With a mass of zinc used .5g and volume of 6M HCI used is 20mL what are the moles of zinc that react and what

Question

also, if anyone could help w/ this as well, I would be grateful. THANKS!!! Molar volume of the ideal hydrogen gas at room temperature (Volume/moles), expressed as L/mol at X degrees C and a pressure of 1 atmosphere:

Answer 1

find moles:

0.5 grams @ 65.39 g/mol = 0.007646 moles of Zn

0.020 litres @ 6 mol/litre = 0.120 moles of acid

since they react: 1 Zn & 2 HCl -->1 ZnCl2 & 1H2,...

zinc is the limiting reagent

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first answer : all of the 0.0076 moles of Zinc react

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I can see that you were looking for something else as well, but it got cut off

if you want the volume of H2 that would be produced in this reaction @ 1 atm & room temp,... I have t guess that room temp might be 20 Celsius (295 K)

PV=nRT

(1atm)(V) = 0.0076 moles (0.08206 L-atm/mol-K)(295K)

apprximate volume = 0.184 litres

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if you have been given the volume of H2 produced & are asked to vind molar volume @  room temp: take the volume & divide by 0.0076 moles of H2 produced, it might be around 24 litres / mole @ room temp