atoms and molecules
Quiz by manju
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3 questions
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- Q1the mass of reactants before and after a chemical reaction will be same. This is in accordance withlaw of constant proportionlaw o definite proportioncharles lawlaw of consertion of mass30s
- Q2in a reaction 10g of Na reacts with 3 g of HCl to give 7.5g of NaCl and remaining amount of hydrogen. the amount of hydrogen is5.5 g3.5g3.4 g4.5 g30s
- Q3mole contains................................particles6X10 ^296.023X 10 ^237.023X 10 ^236.02X10 ^2130s