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Hydrogen ion reacts with zinc to produce
gas
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Answer:
The answer to your question is:
1.- 320 ml
2.- 0.63 M
Explanation:
Data
V = ? AlBr₃ = 0.157 M
mass = 13.4 g
Process
MW ALBr₃ = 27 + (80x3) = 267 g
267 g -------------------- 1 mol
13.4 g ------------------ x
x = (13.4 x 1) / 267
x = 0.05 moles
Volume = 0.05/ 0.157
= 0.320 l or 320 ml
2.-
NaNO₃ mass = 20.2 g
V = 375 ml
Molarity = ?
MW = 23 + 14 + 48 = 85g of NaNO₃
85 g of NaNO₃ ----------------- 1 mol
20.2 g ----------------- x
x = (20.2 x 1) / 85
x = 0.24 mol
Molarity = 0.24 / 0.375
= 0.63
The correct answer is this one: "the number of electrons that are involved in the bonding of the molecule." Lewis structures help us understand the number of electrons that are involved in the bonding of the molecule. It also helps us know the shape of the molecule, its reactivity and its interaction with other molecules.
There are four unpaired electrons in the
5d sublevel (subshell).
