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A molecule of water is composed of two atoms of hydrogen and one atom of oxygen if the atomic mass number of hydrogen is 1 and the molecular mass of water is 18 the atomic mass of oxygen must be?
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∙ 13y ago
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∙ 13y ago
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Can Atomic mass be used to determine molecular mass?
Yes, the accumulation of atomic masses of the atoms within a molecule is the molecule's molecular mass.
What is the atomic mass of salt?
Salt can't have an atomic weight because it is not an atom : it is a molecule composed of two atoms. The molecular weight of common salt is approx. 58.4 amu
Who is lightest Hydrogen molecule or methane molecule?
Hydrogen molecule is the lightest because of its atomic mass being less than any other molecule .i.e 1amu (atomic mass unit). Hence Hydrogen molecule is lighter than Methane molecule.
What is the sum of the atomic masses in a molecule?
Molecular mass.
How do you get the molecular mass of glucose?
A molecule of glucose contains 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms. Their atomic masses are 12, 1 and 16 respectively. Therefore the atomic mass of glucose is 6x12+12x1+6x16=180 grams per mole.
Why does hydrogen gas have the symbol H2?
The symbol for atomic hydrogen is H. But hydrogen as a gas molecule consists of two hydrogen atoms, so the formula for molecular hydrogen is H2.
What is the relative mass formula of hydrogen gas?
The molecular mass of hydrogen gas is 2. A molecule of hydrogen gas contains two hydrogen atoms covalently bonded. Since each hydrogen atom has an atomic mass of 1 (as we can derive from the Periodic Table of Elements), the molecular mass of hydrogen gas as a molecule is 1 + 1 = 2.
Can Atomic mass be used to determine molecular mass?
Yes, the accumulation of atomic masses of the atoms within a molecule is the molecule's molecular mass.
What is the atomic mass of salt?
Salt can't have an atomic weight because it is not an atom : it is a molecule composed of two atoms. The molecular weight of common salt is approx. 58.4 amu
How do you calculate Mr?
To calculate the relative molecular mass (Mr) of a molecule, add up the atomic masses of all the atoms in the molecule as shown in its molecular formula. For example, the Mr of H2O (water) is calculated by adding the atomic masses of 2 hydrogen atoms and 1 oxygen atom.
A glucose molecule contains carbon hydrogen and oxygen in the ratio 6 to 12 to 6 What is the molecular formula for glucose?
Molecular formulas can not be determined from information about atomic ratios only. If the ratios stated are atomic ratios, then the empirical formula of the compound is CH2O. If the questioner meant, "A glucose molecule contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms ...", the molecular formula is C6H12O6.
Who is lightest Hydrogen molecule or methane molecule?
Hydrogen molecule is the lightest because of its atomic mass being less than any other molecule .i.e 1amu (atomic mass unit). Hence Hydrogen molecule is lighter than Methane molecule.
Is the molecular weight the same as its atomic weight?
The molecular weight is the sum of the atomic weights of all the atoms contained in the molecule.
Can the atomic mass of a molecule be found if the chemical formula is known?
Well first of all a molecule doesn't have an atomic mass it has a molecular mass. It's molecular mass is found by adding up the atomic masses of all the elements that make up the molecule. These atomic masses are found on a periodic table. For example water has a formula of H20. This means it is made of 2 hydrogen atoms and 1 oxygen atom. Hydrogen has an atomic mass of 1 g/mol while oxygen has an atomic mass of 16 g/mol. So the molecular mass of water is 2 x 1g/mol + 1 x 16 g/mol = 18 g/mol
How do you make atomic hydrogen from molecular hydrogen?
(i) By thermal dissociationWhen molecular hydrogen is heated at 5000C,it dissociates into atomic hydrogen.(ii) By electric dischargeAt o.1 mm Hg to 1.00 mm Hg pressure
What is the atomic size of hydrogen peroxide?
The hydrogen peroxide is a molecule, not an atom.
Can atomic hydrogen be formed by sodium hydride?
When hydrogen is liberated from a compound in a chemical reaction it invariably forms molecular hydrogen, H2, rather than atomic hydrogen.
