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The molecular weight of a hydrogen gas molecule H2 would be about?
Wiki User
∙ 13y ago
One mole H2 is 2*1.008 g/mol = 2.016 gram
Wiki User
∙ 12y ago
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What the structure of a molecule have a molecular weight of 22?
A molecule weighing 22 units can be constructed with one atom of carbon and four atoms of hydrogen. This is a methane molecule that normally would weigh 16 units. However, if two hydrogens are deuterium (2 units each) and two atoms of hydrogen are tritium (3 units each), the molecular weight comes out to 22 units.
How many hydrogen atoms would be needed in an addition reaction to convert one molecule of 2-pentene to one molecule pentane?
The molecular formula of 2-pentene is C5H10 and the molecular formula of pentane is C5H12. Therefore, (12 - 10) or 2 hydrogen atoms per molecule will be needed to convert pentene to pentane.
Is molecular weight the same as mass?
Technically... not really. It would perhaps be more accurate to use the terms formula mass and molecular mass rather than formula weight and molecular weight. This because in physical terms, weight is a force while mass is a measure of the amount of substance in something.
What shape would a molecule of hydrogen sulfide have?
A hydrogen sulfide molecule, H2S, has a bent shape, similar to that of a water molecule.
Can there be more than the 3 main atoms in water?
Water's molecular composition is H20 which is 2 hydrogen atoms and 1 oxygen atom. The molecular composition cannot change for if it did it would be a different substance.
What the structure of a molecule have a molecular weight of 22?
A molecule weighing 22 units can be constructed with one atom of carbon and four atoms of hydrogen. This is a methane molecule that normally would weigh 16 units. However, if two hydrogens are deuterium (2 units each) and two atoms of hydrogen are tritium (3 units each), the molecular weight comes out to 22 units.
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.
How many atoms of hydrogen are in one molecule?
I am assuming you are wondering how many atoms of hydrogen are in molecular hydrogen (H2), then the answer would be two since molecular hydrogen is always found as a diatomic species in nature. Similar to oxygen (O2) which is also naturally diatomic.
How many hydrogen atoms would be needed in an addition reaction to convert one molecule of 2-pentene to one molecule pentane?
The molecular formula of 2-pentene is C5H10 and the molecular formula of pentane is C5H12. Therefore, (12 - 10) or 2 hydrogen atoms per molecule will be needed to convert pentene to pentane.
What percent of hydrogen in hydrogen peroxide?
The formula is H2O2 so in pure hydrogen peroxide it would be 50 mole %. As the molecular weight is 34 it would be 2/34 x 100 = 5.9 weight % (1 decimal place).
How would we determine the molecular weight for a molecule water h2o?
You add together the atomic weights of all the atoms (as given by its chemical formula) in the molecule
Is molecular weight the same as mass?
Technically... not really. It would perhaps be more accurate to use the terms formula mass and molecular mass rather than formula weight and molecular weight. This because in physical terms, weight is a force while mass is a measure of the amount of substance in something.
Is there a molecule with a mass of 1.78 gM?
No. The lightest element is hydrogen at 1.008 g/mole. Molecular hydrogen, H2, would therefore be 2.016 g/mole. There can't be anything in between.
What is the molecular mass of substance each molecule of which contain 4 carbon atoms and 10 hydrogen atoms.?
This would be C4H10 and the molecular mass is (12x4) +(1x10) = 48 + 10 = 58g/mole.
How many grams in 2 moles of HCI?
A Mole is the molecular weight expressed in grams. So for example water H2O: the molecular weight of oxygen is 16 and hydrogen is 1 so the total molecular weight of water is 18 (16 for one atom of oxygen plus 2x1 for the two atoms of hydrogen). For HCl, the atomic weight of Cl is 35 and H is 1 so the total molecular weight is 36. So 1 Mole of HCl is 36 grams. If you have 2 moles, it would be 72 grams.
What is the molecular weight of N2?
The relative atomic mass of N is 14.0. This is obtained from the periodic table. Nitrogen exist as diatomic molecules, and one molecule of N2 would have molecular mass of 28.0.
What shape would a molecule of hydrogen sulfide have?
A hydrogen sulfide molecule, H2S, has a bent shape, similar to that of a water molecule.
