Advertisements
Advertisements
Question
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Calcium carbonate
Solution
Molar mass of CaCO3 = 40 + 12 + 3(16) = 100 g/mol
Number of moles of a substance = `"Mass of the substance in grams"/"Molecular mass of the substance"`
Let Mass of the substance in grams be x,
`0.2 = "x"/100 = 20`g
we need, 20 g of CaCO3 for obtaining 0.2 moles of CaCO3.
APPEARS IN
RELATED QUESTIONS
Calculate the molar mass of the following substance:
Hydrochloric acid, HCl
Convert into mole.
22 g of carbon dioxide
What is the mass of 0.2 mole of oxygen atoms?
What is a group of 6.022 × 1023 particles known as ?
What is the mass of 0.2 mole of oxygen atoms ?
Fill in the following blanks :
60 g of carbon element are .............. moles of carbon atoms.
What is meant by ‘a mole of carbon atoms’ ?
Which of the following pair of elements represents a mole ratio of 1 : 1 ?
Explain with examples what is meant by a 'mole' of a substance.
The relative atomic mass of Cl atom is 35.5 a.m.u. Explain this statement.
Fill in the blank
Avogadro's number is equal to ______
Which of the following would weight the least?
[Atomic masses : Ag = 108, N - 14, O = 16,C = 12]
Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)
Find the number of moles in 10 g of CaCO3.
What mass of Ca will contain the same number of atoms as are present in 3.2 g of S?
What is Molar volume of a gas?
Calculate the number of moles in 27g of Al.
Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight.
- Whose container is heavier?
- Whose container has more number of atoms?
Deduce the number of molecules of the following compound in the given quantity.
7.1g chlorine
