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Get Full Access to Introductory Chemistry - 5 Edition - Chapter 3 - Problem 52p
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 3 - Problem 52p

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Perform each conversion.(a) 45.6 J to calories(b) 355 cal to joules(c) 43.8 kJ to

ISBN: 9780321910295 34

Solution for problem 52P Chapter 3

Introductory Chemistry | 5th Edition

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Problem 52P

Problem 52P

Perform each conversion.

(a) 45.6 J to calories

(b) 355 cal to joules

(c) 43.8 kJ to calories

(d) 215 cal to kilojoules

Step-by-Step Solution:
Step 1 of 3

Solution 52P

Here, we are going to convert the unit from Cal to joule or Joule to cal.

(a) 45.6 J to calories

We know,

1 Cal = 4.1868 Joule

Therefore, the conversion factor =

Thus,

45.6 J x  =  10.89 cal

Therefore, 45.6 J = 10.89 cal

(b) 355 cal to joules

We know,

1 Cal = 4.1868 Joule

Therefore, the conversion factor =

Thus,

355 cal x  = 1486.31 Joule

And, 1000 kJ = 1 J

Therefore,

355 cal = 1486.31 Joule = 1.486 kJ

(c) 43.8 kJ to calories

We know,

1 Cal = 4.1868 Joule

1000 J = 1 kJ

Therefore, the conversion factor = ,

Thus,

43.8 kJ x  x  = 10461.45 cal

Therefor

And, 1000 calories  = 1 kilocalories

134 kJ = 10461.45 cal = 10.461 kilocalories

(d) 215 cal to kilojoules

We know,

1 Cal = 4.1868 Joule

1000 J = 1 kJ

Therefore, the conversion factor =  ,

Thus,

215 cal x   x  = 0.90  kilojoules

Step 2 of 3

Step 3 of 3

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