no of moles in 10g of h2
Answers
10 g is the mass of the substance.
H2 - molar mass is 2
Mass / molar mass = amount (number of moles)
10 / 2 = 5 moles
Particle (number of hydrogen molecules) = amount * avogadro's constant
5 * 6.02 * 10 (to the power of 23) = 3.01107043 × 10 (to the power of 24) mol^(-1)
Answer:
The no. of moles in 10 grams of the H₂ molecule is 5 mol.
Explanation:
The amount of substance is defined by the unit called a mole. One mole of any substance is equal to the Avogadro Number, 6.023 × 10²³. The SI unit of a mole is “mol”. It represents the number of chemical elements and may be atoms, formula units, and molecules, based on the substance. It can also be defined as the mass of that substance that contains the same number of units such as atoms in 12 grams of 12 C.
The formula for calculating the number of moles of any substance is -
No of moles (n) = Given Mass of the Substance (m)/Molar Mass of the substance (M)
Calculations -
The given mass - 10 grams
The molar mass of the H₂ molecule - 2 grams/mol
No. of moles = 10/2 = 5 mol
The no. of moles in 10 grams of the H₂ molecule is 5 mol.
#SPJ2