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As per the modified Periodic Table, the fourth element after oxygen considering their atomic weights is Ca and thus if the atomic weight of oxygen is considered to be as 16, therefore the atomic weight of Ca is 20

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Q: If the atomic weight of oxygen is sixteen what would be the atomic weight of calcium?

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40

No; That is the atomic weight of Calcium.

element 20 is calcium and its atomic weight is 40.078

Calcium's atomice weight is 40.078 amu (atomic mass units).

atomic weight of oxygen is 15.9997 atomic number of oxygen is 8 hope i helped:)

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The atomic weight of calcium is 40 u.

Calcium has an atomic weight of 40. Other info about Calcium: Symbol: Ca Name: Calcium Atomic Number: 20 Atomic Weight: 40.08 Number of Neutrons: 20 (atomic weight - atomic number) Number of Protons: 20

The question lacks sufficent information regarding quantity, and atomic weight is not expressed in grams. Are you asking how many grams per mole?

40.08

40

40.078

Calcium (Ca) has an atomic weight of 40.078g/mol

The atomic weight of oxygen is 15.9994

No; That is the atomic weight of Calcium.

The chemical formula for Calcium Oxide is CaO. The Atomic weigth of Calcium is 40.078. The Atomic weight of Oxygen is 15.999 The Molecular weight of CaO is therefore 56.077 Thus 100g of CaO would contain (15.999/56.077)*100 = 28.53041353852738 grams of Oxygen and (40.078/56.077)*100 = 71.46958646147262 grams of Calcium.

element 20 is calcium and its atomic weight is 40.078

The atomic weight of oxygen is 15,999.

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