Answer:
Concentration of = 1.9 *
Explanation:
Find the provided attachment for solution.
It will sink cause it is a rock
Answer: I believe it is A.
Explanation:
The much hydrogen that is produced is 0.02 mol of H₂ (answer B)
Explanation
2K +2H₂O→ 2 KOH + H₂
Use the mole ratio to determine the moles of H₂
From equation above the K :H₂ is 2:1
Therefore the moles of H₂ = 0.04 x 1/2 = 0.02 mol of H₂