The Law of Definite Proportions

The Law of Definite Proportions

A compound will always have the same proportions of elements by mass.

The Law of Definite Proportions

A 101.96 g sample of a solid is broken down into 53.96 g of Aluminum and an unknown amount of oxygen. If a chemist wants to make 1,937 grams of that solid without any leftovers, how much aluminum and oxygen should she react together?

A 101.96 g sample of a solid is broken down into 53.96 g of Aluminum and an unknown amount of oxygen. If a chemist wants to make 1,937 grams of that solid without any leftovers, how much aluminum and oxygen should she react together?
Problem Solving Steps
1. GIVEN: What information are you given in the problem?
2. WANTED: What is the problem asking for?
3. PLAN: How do you get from your given to your wanted?

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The Law of Definite Proportions

A chemist reacts 24.0 grams of carbon with 24.0 grams of oxygen to get 42.0 grams of a gas, along with some leftover carbon. In another experiment, she reacts 30.0 grams of carbon with 40.0 grams of oxygen to get 70.0 g of a gas are the two gases the same?

A chemist reacts 24.0 grams of carbon with 24.0 grams of oxygen to get 42.0 grams of a gas, along with some leftover carbon. In another experiment, she reacts 30.0 grams of carbon with 40.0 grams of oxygen to get 70.0 g of a gas are the two gases the same?
Problem Solving Steps
1. GIVEN
2. WANTED
3. PLAN

​Let's Do This!

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