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Roman55 [17]
3 years ago
7

Examples of elements​

Chemistry
1 answer:
DedPeter [7]3 years ago
5 0
Oxygen, carbon, hydrogen, nitrogen, aluminum
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Predict the products for the following equation.
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Answer: AgCl + Fe

Explanation:

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A general single displacement reaction can be represented as :

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Which ion in the ground state has the same electron configuration as an atom of
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Ca^+2

Explanation:

Hence, the correct option is A.

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3 years ago
In one sample of a compound of copper and oxygen, 3.12g of the compound contains 2.50g of copper and the remainder is oxygen. Ca
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Answer:

% composition O = 19.9%

% composition Cu = 80.1%

Explanation:

Given data:

Total mass of compound = 3.12 g

Mass of copper = 2.50 g

Mass of oxygen = 3.12 - 2.50 = 0.62 g

% composition = ?

Solution:

Formula:

<em>% composition = ( mass of element/ total mass)×100</em>

% composition Cu = (2.50 g / 3.12 g)×100

% composition Cu = 0.80 ×100

% composition Cu = 80.1%

For oxygen:

<em>% composition = ( mass of element/ total mass)×100</em>

% composition O = (0.62 g / 3.12 g)×100

% composition O = 0.199 ×100

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3 years ago
What is a nuclear acid ​
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A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.

8 0
3 years ago
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