28 Answered Questions for the topic Molar Mass

10/03/19

Molar Mass help
What is the molar mass ofAcetic Anhydride Acetylsalicylic AcidAcetic AcidPlease show work
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05/23/19

The empirical formula of a compound is determined to be C2H3, and its molecular mass is found to be 54.10 g/mol. Determine the molecular formula of the compound
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03/25/19

How many moles of KI are in 8.89×1024 formula units?
How many moles of KI are in 8.89×1024 are in  formula units?
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02/20/19

A gas sample is collected at 21 degrees celsius and 0.988 atm. If the sample has a mass of 4.7 g and a volume of 396 mL. What is the molar mass?
10th grade Chemistry gas law problem. Find the molar mass given the temperature and air pressure.
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06/19/18

calculate the molar mass ( molecular weight) of a sample if a single molecule weighs 7.45 * 10^-23 g
is this even possible to determine if you don’t know what elements are in the molecule? probably so but i’m stumped! S.O.S.
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05/22/18

An anti cavity mouthwash is 0.05% (w/v) sodium fluoride. What is the molarity of sodium fluoride in the mouthwash?
How many grams of sodium fluoride are there in 0.5 fluid ounces of the mouthwash?
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05/22/18

what is the molar mass of aluminum?
what is the  molar mass of aluminum?
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02/14/18

how to find molar mass of an unknown compound
A solution is prepared with 3.85 g of an unknown compound in 100.0 g of cyclohexane. The solution had a freezing point of 4.18 degrees Celsius. what is the molar mass of the unknown compound?
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01/30/18

Can someone help me with empirical formula and molar mass?
How do I find out the empirical formula of a molecule and how do I find the molecular formula?   Ex:    1. What's the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and... more
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12/04/17

Can someone help me with finding out the Molar Mass and Percentage Composition for compounds?
Here are two examples:   Mg₃P₂   &   Sr(OH)₂     I've been struggling with trying to find out the molar mass/percentage compositions for these questions but I just struggle to do so,... more
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11/14/17

determine the mass of the sample
1.48 mol carbon tetrafluoride 
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02/08/17

How many moles would 7.84 x 10^25 atoms of magnesium be? – Show Work
How many moles would 7.84 x 10^25 atoms of magnesium be? – Show Work
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02/08/17

What is the mass of 1.2 x 10^-3 moles of sodium chloride? – Show Work
What is the mass of 1.2 x 10^-3 moles of sodium chloride? – Show Work
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02/08/17

How many grams in 3.91 moles of sodium? – Show Work
How many grams in 3.91 moles of sodium? – Show Work
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02/08/17

How many grams in 45.22 moles of strontium? – Show Work
How many grams in 45.22 moles of strontium? – Show Work
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02/08/17

How many moles in 31.0 g of chlorine? (Remember chlorine is diatomic) – Show Work
How many moles in 31.0 g of chlorine? (Remember chlorine is diatomic) – Show Work
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02/08/17

How many moles in 34.2 g of sulfur? – Show Work
How many moles in 34.2 g of sulfur? – Show Work
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10/24/16

there is 6.10g of Cobalt (II) Nitrate, Co(NO3)2, what is the molar mass?
there is 6.10g of Cobalt (II) Nitrate, Co(NO3)2, what is the molar mass?  
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03/20/16

chem helo plss
starting with n=g/MM and PV=nRT, detrive the formula for molar mass
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01/27/16

CHEMISTRY PLEASE HELP?!!!Determine the molar mass of a compound - given freezing point and masses of components in a solution?
A company is studying the use of a compound as a potential antifreeze. When 0.243 g of the compound is dissolved in 25.0 g of water, the freezing point of the solution is -0.201 * Celsius.   a.... more
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01/13/16

A volume of 253 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0
A 0.548 gram sample of a metal, M, reacts completely with sulfuric acid according to:M(s)+H2SO4(aq) -> MSO4(aq)+H2(g)A volume of 253 mL of hydrogen is collected over water; the water level in... more
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09/27/15

Please help I'm so confused!
Find the molar mass of PCl3? 
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09/23/15

The molar mass of aspirin is 180.16 g/mol. What is the theoretical yield in grams, for the aspirin she theoretically obtained above using 4.02 g of SA?
The molar mass of aspirin is 180.16 g/mol. What is the theoretical yield in grams, for the aspirin she theoretically obtained above using 4.02 g of SA? What is the percent yield?
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09/23/15

The molar mass of salicylic acid (SA) is 138.12 g/mol. How many theoretical mols are there in the 4.02 g of the SA reactant the student started the reaction wit
The molar mass of salicylic acid (SA) is 138.12 g/mol. How many theoretical mols are there in the 4.02 g of the SA reactant the student started the reaction with?
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04/21/15

Gas Laws and stoichiometry
Assume that 18.4 g of Al react with HCl according to the equation Al(s) + HCl(aq) −→ AlCl3(aq) + H2(g) at STP. How many moles of Al react? Remember to balance the equation first. Answer in units of... more
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