For this you need the Atomic Mass of Cr. Take the number of moles and multiply it by the Atomic Mass. Divide by one mole for units to cancel.
11.9 moles Cr × (52.0 grams) =618.8 grams Cr
For this you need the atomic mass of Cr. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel.
11.9 moles Cr × (52.0 grams) =618.8 grams Cr
Assuming the Cr is existing purely as Cr, and is not bonded to another Cr atom or any other compound:
First we have to calculate the number of moles of Cr. This is the mass divided by the molecular weight, so 14.9 / 51.996. This is approx. equal to 0.287.
We then need to multiply this by Avogadro's number, which is the number of atoms in one mole. So we have 0.287 x ( 6.022 × 1023 ), which is equal to 1.73 x 1023 atoms.
Let us use comparative stoichiometry to find out. ( I am betting on the hydrogen out of experience )
1.1 grams hydrogen (1 mole H/1.008 grams)(6.022 X 1023/1 mole H)
= 6.6 X 1023 atoms of hydrogen
=========================================
6.6 X 1023/1.7 X 1023
= 3.8 times more hydrogen atoms than chromium atoms
Atomic mass of chromium, Cr = 52.0
Amount of Cr = 11.9/52.0 = 0.229mol
There are 0.229 moles of chromium in a 11.9g pure chromium sample.
1.10 g of hydrogen atoms has more atoms.
Approx 0.2635 moles.
0.229
A molecule may be one or more atoms, where as an atom can only be one atom. For instance there are hydrogen atoms, and diatomic hydrogen molecules.
They have the maximum number of hydrogen atoms.
None. Hydrogen phosphide, more commonly called phosphine, contains only hydrogen and phosphorus.
They have the same amount of hydrogen. All water molecules have two hydrogen atoms and one oxygen atom.
unsaturated fat -biology student at U of Manitoba
HYDROGEN
Oxygen atoms weigh more than Hydrogen atoms.
Yes Amino acids are made up of an amino group which has 2 hydrogen atoms and a carboxyl group which also has 2 hydrogen atoms. It then has other groups attached to it which could have many many more hydrogen atoms added to it
The empirical formula for sulphuric acid is H2SO4 which would indicate 2 hydrogen atoms for each sulpher atom (and 4 oxygen atoms). So there are twice as many hydrogen atoms as sulpher atoms.
There are about 15×1029 kilograms of hydrogen in the Sun so more than 1 ×1055 atoms
There are 12 atoms of hydrogen in a particle of glucose
Potatoes and apples
substituted hydrocarbon
By number of atoms it has more hydrogen, by mass it has more oxygen. Each water molecule contains two hydrogen atoms and one oxygen atom. However, a typical oxygen atom has about 16 times the mass of a typical hydrogen atom.
Yes. The electronegativity of chlorine is more than that of hydrogen. As such, the electrons are closer towards chlorine than hydrogen in HCl.
This is because they have a large number of hydrogen atoms attached to the carbon atoms
A molecule may be one or more atoms, where as an atom can only be one atom. For instance there are hydrogen atoms, and diatomic hydrogen molecules.