Holstine373 Holstine373

05-05-2014
Chemistry

Answered

Unknown element X combines with oxygen to form the compound XO2. If 44.0 grams of element X combines with 8.00 grams of oxygen, what is the atomic mass of element X?

A16 amu
B44 amu
C88 amu
D176 amu
E352 amu

Verified Answer :

05-05-2014

Oxygen has a Mr of 16 and half of 16 is 8 which is how many grams used. If 44 grams of X is used it must have an amu of 88. (Times 2)

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