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arlik [135]
3 years ago
10

When a pure substance melts, its particles get larger. True Or False!

Chemistry
1 answer:
boyakko [2]3 years ago
7 0

Answer:

False

Explanation:

They remain the same, only the amount of energy in each particle changes.

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Which statement about the fossil record is correct?
lubasha [3.4K]
The answers is the last answer choice!!
5 0
3 years ago
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Consider the following chemical equilibrium: 4NH3+3O2=2N2+6H2O Now write an equation below that shows how to calculate from for
erma4kov [3.2K]

This is an incomplete question, here is a complete question.

Consider the following chemical equilibrium:

4NH_3(g)+3O_2(g)\rightleftharpoons 2N_2(g)+6H_2O(g)

Now write an equation below that shows how to calculate Kp from Kc for this reaction at an absolute temperature T. You can assume T is comfortably above room temperature. If you include any common physical constants in your equation be sure you use their standard symbols, found in the ALEKS Calculator.

Answer :

The expression of K_c will be,

K_c=\frac{[N_2]^2[H_2O]^6}{[NH_3]^4[O_2]^3}

The expression of K_p will be,

K_p=K_c(RT)

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

4NH_3(g)+3O_2(g)\rightleftharpoons 2N_2(g)+6H_2O(g)

The expression of K_c will be,

K_c=\frac{[N_2]^2[H_2O]^6}{[NH_3]^4[O_2]^3}

The relation between K_p and K_c is:

K_p=K_c(RT)^{\Delta n}

Form the above reaction we conclude that:

\Delta n=n_{product}-n_{reactant}

\Delta n=(6+2)-(4+3)

\Delta n=1

The expression of K_p will be,

K_p=K_c(RT)^{1}

K_p=K_c(RT)

7 0
3 years ago
What is keq for the reaction N2 + 3h2
scoray [572]

A<em>ns</em><em>w</em><em>e</em><em>r</em>

<h2><em>K </em><em>eq</em><em>=</em><em>1</em><em>.</em><em>3</em><em>3</em></h2>

<em>please </em><em>see</em><em> the</em><em> attached</em><em> </em><em>picture.</em><em>.</em><em>.</em><em>.</em>

<em>Hope </em><em>it</em><em> helps</em><em>.</em><em>.</em>

<em>good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em>

7 0
3 years ago
Write the half reactions for 2Li + H2 -&gt; 2LiH.
Ksivusya [100]
<span>Li ----> Li+ + e-(oxidation)
now comes </span>
<span>Reduction: </span>

<span>H2 + 2e- ------> 2H
 now by
</span>Multiplying (1) by 2 and adding in (2)  will give you the required equation..
.. 

<span>2Li + H2 ---------> 2LiH
</span>half reaction are either oxidation or reduction
7 0
3 years ago
What is the name of Cr3P
almond37 [142]

Answer:

Chromium (I) phosphide.

Explanation:

Hope this help:D

8 0
3 years ago
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