# “Molecular Weight and the Mole” is the main subject of this unit conversion worksheet

Subjects:

Math, Science

9, 10, 11, 12

Title – Unit Conversion Worksheet
By – John Brigham
Primary Subject – Science
Secondary Subjects – Math
Grade Level – 9 – 12

Name____________________________
Date___________________

### Unit Conversion Worksheet

1. A baker has 350 lbs. of dough. He knows that each loaf of bread requires 3.5 lbs.. How many loaves of bread will he get?
2. A bricklayer has 125 lbs. of mortar. He knows that there are 2000 lbs. in a ton. How many tons does he have?
3. A chemist has 62 grams of potassium. The chemist knows that the molecular weight of potassium is 31 grams per mole. How many moles of potassium does this represent?
4. A chemist has 1 gram of hydrogen molecules. The molecular weight of hydrogen is 2 grams per mole. How many moles of hydrogen does the chemist have?
5. A chemist has 1 gram of oxygen. The atomic weigh of oxygen is 16 grams per mole. How many moles of oxygen is this?
6. A farmer harvests 2548 eggs from his chickens during the week. He knows that a dozen eggs consists of 12 eggs. How many dozen eggs does he have?
7. A chemist has 7 x 10 24 molecules of CH 4 . He knows that there are 6 x 10 23 molecules in a mole. How many moles does he have?

8. A chemist has 3 x 10 22 molecules of oxygen. He knows that there are 6 x 10 23 molecules in a mole. How many moles of oxygen does he have?

9. A student combines 1 gram of H 2 and one gram of O. How many moles of H 2 O is formed? How many moles of hydrogen is left over?

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