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Solutions to the Molar Mass Practice Worksheet: Important note to students: All of the units given here are “grams per mole”, which may be abbreviated as “g/mol”, “grams/mol”, or “g . mol -1 ”, depending on
The Mole Review 1) Define “mole”. 2) How many moles are present in 34 grams of Cu(OH) 2? 3) How many moles are present in 2.45 x 1023 molecules of CH 4? 4) How many grams are there in 3.4 x 1024 molecules of NH 3? 5) How much does 4.2 moles of Ca(NO 3) 2 weigh? 6) What is the molar mass of MgO?
Exercise 1. How much does one mole weigh (molar mass/molecular weight) for the following? Show work: which numbers are added/multiplied, how many decimal places are used from the periodic table, and your result.
Download and print the black and white Molar Mass Worksheet pdf. There’s an answer key too in the other pdf file. There are examples and explanations below. Example 1: What is the molar mass of sodium? The molar mass of sodium is found on the periodic table. For element Na (sodium), find the number with the decimal point. It’s 22.99 not 11.
“Molar mass” is used to describe the mass of one mole of a chemical compound, while “atomic mass” is used to describe the mass of one mole of an element or the mass of one atom of an element. 8) Which is a better unit for expressing molar mass, “amu” or “grams/mole”?
Molar Mass Worksheet – Answer Key Calculate the molar mass of the following chemicals: 1) Cl2 71 g/mol 2) KOH 56.1 g/mol 3) BeCl2 80 g/mol 4) FeCl3 162.3 g/mol 5) BF3 67.8 g/mol 6) CCl2F2 121 g/mol 7) Mg(OH)2 58.3 g/mol 8) UF6 352 g/mol 9) SO2 64.1 g/mol 10) H3PO4 98 g/mol 11) (NH4)2SO4 132.1 g/mol 12) CH3COOH 60 g/mol 13) Pb(NO3)2 331.2 g ...
1 mole = molar mass (could be atomic mass from periodic table or molecular mass) 1 mole = 22.4 L of a gas at STP ( You do not need to worry about this yet ) Each definition can be written as a set of two conversion factors.
