Step 1: Balance the equation: CH2 + O2 → CO2 + H2O Remember: Mole ratios come from balanced equations only.
1. 2.4 x 10particles of oxygen are used up in the reaction. How many
moles of carbon dioxide (CO2) are produced?
2. How many moles of oxygen does it take to produce 9.60 x 102
molecules of carbon dioxide (CO)?
3. How many moles of carbon dioxide (CO) are produced with using
3.50 x 10” particles of acetylene (CH)?
4. How many molecules of oxygen (O2) does it take to produce 18 moles
of water (H20)?
5. How many moles of acetylene (CH) does it take to produce 12.5 x
10% moles of water (H20)?

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.