A gas has ? Please help will appreciate it. Thanks

Chemistry

1 answer:

Kaylis [27]4 years ago

6 0

Answer is C. No definite shape or definite volume
A gas is a substance with no definite volume and no definite shape. Solids and liquids have volumes that do not change easily. A gas, on the other hand, has a vol- ume that changes to match the volume of its container. The molecules in a gas are very far apart compared with the molecules in a solid or a liquid.

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ivann1987 [24]

Answer:

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Explanation:

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3 years ago

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Identify the precipitate(s) of the reaction that occurs when a silver nitrate solution is mixed with a sodium chloride solution.

klio [65]

Hello!

The precipitate of the reaction that occurs when a silver nitrate solution is mixed with a sodium chloride solution is silver chloride (AgCl).

The chemical equation for this precipitation reaction is the following:

AgNO₃(aq) + NaCl(aq) → AgCl↓(s) + NaNO₃(aq)

Silver Chloride is a chemical compound that is poorly soluble in water because the chemical bond between Ag⁺ and Cl⁻ is very strong as the two ions are nearly the same size and have similar electronic densities. If the chemical bond is strong, it is more difficult for water molecules to break this bond to surround the individual ions, and thus solubility will decrease.

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3 years ago

Given the following balanced equation at 120°C: A(g) + B(g) ⇋ 2 C(g) + D(s)(a) At equilibrium a 4.0 liter container was found to

BlackZzzverrR [31]

Answer:

a) kc = 0,25

b) [A] = 0,41 M

c) [A] = 0,8 M

[B] =0,2 M

[C] = 0,2M

Explanation:

The equilibrium-constant expression is defined as the ratio of the concentration of products over concentration of reactants. Each concentration is raised to the power of their coefficient.

Also, pure solid and liquids are not included in the equilibrium-constant expression because they don't affect the concentration of chemicals in the equilibrium.

If global reaction is:

A(g) + B(g) ⇋ 2 C(g) + D(s)

The kc = $\frac{[C]^2}{[A][B]}$