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cells are made up of nucleus and cytoplasm and it's contained within the cell membrane
Answer: it has 4 electrons surrounding it. Every electron wants to be bonded to another electron. That means every atom want 8 electrons total. Carbon on its own only has 4 electrons. That means it can make 4 bonds.
Explanation: it has 4 electrons surrounding it. Every electron wants to be bonded to another electron. That means every atom want 8 electrons total. Carbon on its own only has 4 electrons. That means it can make 4 bonds.
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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