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3 years ago

Sigh.....................................

Chemistry

2 answers:

attashe74 [19]3 years ago

7 0

Answer:

That is a nice picture i love it plus if you need help just ask we can help :3

Explanation:

3241004551 [841]3 years ago

5 0

Answer:

what wrong

Explanation:

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Question 1 (1 point)

Colt1911 [192]

Answer:

Both are made up of two substances that are not chemically combined.
oxygen (O2)
carbon dioxide (CO2 )
air (N2 mixed with O2 and CO2)
Pure substances cannot be separated by physical means.

Explanation:

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3 years ago

The energy transformations are similar because they both involve transformations that

blondinia [14]

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On a weather map, which symbol on a line indicates a cold front? A. semicircle B. semicircles and triangles C. full circles D. t

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The symbol on a line that indicates a cold front on a map is a triangle. The point of the triangle will indicate the direction of movement of the cold front.

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Alexxandr [17]

The amount of water in the air is humidity .

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If an equal number of moles of reactants are used, do the following equilibrium mixtures contain primarily reactants or products

puteri [66]

Answer:

For a: The equilibrium mixture contains primarily reactants.

For b: The equilibrium mixture contains primarily products.

Explanation:

There are 3 conditions:

When $K_{eq}>1$ ; the reaction is product favored.
When $K_{eq}$ ; the reaction is reactant favored.
When $K_{e}=1$ ; the reaction is in equilibrium.

For the given chemical reactions:

For a:

The chemical equation follows:

$HCN(aq.)+H_2O(l)\rightleftharpoons CN^-(aq.)+H_3O^+(aq.);K_{eq}=6.2\times 10^{-10}$

The expression of $K_{eq}$ for above reaction follows:

$K_{eq}=\frac{[CN^-][H_3O^+]}{[HCN][H_2O]}=6.2\times 10^{-10}$

As, $K_{eq}$ , the reaction will be favored on the reactant side.

Hence, the equilibrium mixture contains primarily reactants.

For b:

The chemical equation follows:

$H_2(g)+Cl_2(g)\rightleftharpoons 2HCl(g);K_{eq}=2.51\times 10^{4}$

The expression of $K_{eq}$ for above reaction follows:

$K_{eq}=\frac{[HCl]^2}{[H_2][Cl_2]}=2.51\times 10^{4}$

As, $K_{eq}>1$ , the reaction will be favored on the product side.

Hence, the equilibrium mixture contains primarily products.

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3 years ago