Advertisements
Advertisements
प्रश्न
Calculate the number of moles in 1.51 × 1023 molecules of NH4Cl.
Advertisements
उत्तर
1.51 × 1023 molecules of NH4Cl
A number of moles = `"Number of molecules"/"Avogadro’s number" = (1.51×10^23)/(6.023×10^23)` = 0.25 moles.
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Hydrochloric acid, HCl
What name is given to the amount of substance containing 6.022 × 1023 particles(atoms,molecules or ions) of a substance ?
How many moles of calcium carbonate (CaCO3) are present in 10 g of the substance ? (Ca = 40 u ; C = 12 u ; O = 16 u)
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
The equation for the burning of octane is:
\[\ce{2C8H18 + 25O2 -> 16CO2 + 18H2O}\]
- How many moles of carbon dioxide are produced when one mole of octane burns?
- What volume, at STP, is occupied by the number of moles determined in (a)?
- If the relative molecular mass of carbon dioxide is 44, what is the mass of carbon dioxide produced by burning moles of octane?
- What is the empirical formula of octane?
Find the number of molecules in 3.2 g of SO2.
Calculate the number of moles of CO2 which contain 8.00 g of O2
Calculate the number of atoms in the following:
52 moles of He
How many grams are there in the following?
4 moles of the phosphorous molecule, P4
Deduce the number of molecules of the following compound in the given quantity.
7.1 g chlorine
