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abruzzese [7]
3 years ago
14

i really need help, this is important to me, if not i get my harry styles tickets taken away and if that happens my life is over

lol, i’m not saying it for sympathy i just REALLY need help

Chemistry
1 answer:
Mazyrski [523]3 years ago
4 0

Explanation:

First Question

Group 18 elements. This is because the noble elements do not conduct electricity.

Second Question

Chewing in the mouth breaks food into small pieces

Third Question

How many atoms of each element are present in the molecule?

7 carbon atoms, 14 Hydrogen atoms and 1 oxygen atom

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Calculate the mass of 0.00456 moles of (NH4)2SO4
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To find the mass you need to find the weight of a mol of the molecules by adding up the atomic mass.

N =  14.007 g/mol
H = 1.008 g/mol
S = 32.065 g/mol
O = 16 g/mol

2(14.007) + 8(1.008) + 32.065 + 4(16) = 132.143 g/mol

Now you know how much an entire mol weight you multiply it by how much you actually have 

0.00456 * 132.143 = 0.603 g
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Answer:

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How does an atom of one element differ from the atom of another element?
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Explanation:

The atoms of one element differs from the atoms of other elements in terms of the number of protons they contain. This is often taken as the atomic number of such an atom.

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II.

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Only nuclear reactions have this capability.

When an atom undergoes nuclear reaction that involves change in number of protons, transmutation occurs and a new atom forms.

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<em>Answer:</em>

4) the one that is reduced, which is the oxidizing agent

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