Can someone plss help me asap !!

Chemistry

1 answer:

ludmilkaskok [199]3 years ago

6 0

I think the answer is barium

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What is true about solubility

LekaFEV [45]

Explanation:

Solubility is defined as a property of solutes by virtue of which they get dissolved in a favorable solvent. The solute can only be dissolved in any suitable solvent up to a limit at a given temperature. This is a characteristic of the the solute-solvent pairing.

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Troyanec [42]

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3 years ago

Number of atoms in calcium carbonate

lakkis [162]

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Inessa [10]

Answer:

friction

Explanation:

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The answer to the problem: (2.1x103) x (4x105) = _____, written to the correct number of significant digits and in scientific no

Mariulka [41]

Answer: The answer is $8.4\times 10^8$

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

The rule apply for the multiplication and division is :

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

Thus for product of $(2.1\times 10^3)\times (4\times 10^5)$

In this problem, 2.1has 2 significant figures and 4 is an exact number with infinite significant digits thus product will have the least number of significant figures which is 2. So, the answer will be in 2 significant figures.

Therefore, the answer is $8.4\times 10^8$

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