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lubasha [3.4K]
3 years ago
10

1.

Chemistry
1 answer:
natta225 [31]3 years ago
4 0
The Moon completes one orbit around the Earth in approximately 27 1/3 days and completes one cycle of its phases in approximately 29 1/2 days. The correct option among all the options that are given in the question is the second option. I hope that this is the answer that has come to your great help.
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A piece of metal ore has a density of 1.72 g/mL. When a student places it into a graduated cylinder containing water, the liquid
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9g

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; Making mass the subject of formula in the above equation,

Mass = Density × Volume

; Mass = 1.72 × 5.22

; Hence the mass = 8.9784

= 9g

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Determination of the amount of patassium hydroxide in patassium hydroxide/Sodium carbonate mixture
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percentage by mass of each element in a compound.

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