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Sladkaya [172]
3 years ago
7

What is question 15?

Chemistry
1 answer:
Marizza181 [45]3 years ago
3 0
D is the answer-15, 31, 15
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In which group do all atoms have seven valence electrons in the ground state?
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Hence they got seven electrons in ground state
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Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a given temperature. Such a solution is called saturated. Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to calculate the solubility in g/100g .

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4 0
3 years ago
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What rules should you follow when adding and subtracting? Check all that apply. 1. The exponents in scientific notation should b
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The answer to this question would be: 
<span>2. The exponents need to be the same so the leading numbers can be added or subtracted.
3. The result has the same number of decimal places as the least precise number.

</span>The exponent is the 10^x that used in scientific notation. .When adding 12.3* 10^5 with 34.56 * 10^4, you need to make the exponent same first. In this case, it would become 12.3* 10^5 + 3.456 * 10^5= 15.756* 10^5
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4 years ago
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C I belive

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