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18 December, 00:17

Every substance has a specific value of heat required in order to change the temperature of 1 gram of the substance by 1 degree Celsius. Specific heat is calculated by using the equation Q=mcΔt, where Q represents heat in joules, m represents mass in grams, Δt is the change in temperature in Celsius, and c is the coefficient constant for a substance. What are the units for thecoefficient c.

A. c=J·g·°C

B. c=J·g/°C.

C. c=J/g·°C

D. c=g·°C/J

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  1. 18 December, 00:44
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    We know that Q is in joules, m is in grams, and Δt is in °C. Thus:

    J = g * °C * c

    c = J / (g * °C)

    The answer is C
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