Conversions Between Calories and Kilojoules

This video tutorial explains how to solve an ALEKS problem involving the conversion of energy units between calories, kilocalories, and kilojoules. It covers the necessary conversion factors, such as 1 calorie equals 4.184 joules and 1 kilocalorie equals 1000 calories. The tutorial demonstrates step-by-step conversions between these units and provides tips for faster calculations. It also clarifies the difference between lowercase and uppercase 'C' in calories.

What is the conversion factor from calories to joules?

• 1 calorie = 4.184 joules

• 1 calorie = 3.184 joules

• 1 calorie = 5.184 joules

• 1 calorie = 2.184 joules

How many calories are in one kilocalorie?

• 10 calories

• 500 calories

• 1000 calories

• 100 calories

If you have 1.25 x 10^5 calories, how many kilocalories is that?

• 1.25 x 10^1 kcal

• 1.25 x 10^2 kcal

• 1.25 x 10^3 kcal

• 1.25 x 10^4 kcal

What is the first step in converting calories to kilojoules?

• Convert calories to joules

• Convert calories to kilocalories

• Convert joules to kilojoules

• Convert kilocalories to kilojoules

How many joules are in 1.25 x 10^5 calories?

• 5.23 x 10^3 joules

• 5.23 x 10^6 joules

• 5.23 x 10^5 joules

• 5.23 x 10^4 joules

What is the faster conversion factor from kilocalories to kilojoules?

• 1 kcal = 4.184 kJ

• 1 kcal = 3.184 kJ

• 1 kcal = 2.184 kJ

• 1 kcal = 5.184 kJ

How many kilojoules are in 115 kilocalories using the faster method?

• 481 kJ

• 381 kJ

• 681 kJ

• 581 kJ

What is the first step in converting kilojoules to kilocalories?

• Add 4.184

• Multiply by 4.184

• Subtract 4.184

• Divide by 4.184

How many kilocalories are in 1.69 x 10^3 kilojoules?

• 404 kcal

• 504 kcal

• 604 kcal

• 304 kcal

What is the final step in converting kilocalories to calories?

• Subtract 1000

• Multiply by 1000

• Divide by 1000

• Add 1000