9g of aluminum metal is added to an excess of hydrochloric acid. the volume of hydrogen gas produced at stp is

Answer 1

9/27 x 3/2 x 22.4

Answer 2

All of those questions are hassle-free stoichiometry ratios. i'm going to aim and be as precise as accessible. a million. check out the final equation. for each a million mol of Zn extra a million mol of H2 is produced. So...in case you upload 20 moles of Zn you will get 20 moles of H2. yet they pick it in grams, so which you multiply the moles of H2 via its molar mass (a million.008) 20(a million.008) = 20.16grams a. 20.2 grams (Rounded to 3 sig figs) 2. in this issue, for each 2 moles of NaN3, you will produce 3 moles of N2 gas. So this time we would desire to artwork backwards. you recognize that 3.one hundred twenty five moles of N2 will fill the air bag. by way of fact it incredibly is a 2 to 3 stochiometric ratio you multiply 3.one hundred twenty five via (2/3) 3.one hundred twenty five(2/3) = 2.083 mol NaN3 to fill the air bag. Now merely convert to grams via multiplying via molar mass. 2.083mol x sixty 5.001g / 1mol = 135g so the respond is c 3. i'm hoping you would be waiting to try this once analyzing the previous 2 I merely typed up yet merely in case. for each 2 moles of sodium you pick a million moles of Cl2. by way of fact there is two cl molecules in Cl2 you purely multiply the atomic mass via 2 and get 70.9g or D. wish this enables.