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Ackussinglake63
24.08.2019 •
Chemistry
Magnesium reacts with hydrochloric acid (hcl) as follows. mg(s) + 2hcl(aq) --> mgcl(2)+h(2)(g) how many milliliters of hydrogen gas are produced by the reaction 0.020 mol of magnesium with excess of hydrochloric acid at stp? 0.448 ml 0.45 ml 448 ml 450 ml
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Ответ:
0.020 mol Mg ( 1 mol H2 / 1 mol Mg ) = 0.020 mol H2 gas is produced
To convert the number of moles to volume, we use the conditions at STP of 1 mol of a substance is equal to 22.4 L. Thus,
0.020 mol H2 (22.4 L / 1 mol) (1000 mL / 1 L) = 448 mL
Ответ:
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Explanation: