SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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None of the above
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Detailed explanation-1: -To calculate the number of moles of any substance in the sample, we simply divide the given weight of the substance by its molar mass.
Detailed explanation-2: -Worked Example: moles = mass รท molar mass (n=m/M)
Detailed explanation-3: -If you want to know how many moles of a material you have, divide the mass of the material by its molar mass. The molar mass of a substance is the mass in grams of one mole of that substance. This mass is given by the atomic weight of the chemical unit that makes up that substance in atomic mass units (amu).
Detailed explanation-4: -To correctly estimate the number of moles, n, of a substance of a specific mass, m, (in grams), you need to follow the grams to moles formula: n = m / M, where: M is the molar mass of this material.