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gram molecular weight of C6H8O7=(atomic weigth of carbon X 6)+(atomic weigth of hydrogen X 8+(atomic weigth of oxygen X 7)
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What is the difference between molecular weight in amu and molecular weight in grams?
The only difference is the name of the unit; the numerical values are the same. However, the value in amu is the mass of a single molecule, while the molecular weight in grams is the mass of Avogadro's number of molecules. The mass of Avogadro's number of molecules is called a Gram-mole. The molecular weight of , say, Hydrogen H2 is 2 amu. A gram mole of this would be 2 grams. The molecular weight in grams is the weight of this molecule in real grams and is an extremely small value.
A compound with the empirical formula SN was found in a subsequent experiment to have a molar mass of 184.32 gmol. What is the molecular formula of the compound?
The empirical formula of SN has a formula unit mass of the sum of the gram atomic masses of nitrogen and sulfur, i.e., about 46.0667. The gram molecular mass given in the problem divided by this formula unit mass is about 4. Therefore, the molecular formula is S4N4.
What is the molecular formula of the compound CH2 with molar mass 42.0?
The unit CH2 has a gram atomic mass of 12.011 + 2(1.00794) or about 14. 42.0/14 = 3; therefore the molecular formula is C3H3.
Specific gravity of oxygen is?
Start with the molecular weight of oxygen, twice the atomic weight because it's O2. So the molecular weight is 32. Now at school you learn that a gram-mole of any gas occupies 22.4 litres. A gram-mole of oxygen weighs 32 grams (1 gram times the molecular weight). Therefore 32 grams of oxygen occupies 22.4 litres (at normal temperature and pressure). 22.4 litres of water (specific gravity = 1) weighs 22400 grams. Therefore the specific gravity is 32/22400 = 0.00142857 . . That's it!
Why is the gas sulfur hexafluoride heavier then air?
The density of a gas is propotional to its molecular weight. Air is composed of primarily of nitrogen and oxygen, which have molecular weights of about 28 g/mol and 32 g/mol respectively. Sulfur hexafluoride has a molecular weight of about 146 g/mol, which would make it roughly 5 times denser than air.
What are the gram molecular weights of H2O?
18
How do you get gram molecular weight?
gram molecular weight = weight of one mole of the substance in grams for example 1 mole of water weighs 1 + 1 + 16 = 18 grams so gram molecularweight of water is 18g
Difference between Gram atom and gram molecule?
It's much simpler than you're probably thinking. You use the term gram atomic weight for atoms, and the term gram molecular weight for molecules. That's all. The gram molecular weight of a molecule is the sum of the gram atomic weights of the atoms making up that molecule.
What is a gram of a molecular substance?
A gram of a molecular substance is the quantity that will have a mass of 1 gram.
What is the gram molecular mass of hydrogen?
The gram molecular mass of H2 is 2g.
What is the mass of a single molecule of water?
- calculate the molecular mass of the substance from the atomic weights of the contained elements - 1 molecule gram of any substance contain 6,023 141 79.1023 molecules (Avogadro number) - mass of a single molecule is: Molecular mass in grams/Avogadro number
What has the author Robert U Bonnar written?
Robert U. Bonnar has written: 'Number-average molecular weights' -- subject(s): Measurement, Molecular weights
What is the standard for the molecular weights of molecules?
carbon-12
What has the author Paul Gershom Carpenter written?
Paul Gershom Carpenter has written: 'Diffusion velocity as a means of determining molecular weights' -- subject(s): Molecular weights
True or false Gases with high molecular weights diffuse more slowly than gases with lower molecular weights?
Smaller molecules diffuse readily.
What is something that weights a gram?
The metric system equates volumes of water to weights. One liter of water weights one kilogram (about 2.2 pounds), and one mL of water weighs one gram.
How many gram weights in a newton?
100 grams
