need help with these 3 question I don't understand how to solved it. 1)If a marathon race is 28.2 miles. What us the distance in kilometers? (1mile=1.61 kilometers) 2) If Earth is 93,000,000 miles from the sun. What is the distance in kilometers? (1 kilometers=0.619 miles) 3) The energy value of protein is 4.0cal/g. Calculate the energy in 250g of protein and Express the value in joules (J) (1cal=4.184J

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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I need help with these 3 question I don't understand how to solved it. 1)If a marathon race is 28.2 miles. What us the distance in kilometers? (1mile=1.61 kilometers) 2) If Earth is 93,000,000 miles from the sun. What is the distance in kilometers? (1 kilometers=0.619 miles) 3) The energy value of protein is 4.0cal/g. Calculate the energy in 250g of protein and Express the value in joules (J) (1cal=4.184J)
Expert Solution
Basic

The some Basis conversion are ;

1mile=1.61 kilometres

1 kilometres=0.619 miles

1cal=4.184J

Energy value of protein = 4.0cal/g

By using all this we can solve the above problem .

 

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