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Hey Guys--
Can ya'll help me on these few questions. It is from the ADA booklet. I totally suck in General Chemistry and I feel like a ****** because I don't understand some stuff. Only two more weeks!
I figured these out using common sense but I wanted to know if there were specific formulas to figure these out incase they get complicated on the exam.
1. A flask weighs 95 g empty. When filled with 200mL of liquid, the weight is 328 g. What volume in mL would 1000g of the liquid occupy?
2. If one mole of N2 and 1 mole of H2 are mixed and allowed to react according to N2 + 3H2-----> 2NH3. What is the maximum number of moles of NH3 that could be produced?
3. During a titration it was determined that 30 mL of a 0.100 M Ce4+ solution was required to react completely with 20 mL of a 0.150 M Fe2+ solution. Which one of the reactions occurred?
A. Ce4+ +3Fe2+ + H2O --> 3Fe3+ + CeO- + 2H+
b. 2Ce4+ + Fe2+ --> Fe4+ + 2Ce3+
c. Ce4+ + fe2+ --> Fe3+ + Ce3+
d. Ce4+ + 2Fe2+ --> 2Fe3+ + Ce2+
e. ce4+ + 2Fe2+ --> 2Fe4+ + Cs2+ + 2e-
4. If a solution which is .5M in compound X decomposes for 5.0 minutes at an average rated of .04 M/min, what is the new concentration of X?
THANK YOU !!!!!!!!!!!!!!!!
Can ya'll help me on these few questions. It is from the ADA booklet. I totally suck in General Chemistry and I feel like a ****** because I don't understand some stuff. Only two more weeks!
I figured these out using common sense but I wanted to know if there were specific formulas to figure these out incase they get complicated on the exam.
1. A flask weighs 95 g empty. When filled with 200mL of liquid, the weight is 328 g. What volume in mL would 1000g of the liquid occupy?
2. If one mole of N2 and 1 mole of H2 are mixed and allowed to react according to N2 + 3H2-----> 2NH3. What is the maximum number of moles of NH3 that could be produced?
3. During a titration it was determined that 30 mL of a 0.100 M Ce4+ solution was required to react completely with 20 mL of a 0.150 M Fe2+ solution. Which one of the reactions occurred?
A. Ce4+ +3Fe2+ + H2O --> 3Fe3+ + CeO- + 2H+
b. 2Ce4+ + Fe2+ --> Fe4+ + 2Ce3+
c. Ce4+ + fe2+ --> Fe3+ + Ce3+
d. Ce4+ + 2Fe2+ --> 2Fe3+ + Ce2+
e. ce4+ + 2Fe2+ --> 2Fe4+ + Cs2+ + 2e-
4. If a solution which is .5M in compound X decomposes for 5.0 minutes at an average rated of .04 M/min, what is the new concentration of X?
THANK YOU !!!!!!!!!!!!!!!!