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Chemistry unit 9 credit recovery moles and molar mass

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Chemistry Unit 9 Credit Recovery Moles and Molar Mass
1. Find the mass for 1 mole of the following: a) Magnesium24.31g b) vanadium 50.9
2. Determine the molar mass of the following: a) NH3 17.031 b) BeI2 262.821
c) KOH 56.1056 d) Ba(CO3)2 197.3359
3. Convert the following into moles: a) 7.5 g of silicon .26 b) 40g of zinc .61
4. What is scientific notation amount for 1 mole? 6.022 times 10^23 2 moles 6.022 times 10^46
5. Convert the following into grams: a) 2 moles of NaCl 116.9
b) 9 moles of AlBr3 2400.2
c) 0.5 moles of water 50.4
d) 3.0 x 1023 atoms of calcium 40
6. A compound is 49.5% iron and 50.5% fluorine by mass. What is the formula and chemical
name? F3Fe Ferric Fluoride
7. Determine the percent composition of both elements in potassium sulfide.
S= 29.08% K=70.91
8. Determine the formula for a substance which is 40.7% C, 5.1%H & 54.2%O
C2H3O2

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Name Per. 2 Chemistry Unit 9 Credit Recovery Moles and Molar Mass 1. Find the mass for 1 mole of the following: a) Magnesium24.31g b) vanadium 50.9 2. Determine the molar mass of the following: a) NH3 17.031 b) BeI2 262.821 c) KOH 56.1056 d) Ba(CO3)2 197.3359 3. Convert the following into moles ...
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