Question

1) A fellow named Jim is trying to prank one of his coworkers, Dwight. Jim thinks it would be a good idea to use a thermite reaction to melt a hole through Dwight's car. Jim doesn't know much chemistry, so he just mixes together all of the aluminum powder and iron (III) oxide he has, which is 300 g of aluminum and 200 g of iron (III) oxide. After the reaction proceeds to completion, how much of Jim's excess reagent will be leftover? iron (III) oxide MW- 159.69 g/mol] Aluminum + iron (III) oxide → iron + aluminumn oxide A. 140 g B. 621 g C. 67.6 g D. 266 g E. 232 g 2) Consider the double replacement reaction of aqueous solutions of calcium chloride and lithium phosphate. Also consider that you start with 100 g of cacium chloride and 100 g of lithium phosphate. What is the theoretical yield for solid you can generate from this reaction? [CaCl: MW- 110.98 g/mo [ithium phosphate MW 116.89 g/mol [calcium phosphate MW-312.38 g/mol] A. 120 g B. 141 g C. 93.8 g D. 89.1 g E. 133 g 3) Consider the single replacement reaction of copper (II) oxide (MW = 79.55 g/mol) with aluminum metal to produce copper metal and aluminum oxide. Let's also say that you start with 200 g of copper (II) oxide and 200 g of aluminum metal. If you are able to isolate 100 g of copper metal after the reaction is complete, what is your percent yield of copper? [copper (II) oxide MW-79.55 g/mol A, 14.1% B. 33.3 % C, 41.7% D. 62.5% E. 93.5 % 4) Consider the reaction of white phosphorus with oxygen gas to generate tetraphosphorus decox ide. The balanced chemical process has a 솨1--294 1.6 kJ/mol. Also consider that you have 100 g of white phosphorus (Don't tell the government!!) and 100 g of oxygen gas. What is the theoretical yield of heat that you can generate from this reaction if it proceeds to completion'? P oxygen gas tetraphosphorus decoxide A. 1219 kJ B. 1839 kJ C. 2293 kJ D. 3677 k E. 9172 kJ

Please help i have been trying to do these for a while but cant seem to find an answer choice

Answer 1

е"Gas Al : 11-11-t.fo me) : ams is E231 L10-4 16.89 0.o1 0-300 3

cu,o 200-2-Si male 24-55 mola. 2o0 Al 26.a cu 3.51 χ 6 3 .fula 23. 042 lool. L23.04Mzk&CY 100 x 100 -u$- 3%.

30.73 32- 941-6x3.12 ans ß 1839 KJ