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NikAS [45]
3 years ago
13

Harry has a sample of an unknown material. The sample has a mass of 81 grams and a volume of 0.9 cubic centimeters. What is the

density of the sample in grams per cubic centimeter?
Chemistry
1 answer:
Salsk061 [2.6K]3 years ago
8 0
Density = mass/volume
density = 81 grams/0.9 cubic centimetersdensity = 90 grams per cubic centimeter
The density of the sample is 90 grams per cubic centimeter.
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What are the groups on the periodic table let us predict how elements will react
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Answer:

The vertical columns are called groups.

Explanation:

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Vertical columns are called groups while horizontal rows are called periods.

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The elements in same group have similar properties and can react in a similar way.

The elements in same group have same number of valance electrons that's why their reactivity is same.

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BaO  + H₂O   →  Ba(OH)₂

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With sulfur,

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Answer:

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Explanation:

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