Question

9. 5 g of calcium combine with 2 g of oxygen to form a compound. Find the molecular formula of the
compound. (Atomic mass of Ca 40 u; 0 - 16u)​

Answer 1

Answer:

answer = Ca2O

Step-by-step explanation:

moles of CA = 9.5/40

= 0.2375 moles

moles of O = 2/16

0.125

now, the ratio is, = 0.2375/0.125

= 1.9:1

so, molecular formula = Ca2O.

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