Friday
March 6, 2015

Homework Help: Chemistry

Posted by Connor on Monday, October 7, 2013 at 6:56pm.

Al(s) + HCl(aq) AlCl3(aq) + H2(g)
Zn(s) + HCl(aq) ZnCl2(aq) + H2(g)
Consider the unbalanced equations above. A 0.200 g sample of a mixture of aluminum and zinc metal is reacted with an excess of hydrochloric acid. Both metals react with hydrochloric acid. The sample produces 168.2 mL of hydrogen gas at STP.

(a) What is the mass percent aluminum in the sample?

(b) What is the mass percent zinc in the sample?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

science - Al(s) + HCl(aq) AlCl3(aq) + H2(g) Zn(s) + HCl(aq) ZnCl2(aq) + H2(g) ...
Chemistry - Calculate the percent purity of a sample of zinc metal if 325 mL of ...
chemistry - A co-op student designed an experiment to collect hydrogen gas by ...
chemistry - Zinc metal reacts with hydrochloric acid (HCl) according to the ...
chem2 - A small piece of zinc is dissolved in 22.29 mL of 0.968 M HCl. Zn (s) + ...
chemistry - how many mililiters of a 0.27 M HCl solution are needed to react ...
chemistry - Q1) 5 liters of Butane gas (C4H10) is reacted with plenty of oxygen ...
chem - How many grams of zinc metal will react completely with 8.2 liters of 3.5...
chemistry - A mixture contained zinc sulfide, ZnS, and lead sulfide, PbS. A ...
Chem - Zinc reacts with HCl to produce ZnCl2 and Hydrogen gas, H2. What volume, ...

Members