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A 0.24 g of coumpound of oxgen and boro...

A 0.24 g of coumpound of oxgen and boron was found by analysis to contain 0.096 g of born and 0.144g of oxygen. Calculate the percentage composition of the compound by weight.

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PSEB-Atoms and Molecules-EXERCISE
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  3. Write the chemical formula of the following :Magnesium chloride

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  4. Write the chemical formula of the following :Calcium oxide

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  6. Write the chemical formula of the following :Aluminium chloride

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  9. Give the names of the elements present in the following compounds :Hyd...

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  11. .Give the names of the elements present in the following compounds :Po...

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  15. Calculate the molar mass of the following substances :Hydrochloric aci...

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  16. Calculate the molar mass of the following substances : Nitiric acid,HN...

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  17. What is the mass of : 1 mole of nitrogen atoms ?

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  18. What is the mass of :) 4 moles of aluminium atoms (Atomic mass of alum...

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  19. What is the mass of : 10 moles of sodium sulphite (Na2SO3)?

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  20. Convert into moles : 12g of oxygen gas

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