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mr_godi [17]
3 years ago
5

The molar heat of fusion of gold is 12. 550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to releas

e 235. 0 kJ of energy? Use q equals n delta H. 18. 73 g 222. 5 g 2,949. 3 g 3,688. 3 g.
Chemistry
1 answer:
wlad13 [49]3 years ago
6 0

Answer:

plyojexity

Explanation:

222^ -67'h~=H87

KJ energy is 5761 g and uses folytics and eats up the waizamorts of golerigrofy

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A solution that is 0.16 M in HCHO2 and 0.13 M in NaCHO2. Express your answer using two decimal places.
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3 years ago
Hydrochloric acid reacts faster with powdered zinc than with an equal mass of zinc strips because the greater the surface area o
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Answer:

increases the frequency of particle collisions

Explanation:

One factor upon which the rate of reaction depends is the surface area of reactants.

According to the collision theory, reactions occur when reactant particles having the required (activation) energy collide with each other, this collision is inelastic. However, collision of particles having energies less than the activation energy results in elastic collisions and no chemical reaction.

The more the exposed surface area of reactants, the greater the number of particles that come into contact with each other and the more the chances of frequent effective collisions that lead to reaction.

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3 years ago
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3 years ago
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viva [34]

Answer

hope it helps

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7 0
4 years ago
On the basis of le chatelier's principle explain why ag2co3 dissolves when hno3 is added
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The reaction is an equilibrium represented by the equation 

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7 0
3 years ago
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