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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.
What is the RFM of H20?
RFM stands for Relative Formula Mass, and is calculated by adding up the atomic masses of all the elements in the chemical formula of a compound. In the case of water (H2O), the RFM would be calculated as: (2 atoms of hydrogen x atomic mass of hydrogen) + (1 atom of oxygen x atomic mass of oxygen). The atomic masses of hydrogen and oxygen are approximately 1 and 16 respectively, so the RFM of H2O would be approximately 18.
What is the relative formula mass of iron sulphate?
The relative formula mass of iron sulfate is 151.85 g/mol. It is calculated by adding the atomic masses of all the elements in the compound, which are iron (Fe), sulfur (S), and oxygen (O).
What is the relative formula mass of Sodium hydroxide?
it is 30 g/mol. Na is 13, O is 16 and H is 1 and NaOH adds up to 30.
What is copper sulfates relative formula mass?
The anhydrous copper sulfate (CuSO4) has a molar mass of 159,62.
Why one mole of hydrogen molecules and one mole of hydrogen atoms have different masses?
Because each hydrogen molecule contains 2 hydrogen atoms!
What is the Calculation of relative formula mass of Mg(OH)2.?
The relative formula mass of Mg(OH)2 can be calculated by adding the atomic masses of all the elements in the compound. The atomic mass of magnesium (Mg) is 24.305 amu, oxygen (O) is 15.999 amu, and hydrogen (H) is 1.008 amu. Therefore, the relative formula mass of Mg(OH)2 is calculated as follows: Mg = 24.305 amu, O = 15.999 amu x 2 = 31.998 amu, H = 1.008 amu x 2 = 2.016 amu. Adding these values together gives a total relative formula mass of Mg(OH)2 as 24.305 + 31.998 + 2.016 = 58.319 amu.
What is the relative formula mass of copper?
The relative atomic mass of copper is approximately 63.55. To calculate the relative formula mass of copper, you sum the atomic masses of its atoms, which in this case would just be the atomic mass of copper. Therefore, the relative formula mass of copper would be 63.55.
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.
What is the RFM of H20?
RFM stands for Relative Formula Mass, and is calculated by adding up the atomic masses of all the elements in the chemical formula of a compound. In the case of water (H2O), the RFM would be calculated as: (2 atoms of hydrogen x atomic mass of hydrogen) + (1 atom of oxygen x atomic mass of oxygen). The atomic masses of hydrogen and oxygen are approximately 1 and 16 respectively, so the RFM of H2O would be approximately 18.
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.
What is the relative atomic mass of hydrogen peroxide?
The relative atomic mass of hydrogen peroxide, H2O2, is approximately 34.01 g/mol. This value is calculated by adding the atomic masses of the elements in the molecule (2 hydrogen atoms and 2 oxygen atoms).
Who was The first attempt at publishing a list of relative atomic masses?
John Dalton tried to work out the relative masses of atoms; but his calculations were wrong, although the principle was correct. He was, however, the first to establish a table of atomic masses with hydrogen, the lightest atom, as the standard.
Why are gram formula masses called relative masses?
They are called relative masses because all of the masses of the elements are measured relative to the mass of an isotope of carbon called carbon-12. Carbon-12 has been assigned a mass of exactly 12 atomic mass units. One atomic mass unit has an actual value of 1.660538782(83)×10^−27 kg.
What is the relative formula mass of each of the following compounds of potassium dichromate?
The relative formula mass of potassium dichromate (K2Cr2O7) is calculated by adding the atomic masses of its individual elements. The atomic masses of potassium (K), chromium (Cr), and oxygen (O) are 39.1, 52, and 16 respectively. Therefore, the relative formula mass of potassium dichromate is 294.2 g/mol.
Is this statement true or false The isotope hydrogen-1 is the standard used for the relative scale of atomic masses?
True. Hydrogen-1, also known as protium, is the standard used for the relative scale of atomic masses. Its mass is defined as exactly 1 atomic mass unit (amu) on the atomic mass scale.
What is the relative formula mass for MgCO3?
The relative formula mass of MgCO3 is 84.3 g/mol. This is calculated by adding the atomic masses of magnesium (24.3 g/mol), carbon (12.0 g/mol), and three oxygen atoms (16.0 g/mol each) together.
