Energy Unit Conversion Challenge

This video tutorial covers various energy conversions, including calories to kilocalories, calories to joules, kilocalories to joules, and joules to calories. It emphasizes the importance of using correct conversion factors and maintaining significant figures throughout the calculations.

What is the relationship between calories and kilocalories?

• 1 kilocalorie = 10 calories

• 1 kilocalorie = 1000 calories

• 1 kilocalorie = 500 calories

• 1 kilocalorie = 100 calories

How many kilocalories are in 850 calories?

• 0.85 kilocalories

• 8.50 kilocalories

• 85 kilocalories

• 850 kilocalories

Why is it important to include the last zero in the answer 0.850 kilocalories?

• To maintain the correct number of significant digits

• To follow the calculator's format

• To make the number look bigger

• To make the calculation easier

What is the conversion factor from calories to joules?

• 1 calorie = 4.18 joules

• 1 calorie = 5.18 joules

• 1 calorie = 2.18 joules

• 1 calorie = 3.18 joules

How many joules are in 444 calories?

• 1860 joules

• 2000 joules

• 1000 joules

• 1500 joules

What is the first step in converting kilojoules to joules?

• Multiply by 1000

• Divide by 100

• Divide by 1000

• Multiply by 100

How many joules are in 1.8 kilojoules?

• 18000 joules

• 18 joules

• 1800 joules

• 180 joules

What is the conversion factor from kilojoules to joules?

• 1 kilojoule = 1000 joules

• 1 kilojoule = 500 joules

• 1 kilojoule = 10 joules

• 1 kilojoule = 100 joules

What is the first step in converting kilojoules to calories?

• Convert kilocalories to calories

• Convert calories to joules

• Convert joules to kilocalories

• Convert kilojoules to joules

How many calories are in 4.5 x 10^-1 kilojoules?

• 120 calories

• 90 calories

• 110 calories

• 100 calories