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Dennis_Churaev [7]
3 years ago
6

determine the final temperature of a 10-0-g aluminum block originally at 25.0°C if you apply 435 joules of energy to it

Chemistry
1 answer:
mihalych1998 [28]3 years ago
5 0
<span>Energy = Mass * heat capacity * temperature change so, 
</span>The energy added is 435 J and the temperature has to increase since the energy is added. 

<span>435 J = 10.0 g * 0.89 J/gC * temperature change </span>

<span>Temperature change = 48.9 C </span>

<span>The initial temperature is 25.0 C, the final temperature is 25.0 C + 48.9 C = 73.9 C.</span>
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Silver metal can be prepared by reducing its nitrate, AgNO3 with copper according to the following equation:
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%yield = 88.5%

<h3>Further explanation</h3>

Given

Reaction

Cu(s) + 2 AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)

Required

The percent yield

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= mass : MW

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