Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

They would form a single covalent bond and become Br2.

They would become a covalent bond and become Br2.  

Answer:

1000 grams or 1 kg

Explanation:

All that matters for this question is the volume of the object (1000 mL) and that the density of the object is more than the density of water.

Since the density of water is 1 gm/ mL and 1000 mL have been displaced, the answer is 1000 grams or 1 kg. You can actually calculate this from a formula.

density = mass / volume

density = 1 gram/ml

Volume = 1000 mL

mass = ?

mass = volume * density.

mass = 1000 mL * 1 gram / mL

mass = 1000 grams

Notice how you are focusing on the volume of the object and the mass of the water.

Answer:

Alpha radiation

Explanation:

Polonium-212 decays to lead-208 by emission of an alpha particle according to the following equation.

²¹²₈₄ Po →²⁰⁸₈₂ Pb +⁴₂ He + Energy.

Te alpha particle is a helium particle. It has 2 protons and 2 neutrons.

Answer:

0.019 g.

Explanation:

where, P is the pressure of the gas in atm (P = 1.02 atm).

V is the volume of the gas in L (V = 15.0 L).

n is the no. of moles of the gas in mol (n = ??? mol).

R is the general gas constant (R = 0.0821 L.atm/mol.K),

T is the temperature of the gas in K (T = 28°C + 273 = 301.0 K).

∴ n = PV/RT = (1.02 atm)(15.0 L)/(0.0821 L.atm/mol.K)(301.0 K) = 0.62 mol.

no. of moles = mass/molar mass.

∴ mass of oxygen = (no. of moles)(molar mass) = (0.62 mol)(32.0 g/mol) = 0.019 g.

Answer:

.3044

q = mass x specific heat x (Tfinal-Tionitial)

q = -7500. Substitute and solve for Tfinal

Explanation:

Please mark brainliest and have a great day!

Answer:

0.200 mol/L  

Explanation:

1. Moles of nitrate in first solution

Moles = volume × concentration  

n = 0.0100 L × 0.350 mol/L =0.003 500 mol

2. Moles of nitrate in second solution

n = 0.0500 L × 0.170 mol/L = 0.008 500 mol

3. Total moles of nitrate

n = 0.003 500 + 0.008 500 = 0.012 000 mol

4. Total volume of solution

V = 10.0 + 50.0 = 60.0 mL = 0.0600 L

5. New concentration of nitrate

c = moles/litres

c = 0.012 000 mol/0.0600 L = 0.200 mol/L

The molar concentration of nitrate ion is 0.200 mol/L.

Answer:

A.

Explanation:

Smaller insects can walk on water due to surface tension. The force that a smaller insect makes on the water is less than the water and as such the bug will "float."

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Hyy mate......

Here is your answer ......

1️⃣Name: Oxygen

2️⃣State : non-metal

3️⃣Family:Oxide

4️⃣Protons: 8

Electron:8

Neutron: 8

Hope it will help you...

Thanks for asking....

Answer- The correct choice of answer out of all would be option C.

Explanation

The given substance magnesium chloride made out of combination of chlorine and magnesium is a compound. Where magnesium has two positive ions and chlorine has two negative ions which trigger the reaction.

Hence the oxidation of the 2 positive ions of Magnesium takes place  and reduction of the Negative Ion chlorine has to offer attract and stabilize each other by forming the compound .

Answer:

sublimation

Explanation:

the other choices release energy

Hey mate here's your answer

Ans: B, Sublimation. This is because you must input energy in order to get a solid to go directly to a gas while the other ones release energy (and dispersion has nothing to do with these at all)

hope so the following may help you thanks

Answer : The formula unit of compound will be, [tex]PbO_2[/tex]

Explanation :

As we know that one atom of oxygen contains (2-) charge and one atom of lead contains (4+) charge. So, to balance the of charges of lead, the 2 oxygen atoms combine with the 1 lead atom. Thus, the compound formed will be, [tex]PbO_2[/tex].

That means, when [tex]Pb^{4+}[/tex] combine with oxygen that is, [tex]O^{2-}[/tex], it gives [tex]PbO_2[/tex] by the criss-cross method.

Criss cross method : It is a method of determining the chemical formula.

The formula unit is a shown below.

Answer:

Pb02

Explanation:

guy above was correct i just took my test

Answer:

Approximately 56.8 liters.

Assumption: this gas is an ideal gas, and this change in temperature is an isobaric process.

Explanation:

Assume that the gas here acts like an ideal gas. Assume that this process is isobaric (in other words, pressure on the gas stays the same.) By Charles's Law, the volume of an ideal gas is proportional to its absolute temperature when its pressure is constant. In other words

[tex]\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1}[/tex],

where

Convert the temperatures to degrees Kelvins:

[tex]T_1 = \rm 25^{\circ}C = (25 + 273.15)\; K = 298.15\; K[/tex].

[tex]T_2 = \rm 35^{\circ}C = (35 + 273.15)\; K = 308.15\; K[/tex].

Apply Charles's Law to find the new volume of this gas:

[tex]\displaystyle V_2 = V_1\cdot \frac{T_2}{T_1} = \rm 55\;L \times \frac{308.15\; K}{298.15\; K} = 56.8\; L[/tex].

Answer:

Ionic bonds hold charged particles in solid NaCl together, such that they are unable to move or conduct electricity.

Explanation:

Consider an electric current that flows through a conductor: charge moves in a uniform direction from one end of the conductor towards the other.

Thus, there are two conditions for a substance to conduct electricity:

A conductor of electricity shall meet both requirements.

Now, consider the structure of solid NaCl [tex]\rm NaCl\;(s)[/tex]. NaCl is an ionic compound. It contains an ocean of oppositely charged ions:

Ions carry charge. Thus, solid NaCl contains charged particles and satisfies the first condition.

Inside solid NaCl [tex]\rm NaCl\;(s)[/tex], electrostatic attractions ("ionic bonds") between the oppositely charged ions hold these ions in rigid ionic lattices. These ions are unable to move relative to each other. As a result, they cannot flow through the solid to conduct electricity. Under solid state, NaCl is unable to satisfy the second condition.

As a side note, melting NaCl into a liquid breaks the ionic bonds and free the ions from the lattice. Liquid NaCl is a conductor of electricity.

NaCl(s) does not conduct electricity because, in its solid state, the sodium and chloride ions are held in a fixed lattice structure and cannot move freely.

Electrical conductivity in a substance is dependent on the presence of charged particles that can move freely. In the case of sodium chloride (NaCl), which is an ionic compound, the structure is composed of sodium cations (Na^+) and chloride anions (Cl^-) arranged in a crystalline lattice. When NaCl is in the solid state, the ions are locked into place by strong electrostatic forces of attraction between the oppositely charged ions. These forces hold the ions in a rigid, three-dimensional array, preventing them from moving about freely.

For a material to conduct electricity, it must have mobile charge carriers. In metals, these charge carriers are delocalized electrons that can move throughout the metal. In ionic solutions or molten ionic compounds, the ions themselves are the charge carriers, and they can move when an electric field is applied. However, in solid NaCl, the ions are immobile due to the lattice structure, and thus, there are no free charge carriers to transport electric charge. As a result, solid NaCl does not conduct electricity.

When NaCl is dissolved in water or melted into a liquid, the ions are no longer fixed in place and can move freely. In this state, NaCl does conduct electricity because the ions can act as charge carriers, moving towards the electrodes of opposite charge under an applied electric field

Answer:The number of moles will remain the same in the two cases

so we can equate using ideal gas equation which is PV =nRT

V2 = 3100 L

Explanation:

Answer: E.   3100 liters

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas = 150 atm

[tex]P_2[/tex] = final pressure of gas = 1 atm

[tex]V_1[/tex] = initial volume of gas = 20 L

[tex]V_2[/tex] = final volume of gas = ?

[tex]T_1[/tex] = initial temperature of gas = [tex]27^oC=273+27=300K[/tex]

[tex]T_2[/tex] = final temperature of gas = [tex]37^oC=273+37=310K[/tex]

Now put all the given values in the above equation, we get the final pressure of gas.

[tex]\frac{150atm\times 20L}{300K}=\frac{1atm\times V_2}{310K}[/tex]

[tex]V_2=3100L[/tex]

Therefore, the volume of the baloon is 3100 L.

Answer:

The pressure remains constant

Explanation:

this is an example in charles law where as the temperature increases so does the volume.

Answer:

The correct answer is "Pressure".

Explanation:

As the propane torch is ignited inside the hot air balloon, the volume of the gas increases and the temperature of the gas also increases. This causes the density of the gas to decrease, keeping the pressure constant throughout the balloon, regardless of the small amount of gas lost through the balloon hole.

Have a nice day!

Answer:

The last option

Explanation:

The Bohr model was an attempt to explain atomic hydrogen's spectrum. This was done by establishing energy levels of separate electron orbits in the atom.Thos model was followed by the Schrödinger model.

Bohr's model built upon Rutherford's by establishing that electrons move around the nucleus in certain paths or 'shells', and focusing more on the location and energy of electrons, a crucial component in understanding atomic structure and behavior.

Bohr’s model added new elements to Rutherford’s model, demonstrating a better understanding of the atom's structure and behavior. One of the key differentiating factors was Bohr's idea that electrons orbit around the nucleus in set paths (or energy levels).

While Rutherford's model did identify the nucleus as positively charged and indicated that a large volume of space surrounds it, it didn't provide a specific path for the electrons' movement. The Bohr model, in contrast, presented the concept of quantized energy levels. According to this model, electrons could occupy specific energy levels and could jump between these levels by absorbing or emitting discrete amounts of energy.

So, to answer your question, Bohr's model, unlike Rutherford’s, established that electrons move around the nucleus in certain paths or 'shells', and it focused more on the location and energy of electrons, which was key to understanding atomic structure and behavior.

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Answer:

rising pressure and decreasing temperature

Explanation:

Reversible reactions have a bit practical interest, but in some cases the technological benefit or profitability of production requires a shift in the equilibrium of a reversible reaction.

Increasing pressure

With increasing pressure on this system, the concentration of substances increases. In this case, the balance will shift towards smaller volumes. On the left side of the equation, two volumes of nitrogen react with one volume of hydrogen. On the right side of the equation there are two volumes of ammonia, i.e. the number of volumes on the right side of the equilibrium reaction is less than on the left and, therefore, with increasing pressure, the reaction equilibrium will shift to the right.

Decreasing temperature

When the temperature rises, the equilibrium shifts towards the endothermic reaction, and when the temperature decreases, towards the exothermic reaction and the reaction given above is the exothermic.

To optimize the yield of ammonia in the Haber process, increasing system pressure shifts the chemical equilibrium towards producing more NH3. This results in a higher production rate and economic efficiency, aligning with industrial goals.

In the context of chemical engineering, changing the chemical equilibrium in the production of ammonia (NH3) from nitrogen (N2) and hydrogen (H2) gases can highly benefit a chemical company. The Haber process is grounded in the reaction: N2 + 3H2 ⇌ 2NH3 + energy. By adjusting conditions such as pressure and temperature, the yield of ammonia can be increased according to Le Chatelier's Principle.

To shift the equilibrium towards the formation of more NH3, increasing the pressure of the system is effective because the reaction results in a decrease in the number of gas particles. According to the balanced chemical equation, we start with 1 mole of nitrogen and 3 moles of hydrogen to get 2 moles of ammonia. Since the reaction produces fewer gas particles as products, an increase in pressure will favor the production of ammonia, thus potentially increasing the yield and efficiency of the process.

Increasing the pressure is also practical considering industrial production constraints. The benefits of manipulating the chemical equilibrium in this manner include increased production rates and improved economic efficiency, as higher yields of ammonia mean more effective use of feedstock gases, which contributes to cost savings for the company.

Answer:

i think b

Explanation:

Answer:

None of the above.

Explanation:

a, c, and d are correct.

a. In a reaction at equilibrium, the forward and reverse reactions are occurring at the same rate.

c. If the position of equilibrium lies to the right, the forward reaction has "gone further" than the reverse reaction.

d. Even if the position of equilibrium is far to the right, the balanced equation for the equilibrium has equal numbers on each side of the equation. For example, in the equilibrium reaction 2H₂ + O₂ ⇌ 2H₂O, the position of equilibrium is far to the right but there are equal atoms on each side of the reaction.

b. is wrong. It is exceptionally rare for reactants and products to have the same concentrations at equilibrium.

Answer:

I believe it's B.

Explanation:

Hope my answer has helped you!

Dissolved in water, has been defined as the solute surrounded by the water molecules. Thus, option C is correct.

Dissolution has been defined as the process of the formation of solution with the addition of solute molecules in the solvent molecules.

The dissolution has been achieved with the addition of the solute molecules in the water. The water molecules tend to act the absorbent and surrounds around the solute particles.

There has been a formation of micelle like structure that has been mediated in the dissolution of the compound in water.

Thus, dissolved in water has been defined as the solute surrounded by the water molecules. Thus, option C is correct.

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Answer:

It is surrounded by water molecules.

Explanation:

Js did it ^v^

Answer:

Distillation

Explanation:

If the solute is a solid or a liquid with a boiling point at least 30 °C different from that of the solvent, you can use the technique of distillation.

The solvent will boil before the solid or a higher-boiling liquid.

A liquid solute with a lower boiling point than the solvent will boil off first, and then you can distill off the solvent.

Answer:

Distillation

Explanation:

Distillation is a process known long ago and according to some authors was created by the Alchemists at a time where Chemistry was not yet recognized as Science and was closely linked to religious precepts.

Basically the distillation process is a process of physical separation and is used to separate homogeneous mixtures from heating. To separate a solid-liquid type mixture we use simple distillation and to separate liquid-liquid mixtures we use fractional distillation.

Answer:

5.6 * 10^3

this is because when thinking about scientific notation you know that you have to include a decimial and how many times you are moving it and whether it is a negative of a positive.

this means that you would take 5600 and you would put the decimal inbetween 5 and 6 because they are significant numbers and then you would have to figure out how many places to the right you need to go inorder to make it 5600

meaning you have to move it three times therefore it becomes

5.6 * 10^3

[tex]5.6*10^{3}[/tex]  is the correct way to represent 5600 L using scientific notation.

In case your decimal quantity is extra than 10, rely on the number of instances of the decimal movements to the left, and upload this variety to the exponent. division: To divide numbers in medical notation, first divide the decimal numbers. Then subtract the exponents of your strength of 10.

To alternate more than a few from scientific notation to traditional form, circulate the decimal point to the left (if the exponent of ten is a poor variety), or to the right (if the exponent is fine). You must pass the point as often as the exponent indicates. Do no longer write the strength of ten anymore.

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Answer:

B. The dilute solution contains less solute than the concentrated solution.

Explanation:

A diluted solution is a solution that has less solute (what is being dissolved) dissolved in the solvent (what is dissolving). A concentrated solution is the opposite, it has more solute than dissolved by the solvent.

A simple example is when you make iced tea (with powder). If you want a strong taste, you add more iced tea powder (solute) to the water (solvent) so it is more concentrated. If you want less, you add more water to dilute it.  

Answer:

Explanation:

The hydroxyl ion concentration of the solution [OH⁻] is 5.5 x 10⁻¹⁰M

Problem:

To find [H₃O⁺] and the pH of the solution:

We know that the ionic product of water has been experimentally determined and it is given for a pure water as 1.0 x 10⁻¹⁴mol²dm⁻⁶ at 25°C.

So : [H₃O⁺][OH⁻]= 10⁻¹⁴mol²dm⁻⁶ at 25°C

To find the concentration of the hydroxonium ions:

                         [H₃O⁺] = [10⁻¹⁴] / [OH⁻]

                          [H₃O⁺] = 10⁻¹⁴ / 5.5 x 10⁻¹⁰ = 1.8 x 10⁻⁵M

To find the pH of the solution, we know that ;

      pH = -log[H₃O⁺] = -log  1.8 x 10⁻⁵ = 4.74

The solution is acidic

Answer:

will shift to right

Explanation:

this will result in the formation of more product

According to Le Chatelier’s principle, when the concentration of reactants is doubled the equilibrium shifts to the right to favour the formation of products and the correct option is option 1.

Chemical equilibrium refers to the state of a system in which the concentration of the reactant and the concentration of the products do not change with time, and the system does not display any further change in properties.

It is the state of a reversible reaction where the rate of the forward reaction equals the rate of the reverse reaction. While a reaction is in equilibrium the concentration of the reactants and products are constant.

Therefore, According to Le Chatelier’s principle, when the concentration of reactants is doubled the equilibrium shifts to the right to favour the formation of products and the correct option is option 1.

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Chain reaction is best described as neutrons from splitting atoms continue to split other atoms, releasing more neutrons.

This is referred to as a subatomic particle which has a neutral charge and is produced in preceding fusion of the chain reaction.

The neutron produced initiates the splitting of the atoms which was why option A was chosen in this regard.

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A chain reaction, in the context of nuclear physics, is when neutrons released from a fission event cause other atoms to undergo fission. An example is the fission process of uranium-235, which releases additional neutrons that can trigger further fission, thus leading to an exponentially increasing reaction.

The best description for a chain reaction among the options presented is: 'Neutrons from splitting atoms continue to split other atoms, releasing more neutrons' (Option A). This process refers to a series of nuclear fissions (splitting of a nucleus), where the released neutrons from one fission event cause further fissions. As an example, when undergoing fission, uranium-235 (U-235) produces two medium-sized nuclei and releases two or three neutrons. These neutrons can then cause the fission of other U-235 atoms, which in turn provide more neutrons that can cause more fissions, leading to a nuclear chain reaction.

However, it should be noted that a chain reaction depends on several factors, including how many neutrons are produced in an average fission and how easy it is to induce a particular type of nuclear fission.

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Answer:

45.03 mL.

Explanation:

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

(V₁T₂) = (V₂T₁).

V₁ = 50.0 mL, T₁ = 119ºC + 273 = 392 K,

V₂ = ??? mL, ​T₂ = 80ºC + 273 = 353 K.

∴ V₂ = (V₁T₂)/(T₁) = (50.0 mL)(353 K)/(392 K) = 45.03 mL.

To find the final volume of a gas sample when cooled from 119ºC to 80.0ºC at constant pressure, we use Charles's Law, resulting in an approximate final volume of 45.0 mL.

To solve this, we use Charles's Law, which states that for a given mass of gas at constant pressure, the volume is directly proportional to its temperature in Kelvin.

First, convert the temperatures from Celsius to Kelvin:

Final temperature (T₂): 80.0ºC + 273.15 = 353.15 K

Using Charles's Law (V₁/T₁ = V₂/T₂):

Initial volume (V₁) = 50.0 mL

392.15 K / 50.0 mL = 353.15 K / V₂

Rearrange to solve for the final volume (V₂):

V₂ = (50.0 mL × 353.15 K) / 392.15 K

V₂ ≈ 45.0 mL

So, the final volume of the gas is approximately 45.0 mL.

The correct option is D.

Chemicals can have both beneficial and harmful effects on the environment, depending on their type, use, and context.

The effect of chemicals on the environment is a complex and multifaceted issue, and it cannot be simplified into a single option. Instead, the most accurate explanation is that:

Chemicals can be helpful or harmful to the environment.

Here's a detailed breakdown of this answer:

1. Harmful Effects of Chemicals:

2. Beneficial Effects of Chemicals:

3. Context Matters:

In conclusion, chemicals can have a range of effects on the environment, and their impact can be both beneficial and harmful. It's essential to consider the specific chemical and its application within a broader environmental context to make informed decisions about their use and regulation.

The complete question is here:

Which best explains the effect of chemicals on the environment?

A. Chemicals are only harmful to the environment.

B. Chemicals do not affect the environment.

C. Chemicals are only helpful to the environment.

D. Chemicals can be helpful or harmful to the environment.

Answer:

C

Explanation:

4(Al)+3(O2)==2(Al2O3)

Also, i'm in sixth grade just took a leson on a text book so may be wrong but i'm prety sure it's the correct nswer because x(Al)+y(O2) can not make hydregen for the h2o and for b, al+so2 = al2O3 makes sense but where did the sulfer go?

Answer:

C- 1, 2 and 5

Explanation:

There are many reactions that occur in the world, and one of the more important ones are known as combustion reactions. These reactions always involve the reaction between oxygen and another element/molecule/compound. So automatically, option 2 needs to be correct, so any answer that does not have option 2 in it (B) is incorrect.

Another important factor of combustion reactions is that they give off heat, because they are exothermic reactions, however since there is no indication of energy levels, so the answer in this question cannot be determined through that method.

One important law in all reactions is the conservation of matter, so whatever atoms enter the chemical reaction, have to exit the chemical reaction (no atoms can suddenly appear without having been there originally. For example, if only oxygen and hydrogen enter a reaction, only a product with oxygen and hydrogen can exit the reaction, it is impossible to have a product containing chlorine, if no chlorine was part of the reactants). By this logic, it is impossible to have water (H₂O) as a product, if the reactants are 1 and 2 (Al and O₂), hence option A is incorrect.

The only other option left is option C, and this option is correct because the overall balanced reaction would look like such:

4Al + 3O₂ --> 2Al₂O₃

This reaction obeys the law of conservation of matter, hence, Option C is correct.