Antifreeze has a density of 0.79 g/mL. What mass of antifreeze, in grams, is required to fill a 2.5
gallon car radiator?
Note: 1 gallon = 3.785

Answer:

The equation says that for every 1O2 , there are 2H2O produced. Therefore, if you have 2.2O2 , you must have 2.2⋅2H2O , or 4.4 moles of H2O

Answer:

She should expect for the scale to say 145 grams.

Explanation:

Limestone is mostly made up of the mineral calcium carbonate (CaCO3). But if you add an acid, you add hydrogen ions (H+), which will react with the carbonate to form hydrogen carbonate HCO3- ions, which are very soluble in water, and the limestone will dissolve. So, if you add 100+45 you get 145.

The true statements about catalysts are the statement 1,2 and 3.

1. Catalysts increase the rate of reaction: Catalysts facilitate chemical reactions by providing an alternative reaction pathway with lower activation energy. They enhance the rate of the reaction without being consumed in the process.

2. Catalysts behave as reactants in the reaction mixture: Catalysts participate in the reaction by interacting with the reactants. They form temporary bonds with the reactant molecules, leading to the formation of an intermediate complex that ultimately results in the desired products.

3. Catalysts decrease the activation energy of a reaction: Catalysts lower the energy barrier required for a reaction to occur by providing an alternative pathway with a lower activation energy. This enables the reactants to overcome the energy barrier more easily, thus increasing the reaction rate.

4. Catalysts show no physical change at the end of the reaction: Catalysts are not consumed or permanently altered in the reaction. They remain chemically unchanged and are available to participate in subsequent reaction cycles.

The statement "Catalysts are required in large concentrations in a reaction" is false. Catalysts work effectively even in small concentrations, as their role is to facilitate the reaction rather than being directly involved in the stoichiometry of the reaction.

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Answer:it’s b

Explanation:I took. The test and got 100

Answer:

a- i know the other person said that it was b but i looked it but and it seems to be A. whoops-

Explanation:

Answer:

Burn the coal!!!!

Explanation:

Answer :
Burn it

Explanation:

Kinetic energy is the energy of motion. Sometimes, this motion is internal.

When coal is heated, the atoms and molecules inside of the coal can gain a large amount of kinetic energy. This is experienced as heat.

The best way to release all of a chunk of coal's internal kinetic energy is to burn it.

Answer:

Your body can cool itself by sweating. When sweat evaporates, it lowers your temperature

Explanation:

Answer:

If there are more products than reactants, that means the reaction has shifted towards the left, which is the backward direction. If there are more reactants than products, that means the reaction has shifted towards the right, which is the forward direction.

Answer:

Increases

Explanation:

The gravitational potential energy of an object increases as you bring it higher with respect to the ground.

Gravitational potential energy depends on the mass, height and gravity between two bodies;

   Gravitational potential energy  = mgh

m is the mass

g is the height

h is the height

The equation of the reaction leading to the formation of the precipitate is; \(PbCl_{2}(aq) + Na_{2} SO_{4} (aq) ---- > PbSO_{4}(s) + 2NaCl(aq)\)

We define a precipitate as a compound that can be formed as a solid when we mix two aqueous solutions. An aqueous solution is a solution of a substance that have been dissolved in water.

Thus, when we have a mixture of two liquid reactants and then one of the products does separate itself out of the solution then we say that a precipitate has been formed.

In this case, we are to write down the equation of the reaction between aqueous lead (ii) chloride reacts with aqueous sodium sulfate to produce a lead(ii) sulfate. The solid would separate out of the system and we can see the white color of the lead(ii) sulfate.

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Taking into account the reaction stoichiometry, 380.12 grams of O₂ are produced as the result of the decomposition of 843 g of NaClO₃.

In first place, the balanced reaction iS:

2 NaClO₃ → 2 NaCl + 3 O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 212.9 grams of NaClO₃ form 96 grams of O₂, 843 grams of NaClO₃ form how much mass of O₂?

mass of O₂= (843 grams of NaClO₃× 96 grams of O₂) ÷212.9 grams of NaClO₃

mass of O₂= 380.12 grams

Finally, 380.12 grams of O₂ are formed.

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Answer:

Here are the chemical reactions for the formation of the respective Grignard reagents from the reaction of magnesium with the following organic halides:

Mg + CH3I → CH3MgI

Mg + C6H5Br → C6H5MgBr

Mg + C3H7Cl → C3H7MgCl

Grignard reagents are formed when magnesium metal is reacted with an alkyl halide. The magnesium metal reacts with the halide to form a magnesium halide salt, and the alkyl group is displaced from the halide to form the Grignard reagent.

The Grignard reagent is a powerful nucleophile and can be used to synthesize a variety of organic compounds.

Based on the concentration and volume of reactants:

The concentration of each of the ions in the solution at the end of the reaction is calculated as follows:

Equation of reaction : ZnCl₂ + 2 NaOH —> Zn(OH)₂ + 2 NaCl

moles of ZnCl₂ = 250/1000 * 0.65

moles of ZnCl₂ = 0.1625 moles

Moles of NaOH = 200/1000 * 0.750

moles of NaOH = 0.15 moles

NaOH is the limiting reactant

Moles of Zn(OH)₂ formed = 0.15 / 2

Moles of Zn(OH)₂ formed = 0.075 moles

final volume of solution = 450 ml

the concentration of Na⁺ ion in solution = 0.15/450

concentration of Na⁺ ion = 0.333 M

concentration of Cl⁻ in solution = 0.1625 * 2 / 450

concentration of Cl⁻ = 0.722 M

concentration of Zn²⁺ left = (0.1625 - 0.15)/450

concentration of Zn²⁺ = 0.028 M

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As we know that the equivalency point of moles of added base will be equal to the moles of original acid, this allows to determine the number of moles of original acid.

At the equivalency point the moles of added base will be equal to the moles of original acid, this allows the determination of the number of moles of original acid. This can be combined with the original volume of the analyte solution in order to determine its concentration.

So we can conclude that at the equivalence point the moles of added base will be equal to the moles of original acid, this allows the determination of the number of moles of original acid.

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To determine the pH of a solution based on the hydronium ion concentration, you can use the equation:

pH = -log[H₃O⁺]

where [H₃O⁺] is the concentration of hydronium ions.

In this case, the hydronium ion concentration is 6.5x10^-4 M.

Calculating the pH:

pH = -log(6.5x10^-4)

= -log(6.5) - log(10^-4)

= -log(6.5) + 4

Using a calculator or logarithmic tables, you can find that the logarithm of 6.5 is approximately 0.81.

pH ≈ 0.81 + 4

pH ≈ 4.81

Rounding to the nearest whole number, the pH of the solution is approximately 5.

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Answer:

1.5x1024

Explanation:

Reactions are balanced by equating the right and the left side by stoichiometry coefficients. The redox reactions are balanced and corrected by simplifying the numbers.

A redox reaction is a depiction of the oxidation and the reduction of the reaction that shows the loss and the gain of the electrons by the chemical species.

The oxidation half-reaction:

Mg  →  Mg²⁺ + 2e⁻

The reduction half-reaction:

2Au + 2 e⁻ → 2 Au

The overall balanced reaction is:

Mg(s) + 2Au⁺ (aq)  → Mg²⁺ (aq) + 2Au(s)

Therefore, the reaction is balanced by the oxidation and the reduction halves.

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Cu + O2 --->  CuO2 -The first reaction is a combustion reaction

2 HCl + Mg → H2 + MgCl2- The second reaction is a Single replacement reaction

A combustion reaction is a type of chemical reaction that occurs between a fuel and an oxidizer in the presence of heat or light, resulting in the release of energy in the form of heat and light.

In other words, it is a reaction in which a substance reacts with oxygen to produce heat and light.

Combustion reactions are important in many aspects of daily life, including the burning of fossil fuels for energy production, the combustion of wood or other materials for heating or cooking, and the combustion of fuels in internal combustion engines.

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The answer is 1ml. The answer is 1ml because of calibration of this graduated cylinder

Answer:

1 mL

Explanation:

According to your definition, it is the difference between marked spaces divided by the # of spaces between marked values.

Difference between 2 marked values: 5 mL

# Of Spaces between marked values: 5

Calibration: 5 mL / 5 mL = 1 mL

The mass of the asteroid is C. 1.2 x \(10^{12}\) Kg

To find the mass of the other asteroid, we can rearrange the equation for the gravitational force between two objects:

F = (G * m1 * m2) / \(r^{2}\)

where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two asteroids, and r is the distance between them.

Given that the distance between the asteroids is 75000 m, the force of gravity between them is 1.14 N, and one asteroid has a mass of 8 x \(10^{7}\) kg, we can substitute these values into the equation and solve for the mass of the other asteroid (m2):

1.14 N = (6.67430 × \(10^{-11}\) N \(m^{2}\)/\(Kg^{2}\) * 8 x \(10^{7}\) kg * \(m2\)) / \((75000 m)^{2}\)

Simplifying and solving the equation, we find that the mass of the other asteroid (m2) is approximately 1.2 x \(10^{12}\) kg. Therefore, Option C is correct.

The question was incomplete. find the full content below:

Two asteroids are 75000 m apart one has a mass of 8 x \(10^{7}\) kg if the force of gravity between them is 1.14 what is the mass of the asteroid

A. 3.4 x \(10^{11}\) kg

B. 8.3 x \(10^{12}\) kg

C. 1.2 x \(10^{12}\) kg

D. 1.2 x \(10^{10}\) kg

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Answer:

The charges are typically used to determine the mole ratio and composition of the individual atoms of elements in the compound

Explanation:

Take for instance the following compounds:

\(NaOH\) and \(H_{2} O\)

I hope this helps.

Answer:ch4

Explanation:

Answer:

Its H2

Explanation:

Helium has the lowest effusion rate. So its H2

Based on the kinetic theory of gases, scientists could infer from Robert Boyle’s Law that an inverse relationship exists between the pressure of gases and their volume if the temperature is kept constant because the decrease in the volume of the vessel containing the gases will result in less room for movement of the gases and hence, the frequency of collisions increases and subsequently the pressure of the gases will increase.

According to the kinetic theory of gases, a gas is made up of numerous submicroscopic particles (atoms or molecules), all of which are moving randomly and continuously. The container's walls and the quickly moving particles frequently collide in this situation resulting in the gas pressure.

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Answer:

Excuse me if i am worng but i think it is B

Explanation:

Answer:

option 4.

organism,organ sytem,organ,tissue,cell.

The balanced equation by hit and trial method is:

Zn + 2HCl → ZnCl2 + H2

Because a metal is replaced by another metal, the interaction between hydrochloric acid and zinc produces a single-displacement reaction.

This can be shown by,

B + CD → BD + C

There are two requirements: either B and D must be different metals (or any element that may form a cation, such as a hydrogen), while C must be an anion, or B and D must be halogens, while C must be a cation.

Count the Zn, Cl, and H atoms on each side of the chemical equation to balance the HCl-Zn reaction equation. To balance the equation, just alter the coefficients or the numbers that come before the atoms or compounds. The equation appears as follows after the coefficients have been changed:

ZnCl2 + H2 → Zn + 2HCl

Balance the molecular equation first.

Zn + 2HCl → ZnCl2 + H2

The net ionic equation will be, once the number of ions on both sides of the reaction is equalized by crossing them out.

Zn + 2H+ + 2 Cl– → Zn2+ + 2Cl– + H2

The balanced equation will be,

Zn + 2HCl → ZnCl2 + H2

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Answer:

A catalyst is a substance that speed up the chemical reaction or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction. Catalyst is a process of adding a catalyst to facilitate a reaction. A catalyst works by providing an alternative reaction pathway to the reaction of product.

Explanation:

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