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Definite Proportions

Last updated over 5 years ago

7 questions

1

Question 1

1.

Water is always 11.19% hydrogen and 88.81% oxygen by mass. Calculate the mass of hydrogen and the mass of oxygen in 1000 grams of water.

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Question 2

2.

Water is always 11.19% hydrogen and 88.81% oxygen by mass. Calculate the mass of hydrogen and the mass of oxygen in 723.65 grams of water.

Question 3

3.

Water is always 11.19% hydrogen and 88.81% oxygen by mass. Calculate the mass of hydrogen and the mass of oxygen in 32 lbs of water.

Question 4

4.

Water is always 11.19% hydrogen and 88.81% oxygen by mass. Why can't we calculate the mass of hydrogen and the mass of oxygen in 24,000 gallons of water? What other information would we need?

Question 5

5.

Copper oxide is always 79.85% copper and 20.15% oxygen by mass. Calculate the mass of copper and the mass of oxygen in 1000 grams of copper oxide.

Question 6

6.

How many grams of water would be produced if we reacted 1000g of copper oxide with hydrogen?

Question 7

7.

How many grams of hydrogen would we need?