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ivolga24 [154]
3 years ago
4

Which measurement below represents the heaviest mass? which measurement below represents the heaviest mass? 1 mg 1 kg 1 pg 1 mg

1 dg?
Chemistry
1 answer:
frutty [35]3 years ago
5 0

Answer:

            1 Kg

Explanation:

Let us convert all given masses into Kg and compare it with 1 Kg.

1) 1 mg;

                   1 mg  =  1.0 × 10⁻⁶ Kg

Hence it is far more lighter than 1 Kg.

2) 1 pg;

                   1 pg  =  1.0 × 10⁻¹⁵ Kg

Hence it is also far more lighter than 1 Kg.

3) 1 dg;

                   1 dg  =  1.0 × 10⁻⁴ Kg

Hence it is also far more lighter than 1 Kg.

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Which three forces can affect an object without contact?
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Answer:

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Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains 1.70 grams of Ca. Fluorite is
andrew11 [14]

Answer:

The richer source of calcium is fluorite.

Explanation:

Percentage of element in compound :

=\frac{\text{mass of element}}{\text{Mass of compound}}\times 100

1. Dolomite is a carbonate of magnesium and calcium:

Given mass of dolomite = 7.81 g

Mass of calcium present in given mass of dolomite = 1.70 g

Percentage of calcium in Dolomite:

=\frac{1.70 g}{7.81 g}\times 100=21.77\%

2. Fluorite is a mineral of calcium and fluorine:

Given mass of fluorite = 2.76 g

Mass of fluorine present in given mass of fluorite = 1.34 g

Percentage of fluorine in fluorite :

=\frac{1.34 g}{2.76 g}\times 100=48.55\%

Percentage of calcium in fluorite = 100% - 48.55 % = 51.45%

Percentage of calcium in fluorite > Percentage of calcium in Dolomite

51.455 > 21.77%

So, the richer source of calcium is fluorite.

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Which of the following is true about the law of consevation<br>​
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Answer:

just look it up

Explanation:

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Which diagram best represents the relationship masses of subatomic particles?
melomori [17]

Answer:

Third figure shows the best relationship.

(c) is correct option.

Explanation:

Given that,

The diagram best represents the relationship masses of subatomic particles.

We know that,

The mass of proton and neutron are same.

The mass of electron is less than mass of the  proton and neutron.

We need to find the best represents the relationship masses of subatomic particles

According to figure,

Third figure shows the best represents the relationship masses of subatomic particles.

Hence, Third figure shows the best relationship.

(c) is correct option.

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