Calculate the number of moles in each of the following masses: 0.039 g of palladium 0.0073 kg of tantalum

The number of moles of palladium and tantalum are 0.00037 mole and 0.0000404 mole respectively

Explanation:

Number of mole = reacting mass/molar mass

n = R.m/m.m Equation 1

Where n = number of moles, R.m = reacting mass, m.m = molar mass.

For palladium,

R.m = 0.039 g and m.m = 106.42 g/mol

Substituting theses values into equation 1

n = 0.039/106.42

n = 0.00037 mole

For tantalum,

R.m = 0.0073 and m.m = 180.9 g/mol

Substituting these values into equation 1

n = 0.0073/180.9

n = 0.0000404 mole

Therefore the number of moles of palladium and tantalum are 0.00037 mole and 0.0000404 mole respectively

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