Câu hỏi
How much heat is needed to change the temperature of 3 grams of gold (c=0.129(1)/(g^circ )C) from 21^circ C to 363^circ C ? The answer is expressed to the nearest whole number. 121 joules 132 joules 140 joules 149 joules
Giải pháp
4.2
(251 Votes)
Essie Haynes
Expert · Tutor for 3 years
Answer
132 joules
Explanation
1. Write the heat formula The formula for heat is **
**. Where:
,
,
.2. Substitute values
.3. Calculate
.4. Round to nearest whole number
.