The specific heat of silicon is 700J/kg/°C, how much energy is needed to raise a 14g of siliconby 30 °CA) 49 kJB) 49 kcalC) 294 kcalD) 249 kJIALHeat = mass X temperature change × specific heatHeat = mΔΤSHcal =°Ccalg °CJ = g°CJg °CHow many calories are required to raise the temperature of a 780. g sample of gold from 25 °Cto 175 °C? The specific heat of gold is 0.0308 cal/g °C.A) 2250JB) 3604 calC) 2250 calD) 693 cal

1) To find out the amount of heat required to raise the temperature of 14 g of silicon by 30°C, the specific heat of silicon is given to be 700 J/kg°C. The heat required to raise the temperature of 14 g of a sample of silicon by 30°C, can be calculated as follows: Q = mS∆T= 14 g × 1 kg1000 g × 700 J/kg°C × 30°C= 294 J(2) To find out the number of calories required to raise the temperature of 780. g of gold from 25°C to 175°C. The specific heat of gold is 0.0308 cal/g°C. The number of calories required can be calculated as follows: Q = m × S ×∆T= 780. g × 0.0308 cal/g°C × 175°C - 25°C= 3603.6 cal≈3604 cal

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The specific heat of silicon is 700J/kg/°C, how much energy is needed to raise a 14g of silicon by 30 °C A) 49 KJ B) 49 kcal C) 294 kcal D) 249 KJ TJAL At

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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