What is the mass of aluminum metal that releases 22.4 l of hydrogen gas at stp from hydrochloric acid? al(s) + hcl(aq) → alcl3(aq) + h2(g) 18.0 g 81.0 g 9.00 g 40.5 g 27.0 g?

The mass of Al metal that releases 2.4 L of hydrogen gas at STP is calculated as below

AT STP 1 mole =22.4 l
what about 22.4l =? moles
(22.4 L x 1 mole) /22.4 L= 2mole

write the reacing reaction

2Al+ 6 HCL = 2AlCl3 + 3H2
by use of mole ratio between Al to H2 which is 2 : 3 the mole Al = 1 x2/3 = 0.667 moles
mass =moles x molar mass
=0.667 mole x27 g/mol= 18 grams

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What is the mass of aluminum metal that releases 22.4 l of hydrogen gas at stp from hydrochloric acid? __al(s) + __hcl(aq) → __alcl3(aq) + __h2(g) 18.0 g 81.0 g 9.00 g 40.5 g 27.0 g?

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What is the mass of aluminum metal that releases 22.4 l of hydrogen gas at stp from hydrochloric acid? al(s) + hcl(aq) → alcl3(aq) + h2(g) 18.0 g 81.0 g 9.00 g 40.5 g 27.0 g?