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प्रश्न
Define or explain the term:
Relative atomic mass
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उत्तर
The relative atomic mass of an element is the number of times one atom of the element is heavier than `1/12` times of the mass of an atom of carbon-12.
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संबंधित प्रश्न
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:
Nitric acid, HNO3
Calculate the number of moles in 12g of oxygen gas.
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What volume of dinitrogen oxide is produced at the same time as 8.96 L of steam?
The number of molecules in 4.25 g of ammonia is ______.
Correct the statement, if required.
One mole of chlorine contains 6.023 x 1010 atoms of chlorine.
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.
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 |
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
magnesium oxide
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Calcium carbonate
