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Chapter 3: Q.3.26 (page 73)

Convert each of the following energy units:

a.8.1kcal to cal

b. 325JtoKJ

c. 2550caltoKJ

d. 2.5kcaltoJ

Short Answer

Expert verified

a.8100cal

b.0.325kJ

c.10.7kJ

d.10460J

Step by step solution

01

Given Information

The huge calorie, food calorie, or kilogram calorie was initially characterized as the need might have arisen to raise the temperature of one kilogram of water by one degree Celsius.

02

Explanation

a. converting8.1kcalto cal,

Using 1kcal=1000cal, Hence 8.1kcalis

=8.1脳1000=8100cal

b. converting 325JtokJ,

Using 1.00kJ=1000J, Hence 325Jis

=3251000=0.325kJ

c. converting 2550caltoKJ,

Using 1kcal=4.184kJand 1kcal=1000calHence 2550Jis

=25501000脳4.184=10.7J

d. converting 2.5kcaltoJ,

Using 1kcal=4184J, Hence 2.5kcalis,

=2.5脳4184=10460J

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