For the following chemical reaction, if 40.0 grams of o2 are completely reacted, how many grams of co2 will be produced? c2h4 + 3 o2 --> 2 co2 + 2 h2o

Hey there!:

Molar mass:

O2 = 31.99 g/mol   ;   CO2 = 44.01 g/mol

Given the reaction:

C2H4 + 3 O2 --> 2 CO2 + 2 H2O

3 * 31.99 g O2 2 * 44.01 g  CO2

40.0 g O2 mass of CO2 ??

mass of CO2 = 40.0 * 2 * 44.01 / 3 * 31.99

mass of CO2 = 3520.8 / 95.97

mass of CO2 = 36.68 g

Hope that helps!

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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