Advertisements
Advertisements
प्रश्न
Calculate the number of moles of CO2 which contain 8.00 g of O2
उत्तर
1 mole of CO2 contains O2 = 32g
So, CO2 having 8 gm of O2 has no. of moles = `8/32`
= 0.25 moles
APPEARS IN
संबंधित प्रश्न
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]
How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 23 u)
If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen.
Which of the following would weight the least?
[Atomic masses : Ag = 108, N - 14, O = 16,C = 12]
What is the value of molar volume of a gas at S.T.P?
Define or explain the term:
Relative atomic mass
Calculate the mass of 0.1 mole of the following:
CaCO3
(Ca = 40, Na = 23, Mg = 24, S = 32, C = 12, Cl = 35.5, O = 16, H = 1)
Solid ammonium dichromate decomposes as:
\[\ce{(NH4)2Cr2O7 -> N2 + Cr2O3 + 4H2O}\]
If 63 g of ammonium dichromate decomposes. Calculate the quantity in moles of nitrogen formed.
Match the following.
| 1. | 8 g of O2 | - | 4 moles |
| 2. | 4 g of H2 | - | 0.25 moles |
| 3. | 52 g of He | - | 2 moles |
| 4. | 112 g of N2 | - | 0.5 moles |
| 5. | 35.5 g of Cl2 | - | 13 moles |
The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.
