The mass of Au is 19.7 g
The chemical reaction may be
Au₂S₃ + 3H₂ → 2Au + 3H₂S
1 mole of Au₂S₃ gives 2 mole of Au
Then 0.0500 mol of Au₂S₃ gives
0.0500 × 2 / 1
= 0.10 moles.
To find mass
Mass = moles × molar mass
Moles = 0.10.
Molar mass = 197 g
Mass = 0.10 × 197
= 19.7 g
Hence the mass of Au produces is 19.7 g
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PH is a scale of how much ionic hydrogen is in a substance. The scale runs from 0 to 14. The lower the number on the scale, the more acidic the substance is (that means there are more hydrogen ions than hydroxide ions). The higher the number on the scale, the more basic the substance is (that means that there are more hydroxide ions than hydrogen ions).
Answer:
<u><em>Pasteurization:</em></u>
It is the process in which any beverage such as milk or any other liquid is heated at a certain temperature to kill the bacteria and microorganisms that can cause spoilage or fermentation or any other disease.