Answer:
6.02 x 10²³ electrons
Explanation:
Given parameters:
Mass of H₂ = 2g
Unknown:
Number of electrons = ?
Solution:
To find the number of electrons, we must determine the number of moles of H₂ first.
Number of moles =
Molar mass of H₂ = 2(1) = 2g/mol
Number of moles = = 1mol
1 mole of a substance contains 6.02 x 10²³ particles
the particles can be protons, neutrons, electrons
So,
2g of H₂ will contain 6.02 x 10²³ electrons.
Answer:
Analysis of a sample of a compound composed of carbon, hydrogen, and oxygen shows that the sample contains 18.80 g of C, 2.367 g of H, and 25.04 g of O.
The properties of the compound suggest that the molar mass should be 59.04 g/mol.
How many carbon atoms are there in one molecule of the compound?
Explanation:
Empirical formula mass is
Empirical formula mass =molecular formula mass
Hence,
empirical formula is same as molecular formula.
That is --- .
So, the molecule has two carbon atoms in one molecule of the compound.
