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Molecular Mass

Molecular mass measures the mass of a molecule. It is measured by adding together the atomic masses of atoms the molecule is made of.

1,424 Questions
Molecular Mass

What is the mass in grams molecular mass of H2SO4?

The mass in grams of one mole H2SO4 is: 98.079 g/mol (molar mass)

The mass in grams of one molecule H2SO4 is (molecule mass):

98.079 (g/mol) / 6.02214*10+23(molecules/mol) = 16.286*10-23 g/molecule

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Molecular Mass

What is the molecular mass of cytosine?

The molecular mass of cytosine is 111,10.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

Calculate the number of moles in 2400g of Co2?

ca

567
Chemistry
Atoms and Atomic Structure
Molecular Mass

Moles that do not form properly and may progress to form melanomas are called?

dysplastic nevi

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Vitamins and Supplements
Elements and Compounds
Metal and Alloys
Molecular Mass

How much elemental potassium is in 600 mg of potassium chloride?

Answer: I don't know exactly, but I'll give you a clue. It's probably at least 100 mg and up to 600 mg of elemental potassium, because you can buy 100 mg elemental potassium tablets and up to 166 mg potassium tablets (probably elemental potassium) right off the shelf in stores in Canada without a prescription or doctor's approval.

Answer: According to my calculations, using a formula provided to me from a pharmacist or assistant, there's 373 mg. of elemental potassium in 600 mg. of potassium chloride.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

How many moles of lithium fluoride are in an 85.2 gram sample?

85.2 gram LiF sample is equivalent to 3,28 moles.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

What happens to the volume of a gas when the number of moles is doubled (all else held constant)?

At a constant volume the pressure increase.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

How many moles of urea 60.0 g mol must be dissolved in 100.0g of water to give a 2.5 molal solution?

The answer is 15,015 g.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

What is the molarity of a solution that is made using 1.2 moles of a substance in 500mL?

Molarity (M) is defined as moles of solute/liters of solution. Assuming the final volume is 500 ml (0.5 liters), then M = 1.2 moles/0.5 liters = 2.4 M

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Molecular Mass

What is the gram molecular mass of water?

A molecule of water has one oxygen atom and two hydrogen atoms. Their atomic masses are 16 and 1 respectively. Therefore the GMM of water is 16+2x1=18g.

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Molecular Mass

What is the relative molecular mass of vitamin B2?

u c... d formula 4 vitamin B2 is C(17)H(20)N(4)O(6)... so.. after calculating using d periodic table... d answer will b:198!!! answer is not really guaranteed.. but if ur desperate, then juz take it!! CHEMISTRY is jus so GREAT, don't u think so? im juz a 17 years old gal with ambition 2 b a genius................

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Molecular Mass

What is the difference between molecular mass and formula mass?

Both formula mass and molecular mass refer to the mass of a compound relative to 1/12 of the mass of a Carbon-12 atom. However, molecular mass is specific to molecules – that is, only for a minimum of 2 atoms held together by covalent bonds. As an example, you can say that the molecular mass of water is 18. You can also say that the formula mass of water is 18. You can say that the formula mass of common table salt, NaCl, is 58.5, but it would be inaccurate to say that the molecular mass of NaCl is 58.5, since NaCl is not a molecule. The difference is not in numerical value but merely terminology.

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Chemistry
Percentages, Fractions, and Decimal Values
Molecular Mass

What is the percentage by mass of nitrate in sodium nitrate?

Sodium nitrate is NaNO3. The percent nitrate is given by :

PCT Nitrate = [ ( 14 + 48 ) / ( 23 + 14 + 48 ) ][ 100 ] = [ 62 /85 ][ 100 ] = 72.94 mass percent <----

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Chemistry
Atoms and Atomic Structure
Molecular Mass

How many moles of water can be produced by burning 325g of octane in excess oxygen?

Balanced equation: 2C8H18 + 25O2 ==> 16CO2 + 18H2O
moles of octane used: 325 g x 1 mole/114g = 2.85 moles octane
moles H2O produced: 18 moles H2O/2 moles C8H18 x 2.85 moles C8H18 = 25.65 moles H2O

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Science
Chemistry
Molecular Mass

How many atoms are there in 2 moles of chlorine?

The number of atoms is 12,044 281 714.10e23 atoms.

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Chemistry
Molecular Mass

How many moles of H2O are produced when 0.468 mol of octane is burned?

It forms H2O when burned.There are 3.744 moles of H2O after burned.

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Chemistry
Elements and Compounds
Molecular Mass

What is the molecular formula of a protein?

Each protein has specific formula, a chain of peptides formed from aminoacids.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

How many moles of sodium oxide will be produced when 10 mloles of sodium react with oxygen?

4Na+O2==2Na2o is the reaction. 5 moles of Na2O will form by reacting.

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Chemistry
Molecular Mass

How many moles are contained in 0.455L of a 7.182 M solution?

This is a chemical calculation. there are 3.267 moles in this solution.

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Chemistry
Molecular Mass

How many moles of Sc are in 52.3 g of element?

Sc is a s block element. There are 1.16 molesin 52.3 grams.

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Chemistry
Molecular Mass

How many moles are in 53.8 g of magnesium chloride?

The answer is o,565 mol for anhydrous magnesium chloride.

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Chemistry
Molecular Mass

How many grams of oxygen will in 2 moles of potassium dichromate?

Structure for this is K2Cr2O7. there are 14 moles of O in 2 moles.

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Chemistry
Atoms and Atomic Structure
Molecular Mass

How many grams are in 0.75 moles of water?

Molar mass of water is 18gmol-1. so there are 13.5 grams.

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