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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
- What is the numerical value of Avogardo number ?
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- How many atoms are present in one gram atomic mass of a substance ?
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- How many molecules are present in one gram molecular mass of a substan...
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- What name is given to the number 6.022 xx 10^(23) ?
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- Convert 12 g of oxygen gas into moles.
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- How many moles are 3.6 g of water ?
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- What name is the mass of 0.2 mole of oxygen atoms ?
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- Find the mass of 2 moles of oxygen atoms ?
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- Fill in the following blanks : (a) 1 mole contains "…………." atoms, ...
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- (a) How many atoms are there in exactly 12g of carbon-12 element ? (...
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- Calculate the mass of 12.044 xx 10^(25) molecules of oxygen (O(2)).
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- What is the number of molecules in 1.5 moles of ammonia ?
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- How many moles of calcium carbonate (CaCO(3)) are present in 10 g o...
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- How many moles of O(2) are there in 1.20 xx 10^(22) oxygen molecu...
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- If one mole of nitrogen molecules weighs 28 g, calculate the mass of o...
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- How many moles are there in 34.5 g of sodium ? (Atomic mass of Na = 2...
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- What is the number of zinc atoms in a piece of zinc weighing 10 g ? ...
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- Calculate the mass of 3.011 xx 10^(24) atoms of carbon.
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- If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the ma...
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- How many atoms are there in 0.25 mole of hydrogen ?
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