Calculate the number of moles of 68g of He.(atomic mass of He = 4u)
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Mole of mass of helium= 4u
The given mass of helium = 67g
Thus the number of moles of helium = givenmass/ molar mass .
= 68 /4
= 17
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Given - Mass of Helium = 68 grams
Find - Number of moles
Solution - The number of moles can be calculated by knowing the mass and molar mass of an element. The formula expressing the mentioned relation is:
Number of moles = mass/molar mass
Number of moles of Helium = 68/4
Number of moles of Helium = 17
Hence, the number of moles of Helium weighing 68 grams is 17.
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