Answered

A sample of mercury is heated from 25.5 °C to 52.5 °C. In the process, 3050J of heat

are absorbed. What mass of mercury was in the sample? The specific heat of mercury is 140 J/g °C.

Verified Answer :

oyeyemid

3050÷140
=21.79g
Therefore the was a mass of 21.79 grams in the sample

Answer:

0.807g

Explanation:

They tell us that we heat the sample and during this process its state of aggregation does not change so we are facing a sensible heat

sensible heat formula

\(Q=m.C_e.\Delta t\\Q=m.C_e.(T_f-T_o)\)

Data

\(Q=3050J\\C_e= 140J/g\ºC\\T_o= 25.5\ºC\\T_f=52.5\ºC\)

We clear the mass of the sensible heat formula

\(Q=m.C_e.\Delta t\\\frac{Q}{C_e.\Delta t}=m\\\)

\(\frac{3050J}{140J/g\ºC.(52.5-25.5)\ºC}=m\\0.807 g= m\)

The mass of the mercury sample is 0.807g

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