Tugas Kimia

Selesaikan tugas kelompok di kelas.

Your Turn

1. 2C2H2 + 5 O2 ® 4CO2 + 2 H2O
a. If 3.84 moles of C2H2 are burned, how many moles of O2 are needed?
b. How many moles of C2H2 are needed to produce 8.95 mole of H2O?
c. If 2.47 moles of C2H2 are burned, how many moles of CO2 are formed?

2. 2C2H2 + 5 O2 ® 4CO2 + 2 H2O
a. How many moles of C2H2 are needed to produce 8.95 g of H2O?
b. If 2.47 moles of C2H2 are burned, how many g of CO2 are formed?

3. To make silicon for computer chips they use this reaction
SiCl4 + 2Mg ® 2MgCl2 + Si
a. How many moles of Mg are needed to make 9.3 g of Si?
b. 3.74 g of Mg would make how many moles of Si?
c. How many grams of MgCl2 are produced along with 9.3 g of silicon?

4. The U. S. Space Shuttle boosters use this reaction
3 Al(s) + 3 NH4ClO4 ® Al2O3 + AlCl3 + 3 NO + 6H2O
a. How much Al must be used to react with 652 g of NH4ClO4 ?
b. How much water is produced?
c. How much AlCl3?





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