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Question

How many grams of O2  will be required to make CO2  by burning 12 g of C completely? (C = 12, 0 = 16)

  1. 32 g
  2. 12 g
  3. 16 g
  4. 44 g
WBBSE Class X Physical Science Chemical Calculations 01 Mark 2023

Answer

a. 32 g

Explanation:

C   +  O2   ​→  CO2​

12 g   32 g      44 g

From the balanced equation, 12 g of carbon requires 32 g of O2

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