Advertisements
Advertisements
प्रश्न
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1.
Advertisements
उत्तर
Atomic mass of Mg = 24 g mol-1
24 g of Mg = 1 mol
12 g of Mg = `12/24`
= 0.5 mol
APPEARS IN
संबंधित प्रश्न
Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
The percentage composition of a gas is Nitrogen 82.35%, Hydrogen 17.64%. Find the empirical formula of the gas. [N = 14, H = 1]
Calculate the number of moles in 12g of oxygen gas.
Correct the following statement :
Equal masses of all gases under identical conditions contain the same number of molecules.
Explain the term:
Molar volume
Calculate the mass of 0.1 mole of the following:
CaCl2
(Ca = 40, Na=23, Mg =24, S=32, C = 12, Cl = 35.5, O=16, H=1)
If phosphorus is considered to contain P4 molecules, then calculate the number of moles in 100g of phosphorus?
The number of molecules in 4.25 g of ammonia is ______.
Correct the statement, if required.
The relative atomic mass of an element is the number of times one molecule of an element is heavier than `1/12` the mass of an atom of C12.
Deduce the number of molecules of the following compound in the given quantity.
7.1 g chlorine
