Advertisements
Advertisements
प्रश्न
Calculate the number of moles in 27g of Al.
Advertisements
उत्तर
27 g of Al
Number of moles = `"Mass"/"Atomic mass"`
Number of moles in 27 g of Al = `27/27` = 1 mole.
APPEARS IN
संबंधित प्रश्न
The percentage composition of a gas is Nitrogen 82.35%, Hydrogen 17.64%. Find the empirical formula of the gas. [N = 14, H = 1]
What weight of each element is present in 1.5 moles of sodium sulphite, Na2SO3 ?
(Atomic masses : Na = 23 u ; S = 32 u ; O = 16 u)
Fill in the blank
Avogadro's number is equal to ______
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
Determine the percentage of oxygen in the ammonium nitrate?
What is the value of molar volume of a gas at S.T.P?
How many grams of CO2 is present in 0.1 mole of it?
Four grams of caustic soda contains ______.
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.
Correct the statement, if required.
Under the same conditions of temperature and pressure, equal volumes of all gases contain the same number of atoms.
