Advertisements
Advertisements
Question
Deduce the number of molecules of the following compound in the given quantity.
8.8g carbon dioxide
Advertisements
Solution
Number of moles in CO2 = `("Mass of CO"_2" in grams")/"Molecular mass of CO"_2`
= `8.8/44`
= 0.2 mole
∴ 0.2 moles of CO2 contains = 0.2 × 6.022 × 1023 molecules = 1.2044 × 1023 molecules.
∴ The number of molecules in 8.8 grams of carbon dioxide is 1.2044 × 1023.
APPEARS IN
RELATED QUESTIONS
If one mole of carbon atoms weighs 12 gram, what is the mass (in gram) of 1 atom of carbon?
Calculate the molar mass of the following substance:
Hydrochloric acid, HCl
What is the mass of 1 mole of nitrogen atoms?
Convert into mole.
22 g of carbon dioxide
Choose the correct answer from the options given below:
The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:
[Given that H = 1, O = 16]
What is a group of 6.022 × 1023 particles known as ?
How many atoms are there in 0.25 mole of hydrogen ?
Show by means of calculations that 5 moles of CO2 and 5 moles of H2O do not have the same mass. How much is the difference in their masses ?
Explain the term:
Mole
Fill in the blank.
One a.m.u. is the mass of ______ atom of C12.
Which of the following would weight the least?
[Atomic masses : Ag = 108, N - 14, O = 16,C = 12]
How many grams of CO2 is present in 0.1 mole of it?
Calculate the number of moles of CO2 which contain 8.00 g of O2
Calculate the number of moles of methane in 0.80 g of methane.
Calculate the mass of 0.1 mole of the following:
Mg
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
Calculate the number of atoms in the following:
52 amu of He
Which of the following weighs the least?
How many grams are there in the following?
4 moles of the phosphorous molecule, P4
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol–1.
