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प्रश्न
Define the term:
Mole
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उत्तर
Mole is the amount of a substance containing elementary particles like atoms, molecules or ions in 12 g of carbon - 12.
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संबंधित प्रश्न
What is the mass of 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?
What is the mass of 0.2 mole of oxygen atoms?
One of the following elements has an atomicity of ‘one’. This element is :
Fill in the following blanks :
64 g of oxygen gas contains ................ moles of oxygen atoms.
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
Sodium chloride
Two oxides of a metal (M) have 20.12% and 11.19% oxygen. The formula of the first oxide is MO. Determine the formula of the second oxide.
Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)
A gas cylinder can hold 1 kg of hydrogen at room temperature and pressure.
(a) Find the number of moles of hydrogen present
(b) What weight of CO2can the cylinder hold under similar conditions of temperature and pressure? (H = 1 C = 12, O = 16)
(c) If the number of molecules of hydrogen in the cylinder is X, calculate the number of CO2 molecules in the cylinder with the same conditions of temperature and pressure.
(d) State the law that helped you to arrive at the above result.
Explain the term:
Molar volume
How many grams of HCl are present in 0.1 mole of it?
