number of moles in 0.0073kg of tantalum
To find the number of moles in 0.0073 kg of tantalum, we first need to determine the molar mass of tantalum.
The atomic mass of tantalum is 180.94 g/mol, which means that one mole of tantalum weighs 180.94 grams. To convert this to kilograms, we divide by 1000:
180.94 g/mol / 1000 g/kg = 0.18094 kg/mol
This means that one mole of tantalum weighs 0.18094 kg.
To find the number of moles in 0.0073 kg of tantalum, we divide the mass by the molar mass:
0.0073 kg / 0.18094 kg/mol = 0.0403 mol
Therefore, 0.0073 kg of tantalum is equivalent to 0.0403 moles.
To find the number of moles in a given mass of a substance, you need to use the molar mass of that substance.
The molar mass of tantalum (Ta) is approximately 180.95 g/mol.
First, convert the mass of tantalum from kilograms (kg) to grams (g):
0.0073 kg × 1000 g/kg = 7.3 g
Next, use the molar mass of tantalum to calculate the number of moles:
Number of moles = Mass / Molar mass
Number of moles = 7.3 g / 180.95 g/mol
Number of moles ≈ 0.0402 moles
Therefore, there are approximately 0.0402 moles in 0.0073 kg of tantalum.