Element M reacts with water at room temperature to produce 0.2 dm3 of gas. Determine the mass of M which was...

      

Element M reacts with water at room temperature to produce 0.2 dm3 of gas. Determine the mass of M which was reacted with water. (Molar gas volume at room temperature is 24 dm3, Relative atomic mass of M = 7).

  

Answers


john
Moles of H = 200 / 24000
= 0 .0083

Moles of M = 0.0083 # 2 = 0.0166
Moles of M RAM
= 0 .0166

Mass of M = 0.0166 # 7
Mass of M = 0.117 g
john3 answered the question on October 4, 2017 at 12:28


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