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Novay_Z [31]
3 years ago
5

Pls help i'll mark you the brainlest What force is needed to make ball fall on Earth if it has a mass of 13kg

Chemistry
1 answer:
Arisa [49]3 years ago
8 0

Answer:

gravity.

Explanation:

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Which of the following equations has correct formulas and also is a balanced equation?
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Balance equation : Balanced equation are those equation in which the number of atoms of each element and the total charge must be same on products side and reactants side.

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while the other options has incorrect formulas and also an unbalanced equations.

The correct equation for option A is, CaCO_3\rightarrow CaO+CO_2

The correct equation for option C is, 2Mg+O_2\rightarrow 2MgO

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How the relative density of a substance is related to the density calculate the density of iron if its relative density is 2 and
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Answer:

How the relative density of a substance is related to the density calculate the density of iron if its relative density is 2 and a density of water is 2gcm -3

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Explanation:

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