aleks MEASUREMENT AND MATTER Setting up the solution to a basic quantitative pro

Question

aleks MEASUREMENT AND MATTER Setting up the solution to a basic quantitative problem Tymor The specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of the substance by the mass of the sample and by the change in temperature. The heat capacity of a certain substance has been measured to be 3.70Suppose 305. g of the substance are heated until the temperature of the sample has changed by 40.1°C Write an equation that will let you calculate the heat Q that was needed for this temperature change. Your equation should contain only symbols. Be sure you define each symbol. Your equation: Definitions of your symbols: -3.20C 1-305. O-40.1 Explanation Check o 2010 McGrew Hill Education All Rights Reserved Terms of Use I P

Explanation / Answer

heat(Q) = m*s*DT

    m = mass of substance = 305 g

    s = specific heat of substance = 3.7 j/g.c

   DT = 40.1 c

Q = 305*3.7*40.1

   = 45.252 kjoule

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