Answer:
The number of moles of palladium and tantalum are 0.00037 mole and 0.0000404 mole respectively
Step-by-step 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