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1. 4g H2 reacts with 20g O2 to form water. How much water is formed? 2.It was found that 380mL of a gas at 27◦C and 800mm of Hg weighed 0.455g. Find the molecular weight of the gas. 
Asked by swagatamsaha2002 | 17 Jun, 2018, 11:09: PM
answered-by-expert Expert Answer
Answer of Q.1 
 
The space balnce space equation space of space formation space of space water space is space space space space space space space space space space space space space space space space space space space space space space 2 space straight H subscript 2 space space plus space space space straight O subscript 2 space space space space space space rightwards arrow with blank on top space space space 2 straight H subscript 2 straight O Mol. space wt. colon space space space 4 straight g space space space space space space space space space space space space space 32 space straight g space space space space space space space space space space space space space space space space space space 36 straight g From space above space reaction space it space is space observed space that comma 32 space straight g space of space oxygen space gives space 36 straight g space of space straight H subscript 2 straight O therefore comma space 20 straight g space of space oxygen space equals space open parentheses 36 over 32 close parentheses cross times 20 space equals 22.5 space straight g space of space straight H subscript 2 straight O
 
You can find the answer to the second question in the below link:

It was found that 380mL of a gas at 27◦C and 800mm of Hg weighed 0.455g. Find the molecular weight of the gas. 
Answered by Ramandeep | 18 Jun, 2018, 05:44: PM

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