32 Answered Questions for the topic Molar Mass

#### Please help! I cannot figure out the steps of going from mass of Hydrogen to moles of carbon in ethanol.

A sample of ethanol (C2H6O) contains 3.024g of hydrogen. How many moles of carbon are in the sample ? Molar Mass of ethanol (C2H6O)=46.07g/mol

#### chemistry molar mass

When 6 protons and 6 neutrons fuse, one nucleus of carbon-12 (C-12 or 12C6+) is formed. When one nucleus of C-12 is formed, 1.64 × 10−24 g of mass is lost. a. Calculate the mass loss when one...
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Molar Mass Chemistry

10/03/19

#### Molar Mass help

What is the molar mass ofAcetic Anhydride Acetylsalicylic AcidAcetic AcidPlease show work

Molar Mass Chemistry

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

Molar Mass Chemistry

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?

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.

Molar Mass

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.

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?

Molar Mass

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?

#### 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...
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#### 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,...
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#### 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

#### 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

#### How many grams in 3.91 moles of sodium? – Show Work

How many grams in 3.91 moles of sodium? – Show Work

#### How many grams in 45.22 moles of strontium? – Show Work

How many grams in 45.22 moles of strontium? – Show Work

#### 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

#### How many moles in 34.2 g of sulfur? – Show Work

How many moles in 34.2 g of sulfur? – Show Work

Molar Mass Chemistry

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?

Molar Mass Chemistry Lab

03/20/16

#### chem helo plss

starting with n=g/MM and PV=nRT, detrive the formula for molar mass

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....
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#### 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...
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