8.50g of a certain compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 138.g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured carbon dioxide 18.98g and water 3.33g

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Ответ:

heyhowdy

29.02.2020

Chemistry

Adam

Step-by-step explanation:

You just have to divide feet/second

Adam: 15 feet per second

15/1=15

Noah runs 599 feet in 40 seconds

599/40=14.9

Jake runs 1 mile in 384 seconds

1 mile=5280 feet

5280/384=13.8

liz runs 667 feet in 1 minute

1 minute=60 seconds

667/60=11.1

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8.50g of a certain compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have a molecular molar mass of 138.g/mol, is burned completely in excess oxygen, and the mass of the products carefully measured carbon dioxide 18.98g and water 3.33g ​