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Sergeu [11.5K]
2 years ago
15

Which chemical element was discovered first microsoft rewards.

Chemistry
1 answer:
djverab [1.8K]2 years ago
5 0

Answer:

phosphorous

Explanation:

A necessary prerequisite to the construction of the periodic table was the discovery of the individual elements. Although elements such as gold, silver, tin, copper, lead and mercury have been known since antiquity, the first scientific discovery of an element occurred in 1649 when Hennig Brand discovered phosphorous.

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a

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Explanation:

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If nitrogen and hydrogen combine in a combustion reaction, what would the product of the reaction be?
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Co2

Explanation:

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Thyroid hormone contains the mineral thyroid hormone contains the ________.
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Thyroid hormone contains the mineral iodine (option I). Details about thyroid hormone can be found below.

<h3>What is the thyroid hormone?</h3>

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8 0
2 years ago
You have 2.7 moles of carbon. How many atoms do you have?
Gelneren [198K]

Answer:

1.63 × 10²⁴ atoms.

Explanation:

To calculate the number of atoms (N) contained in 2.7moles of carbon, we multiply the number of moles (n) by Avogadro's number (6.02 × 10²³).

That is, N = n × nA

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N = number of atoms

n = number of moles (mol)

nA = Avogadro's numbe

N = 2.7 × 6.02 × 10²³

N = 16.254 × 10²³

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Hence, there are 1.63 × 10²⁴ atoms in 2.7moles of Carbon.

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