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calculate the relative molecular mass of the following gases from the information given 0.4 g of oxygen is 288 and interstate at STP
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Aug 13, 2023
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Chemistry Form 3
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0715220XXX
the mole: formulae and chemical equations
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Aug 14, 2023
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0105985XXX
0.0013888889
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Aug 14, 2023
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0105985XXX
0.0013888889
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an evacuated flask has a mass of 90.050 grams when filled with gas at STP the plus 2 is 19.121 grams if the volume of the flask was 22.2 centimetres cubed calculate the relative molecular mass of gas-x and suggest is identity
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Aug 13, 2023
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a mass of 5.125 g washing soda crystals are disacsolved and made up to 250 CM3 of solution at 25.07% of the solution required 35.8 CM3 of 0.05 molar sulphuric VI acid for neutralization calculate the percentage of sodium carbonate in the crystals
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when 4 g of metal carbonate was dissolved in 160 cubic centimetre of 1M hydrochloric acid and then the resultant solution diluted to 1 L, 25 cm of the solution required 20 cubic centimetre of 0.1 M sodium hydroxide solution for complete neutralisation calculate the number of moles per litre of exercise hydrochloric acid that reacted with sodium hydroxide
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Mar 10
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0705145XXX
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when 4 g of metal carbonate was dissolved in 160 cubic centimetre of 1M hydrochloric acid and then the resultant solution diluted to 1 L, 25 cm of the solution required 20 cubic centimetre of 0.1 M sodium hydroxide solution for complete neutralisation calculate the number of moles per litre of exercise hydrochloric acid that reacted with sodium hydroxide
asked
Mar 10
in
Chemistry Form 3
by
0705145XXX
the mole: formulae and chemical equations
when 4 g of metal carbonate was dissolved in 160 cubic centimetre of 1m hydrochloric acid and then the resultant solution diluted to 1 l
25 cm of the solution required 20 cubic centimetre of 0.1 m sodium hydroxide solution for complete neutralisation calculate the number of moles per litre of exercise hydrochloric acid that reacted with sodium hydroxide
0
votes
1
answer
An organic compound J has the following percentage by mass, carbon 64.86%, hydrogen 13.51% and the rest is oxygen. The relative molecular mass of the compound is 74. C = 12, O = 16, H = 1)
asked
Aug 17, 2021
in
Chemistry Form 3
by
anonymous
the mole-formulae and chemical equations
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