Calculate the mass of 0.1 mole of the following: CaCl2 (Ca = 40, Na=23, Mg =24, S=32, C = 12, Cl = 35.5, O=16, H=1)

Calculate the mass of 0.1 mole of the following:

CaCl₂

(Ca = 40, Na=23, Mg =24, S=32, C = 12, Cl = 35.5, O=16, H=1)

Numerical

0.1 mole of CaCl₂ has mass = 111 x 0.1 = 11.1g

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Calculate the percentage of water of crystallization in CuSO₄.5H₂O

(H = 1, O = 16, S = 32, Cu = 64)

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64 g of oxygen gas contains ................ moles of oxygen atoms.

Define mole. What are the two things that a mole represents.

Prove the Following :
One mole of any gas contains th e same number of molecules.

Define the term:

Avogadro’s number

Define the term:

Relative molecular mass

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Calcium carbonate