Calculate the mass of 0.1 mole of the following: Na2SO4.10H2O (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:

Na₂SO₄.10H₂O

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

Numerical

0.1 mole of Na₂SO₄.10H₂O has mass = 322 x 0.1 = 32.2 g

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The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:

[Given that H = 1, O = 16]

How many atoms are there in 0.25 mole of hydrogen ?

How many moles are represented by 100 g of glucose, C6H12O6 ? (C = 12 u, H = 1 u, O = 16 u)

How many moles of oxygen atoms are present in one mole of the following compounds ?

If 0.2 mol of the following substance is required how many grams of that substance should be taken?

Sodium chloride

Define the term Relative atomic mass.

Explain the term:

Gram mole

Correct the following statement :
Equal masses of all gases under identical conditions contain the same number of molecules.

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)

Correct the statement, if required.

The relative atomic mass of an element is the number of times one molecule of an element is heavier than `1/12` the mass of an atom of C¹².