mvongphakdy4096 mvongphakdy4096

25-03-2020
Chemistry

contestada

How many water molecules are created when 32 grams of oxygen react completely with 4.0 grams of hydrogen?

a. 2

b. 20

c. 6.02 × 1023

d. 1.2 × 1024

Respuesta :

emaikwuvictor emaikwuvictor

27-03-2020

Answer:

d. 1.2 × 1024

Explanation:

From the equation of reaction

2H2 + O2= 2H2O

i.e 2mole(4g) of hydrogen requires 1 mole(32g) of oxygen to produce 2mole (2×6.02×10^23 molecules) of H2O= 1.2×20^24 molcules of water.

NB: 1 mole of H2O contains 6.02×10^23 molecules of H2O

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