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11-09-2017
Chemistry

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How many moles of calcium are in a 351 kg sample?

Respuesta :

18-09-2017

351 kg = 351 x 1000 = 351000 grams

number of moles can be calculated using the following rule:
number of moles = mass / molar mass

From the periodic table:
molar mass of calcium = 40.078 grams

Therefore, substituting in the above equation:
number of moles = 351000 / 40.078 = 8757.922 moles

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