How many moles are there in 237 g of niobium? round to the nearest tenth. don't forget the units.

Given :

Mass of niobium (Nb) = 237 g

To determine:

The Number of moles of niobium in the given mass

Explanation:

In chemistry, moles (n) is a unit of measurement which is given by the ratio of the mass of the substance (m)  to its atomic or molar mass (M)

i.e.  n = 'm'  in grams/ 'M' in grams.mole⁻¹

The atomic mass of Nb = 94 g/mol

Thus,

n = 237 g/ 94 g.mol⁻¹ = 2.521 moles

Ans: Number of moles of Nb rounded off to the nearest tenth is 2.5 moles

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