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Softa [21]
3 years ago
5

What is the density of a rock that has a mass of 555 g and a volume of 101.1 cm?

Chemistry
2 answers:
marin [14]3 years ago
7 0

Answer:

the volume should be in cubic cm so I assumed that you wanted to write the same . then the answer is 5489.07 kg/m^3

Anuta_ua [19.1K]3 years ago
3 0

Answer:

\boxed {\boxed {\sf d\approx5.49 \ g/cm^3}}

Explanation:

Density can be found by dividing the mass by the volume.

d=\frac{m}{v}

The mass of the rock is 555 grams and the volume is 101.1 cubic centimeters.

m=555 \ g \\v= 101.1 \ cm^3

Substitute the values into the formula.

d=\frac{555 \ g}{101.1 \ cm^3}

Divide.

d=5.48961424 \ g/cm^3

Let's round to the nearest hundredth to make the answer more concise.

The 9 in the thousandth place tells us to round up. In the tenth place, the 8 will become a 9.

d\approx5.49 \ g/cm^3

The density of the rock is about <u>5.49 grams per cubic centimeter.</u>

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Answer:

3,4,1 and 6,5,2

Explanation:

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Radio waves

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5 0
3 years ago
Write the Lewis structure for ethanol (CH3CH2OH), the alcohol found in alcoholic beverages, then answer the following questions:
hodyreva [135]

Answer :

(1) The number of valence electrons present in the compound is, 20

(2) The number of bonded electrons present in the compound is, 16

(3) The number of lone pair electrons present in the compound is, 4

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Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

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Therefore, the total number of valence electrons in CH_3CH_2OH = 2(4) + 6(1) + 6 = 20

According to Lewis-dot structure, there are 16 number of bonding electrons and 4 number of non-bonding electrons or lone pair of electrons.

The Lewis-dot structure of CH_3CH_2OH is shown below.

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