Answer:
the mass percentage of o in cao is 28.531%
➤ For determining the % composition of each element in a compound :
Atomic weight of Ca = 40
Atomic weight of O = 16
Molar mass of CaO = 40+16 = 56
➙ %O = 16×100/56
➙ %O = 1600/56
➙ %O = 28.57%
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Answer:
the mass percentage of o in cao is 28.531%
Answer :
➤ For determining the % composition of each element in a compound :
Atomic weight of Ca = 40
Atomic weight of O = 16
Molar mass of CaO = 40+16 = 56
➙ %O = 16×100/56
➙ %O = 1600/56
➙ %O = 28.57%
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