. The formula for saccharin is C7H5NO3S, which gives a molar mass of (7*12.01) + (5*1.008) + (1*14.01) + (3*16.00) + 32.06 = 183.18 g/mol.
With this information, we can calculate the number of saccharin molecules in a 0.0400 g sample by using Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol. So, (0.0400 g / 183.18 g/mol) * (6.022 x 10^23 molecules/mol) = X molecules of saccharin.
To find the number of carbon atoms in the same sample, we can again use the molar mass and Avogadro's number. (0.0400 g / 183.18 g/mol) * (6.022 x 10^23 molecules/mol) * 7 carbon atoms/molecule = Y carbon atoms.
What is the meaning of the word organism
Answer:
B) any complex thing with properties normally associated with living things
Answer:
Organism is a creature such as plant ,animals and living things or a single-celled life form
Explanation:
The living creature is compared with the interdependent part of the organism. Some of the Example for the organism is dog, bacteria or unicellular animal-like amoeba. This organism can be classified by naming and grouping. The biology name of an organism is called Taxonomy. Classification of an organism help in exploring the unknown potential of many helpful organisms.Due to their classification we can restore the ecosystem, which is imbalanced today.
What type of energy does a rock resting on top of a hill have?
Electrical energy
Kinetic energy
Potential energy
Radiant energy
Answer:
Potential energy
Explanation:
What are the environmental pressures of the plant the cactus. Or what are the variations of the plant called the cactus
The most well-known threat is posed by human pressures brought on by the spread of agriculture, housing, and commercial space into cactus ecosystems .Cereus, Rebutia etc are a few of the more popular cacti groups.
A desert-dwelling plant with strong stems and sharp projections called spines. The term "cactus" is derived to the Greek word "kaktos," which was also the name of a kind of spiky plant that is frequently seen in Sicily: the cardoon. The word's earliest recorded use in English, describing the emerald-green, leafless plants found in the American desert, goes back to 1769. The most well-known threat is posed by human pressures brought on by the spread of agriculture, housing, and commercial space into cactus ecosystems .Cereus, Rebutia etc are a few of the more popular cacti groups.
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Calculate the volume of 0.413 mol of hydrogen gas at a temperature of 20°C and a pressure of 1200 torr.
Answer:
The volume is 6, 28 liters
Explanation:
The unit of pressure and temperature must be converted. 760 Torr = 1 atm and 0°C=273 K. 20+273=293K
760 Torr---1 atm
1200Torr--x= (1200 Torr x 1 atm)/760 Torr =1,58 atm
PV=nRT V=(nRT)/P
V= (0,413 mol x 0,082 L atm /K mol x 293K)/ 1,58 atm
V=6, 28 L
If 8.00 miles of NH3 of 10.00 moles of O2 react in the following reaction, how many moles of which reactant will be left over
Answer:
No moles will be left over of either reactant because both are limiting.
Explanation:
4NH₃ + 5O₂ → 4NO + 6H₂O
8 mol 10 mol
Why does food have potential energy?
Answer:
So that if we feel weak, energy is released through it so we can do work and do stuff like walk or think. It's like stored energy that can do things for the future.
Please give brainliest if it helped.
Food has potential energy because it contains stored chemical energy. The potential energy in food comes from the energy captured by plants through the process of photosynthesis.
During photosynthesis, plants convert sunlight, water, and carbon dioxide into glucose and other organic molecules.
Glucose, along with other carbohydrates, fats, and proteins present in food, is a rich source of potential energy.
The energy stored in these molecules is in the form of chemical bonds. When we consume food, our bodies break down these complex molecules through digestion and metabolic processes.
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What is the total amount of heat released when 94.0 g water at 80.0 °C cools to form ice at −30.0 °C?
Answer:
The total amount of heat released is 68.7 kJ
Explanation:
Given that:
mass of water = 94.0 g
moles of water = 94 / 18.02 = 5.216
80⁰C ------> 0⁰C --------> -30⁰C
Q1 = m Cp dT
= 94 x 4.184 x (0 - 80)
= -31463.68 J
= -31.43 kJ
Q2 = 6.01 x 10^3 x 5.216
= - 31348.16 J
= -31.35 kJ
Q3 = - 94 x 2.09 x 30
= - 5893.8 J
= -5.894 kJ
Total heat = Q1 + Q2 + Q3 = -31.43 kJ + (-31.35 kJ ) + (-5.894 kJ ) = -68.7 kJ
Total heat released = -68.7 kJ
Note that the "negative sign" simply indicates heat released, therefore no need to put it in the answer.
The total amount of heat released is 68.7 kJ.
Given:
Mass of water = 94.0 g
Moles of water = 94 / 18.02 = 5.216
Transformation of heat:80⁰C ------> 0⁰C --------> -30⁰C
Q₁ = m*Cp*dT
= 94 * 4.184 * (0 - 80)
= -31463.68 J
Q₁ = -31.43 kJ
Q₂ = 6.01 * 10³ * 5.216
= - 31348.16 J
Q₂ = -31.35 kJ
Q₃ = - 94 * 2.09 * 30
= - 5893.8 J
Q₃ = -5.894 kJ
Total heat = Q₁ + Q₂ + Q₃
Total heat = -31.43 kJ + (-31.35 kJ ) + (-5.894 kJ ) = -68.7 kJ
Total heat = -68.7 kJ
Total heat released = -68.7 kJ
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How is potential measured?
1.Intramolecular forces are between
aMolecules
bAtoms within a molecule.
cProtons and electrons
dProtons and neutrons
Answer:
b Atoms within a molecule
Explanation:
Intramolecular forces are usually found within a molecule. Molecules are made up of combinations of atoms.
They are also called interatomic forces which joins atoms together to form another atom.
These bond types determines the chemical properties of substances.
Examples are:
Ionic bondsPure covalent bondsCoordinate covalent bondsMetallic bondsProcess of genetic engineering
Genetic engineering is the process of using recombinant DNA (rDNA) technology to alter the genetic makeup of an organism. Genetic engineering involves the direct manipulation of one or more genes. Most often, a gene from another species is added to an organism's genome to give it a desired phenotype. It involves 3 steps:
(1) The isolation of DNA fragments from a donor organism;
(2) The insertion of an isolated donor DNA fragment into a vector genome
(3) The growth of a recombinant vector in an appropriate host.
An example of genetic engineering is production of insulin. In plants, genetic engineering has been applied to improve the resilience, nutritional value and growth rate of crops, for example, potatoes, tomatoes and rice.
In animals it has been utilized to develop sheep that produce a therapeutic protein in their milk that can be used to treat cystic fibrosis, or worms that glow in the dark to permit scientists to become more familiar with diseases such as Alzheimer’s.
Which is a component of cell theory
The generally accepted parts of modern cell theory include: All known living things are made up of one or more cells. All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms.
Answer: what they said ^ is correct :>
Btw whoever reads this I hope u do good!
Explanation:
The property of water in which it attaches to another surface is known as: *
Answer:
The property of water which makes it to attach or stick to another surface is Adhesion.
Explanation:
Adhesion is the characteristic ability a substance possess to stick to other substances. This is as a result of the covalent bond existing between the two hydrogen atoms and the one oxygen atom in the water molecule.
An example of the property of Adhesion is a water drop that stuck to the end of the pine needles
How many moles of calcium carbonate-CaCO3 = 4.15 g
Answer:
Number of moles = 0.042 mol
Explanation:
Given data:
Number of moles = ?
Mass of calcium carbonate = ?
Solution:
Formula:
Number of moles = mass/ molar mass
now we will calculate the molar mass of calcium carbonate.
atomic mass of Ca = 40 amu
atomic mass of C = 12 amu
atomic mass of O = 16 amu
CaCO₃ = 40 + 12+ 3×16
CaCO₃ = 40 + 12+48
CaCO₃ = 100 g/mol
Now we will calculate the number of moles.
Number of moles = 4.15 g / 100 g/mol
Number of moles = 0.042 mol
Determine the moles of NH3 that can form from 70.0 grams N2.
Hey there!
5 moles will be produced.
N₂ has a molar mass of 28.014 g/mol.
Convert 70g to mol:
70 ÷ 28.014 = 2.5
In N₂ there are 2 nitrogen atoms. In NH₃ there is 1 nitrogen atom.
So, there will be twice as many moles of NH₃ because every one molecule of N₂ will produce two molecules of NH₃.
2.5 x 2 = 5 moles
Hope this helps!
what is the relationship between carbon atoms and boiling point
The relationship between carbon atoms and boiling point is:
When carbon atoms' number is more, the boiling point is also higher. For the alkaline that have the formula [tex]\mathrm{C}_{\mathrm{n}} \mathrm{H}_{2 \mathrm{n}+2}[/tex], as the carbon atoms' number increases, the melting or boiling point gets increased.
The reason for this is that long chain molecules have higher boiling points. This is because these long chains get wrapped around and it is very difficult to separate them whereas in shorter chains, they have weak forces and it is easy to separate them.
Molecules that have a strong bonding between them have a greater inter molecular force and so cannot move easily. Hence the kinetic energy is also slow between these molecules. Such molecules have higher boiling point.
what is caliper used for
A caliper is a device used to measure the distance between two opposite sides of an object.
are plastic bags organic or inorganic?
Answer:
nilon is inorganic so they can be in the soil up to 5000 years
Explanation:
Answer: The answer would be INORGANIC
Explanation:
i did the test
is ammonium hydroxide a strong base
Answer:
No
Explanation:
Ammonium hydroxide is a weak base and not a strong base.
What is a base?
A base is any substance that interacts with water to produce or yield excess hydroxide ions in an aqueous solution.A strong base is one that ionizes completely in solution. Most strong bases are hydroxides of alkali and alkaline earth metals.
A weak base is one that partially or slightly ionizes in an aqueous solution.
Such is ammonium hydroxide;
NH₃ + H₂O ⇄ NH₄⁺ + OH⁻
In the ionization of a weak base, the process results in an equilibrium reaction.
What numbers should be added to the blanks to balance this chemical equation? ___F2 + __ H20 --------> ___OF2 + ___HF
A) 2,2,1,2
B)2,1,1,2
C)3,2,1,4
D)1,2,2,1
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
[tex]2F_2+H_2O\rightarrow OF_2+2HF[/tex]
Thus in the reactants, there are 2 atoms of hydrogen , 1 atom of oxygen and 4 atoms of flourine.Thus there will be atoms of hydrogen , 1 atom of oxygen and 4 atoms of flourine in the product as well.
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How many Liters are in 13 moles Acetylene (C2H2) at STP?
Answer:
291.2L
Explanation:
Given parameters:
Number of moles of acetylene = 13moles
Unknown:
Volume of acetylene at STP = ?
Solution:
The problem can be solved by applying the equation that shows the relationship between the volume of gases at STP and their number of moles.
Volume of gas at STP = number of moles x 22.4
Input the variables and solve;
Volume of gas at STP = 13 x 22.4 = 291.2L
Final answer:
To find the number of Liters in 13 moles of Acetylene (C2H2) at STP, we use the Ideal Gas Law equation. Plugging in the given values, we find that there are approximately 302.19 Liters.
Explanation:
To determine the number of liters in 13 moles of acetylene (C2H2) at STP, we need to use the Ideal Gas Law. The Ideal Gas Law equation is PV = nRT, where P is pressure, V is volume, n is moles, R is the ideal gas constant, and T is temperature. At STP (standard temperature and pressure), the pressure is 1 atm and the temperature is 273.15 K. Since we are given the number of moles (13) and want to find the volume, we rearrange the equation to solve for V: V = nRT/P.
Plugging in the values, we get V = (13 mol)(0.08206 L·atm/mol·K)(273.15 K)/(1 atm) = 302.19 L.
Write a balanced equation for zinc sulfate heptahydrate + sodium carbonate —> zinc carbonate + sodium sulfate
Answer:
I gotta go - but think heat or solubility, what can you drive away with heat and by what is it is not soluble...it is a catch all answer - but rarely is there ONE WAY ONLY! Good luck.
Explanation:
The balanced chemical equation for the reaction between zinc sulfate heptahydrate and sodium carbonate is: ZnSO₄•7H₂O + Na₂CO₃ → ZnCO₃ + Na₂SO₄ + 7H₂O.
To write a balanced chemical equation for the reaction between zinc sulfate heptahydrate (ZnSO₄•7H₂O) and sodium carbonate (Na₂CO₃), we follow these steps:
Step-by-Step Solution:
Write the unbalanced equation: ZnSO₄•7H₂O + Na₂CO₃ → ZnCO₃ + Na₂SO₄ + 7H₂OIdentify the states of the compounds: ZnSO₄•7H₂O (aq), Na₂CO₃ (aq), ZnCO₃ (s), Na₂SO₄ (aq), 7H₂O (l).Break down the compounds into their respective ions:Balanced Equation:
ZnSO₄•7H₂O (aq) + Na₂CO₃ (aq) → ZnCO₃ (s) + Na₂SO₄ (aq) + 7H₂O (l)