Chapter 3: Q.3.26 (page 73)

Convert each of the following energy units:
a. $8.1kcal to cal$
b. $325 J to KJ$
c. $2550 cal to KJ$
d. $2.5 kcal to J$

Short Answer

Expert verified

a. $8100 cal$

b. $0.325 kJ$

c. $10.7 kJ$

d. $10460 J$

Step by step solution

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.

Explanation

a. converting $8.1 kcal$ to cal,

Using $1 kcal = 1000 cal$ , Hence $8.1 k c a l$ is

$= 8.1 \times 1000 = 8100 c a l$

b. converting $325 J tokJ$ ,

Using $1.00 kJ = 1000 J$ , Hence $325 J$ is

$= \frac{325}{1000} = 0.325 kJ$

c. converting $2550 cal to KJ$ ,

Using $1 kcal = 4.184 kJ$ and $1 kcal = 1000 cal$ Hence $2550 J$ is

$= \frac{2550}{1000} \times 4.184 = 10.7 J$

d. converting $2.5 kcal to J$ ,

Using $1 k cal = 4184 J$ , Hence $2.5 k c a l$ is,

$= 2.5 \times 4184 = 10460 J$

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Convert each of the following energy units:
a. $8.1kcal to cal$
b. $325 J to KJ$
c. $2550 cal to KJ$
d. $2.5 kcal to J$

Short Answer

Step by step solution

Given Information

Explanation

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Convert each of the following energy units:a.8.1kcal to calb. 325JtoKJc. 2550caltoKJd. 2.5kcaltoJ

Short Answer

Step by step solution

Given Information

Explanation

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Organic Chemistry

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Kinetics

Inorganic Chemistry

Chemical Analysis

Nuclear Chemistry

Study anywhere. Anytime. Across all devices.

Convert each of the following energy units:
a. $8.1kcal to cal$
b. $325 J to KJ$
c. $2550 cal to KJ$
d. $2.5 kcal to J$