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max2010maxim [7]
3 years ago
6

What is the charge of a boron ion with 5 protons and 7 electrons

Chemistry
2 answers:
zlopas [31]3 years ago
8 0
Negative, because electrons have a negative charge and there are more of them.
jolli1 [7]3 years ago
3 0
Protons are positively charge, and electrons are negative. Since there are 2 more electrons, then there is a negative 2 charge. (2-)
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Schach [20]

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7 0
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In the decomposition potassium nitride, 10.65 g of nitrogen form. How much potassium nitride was present initially ?
leonid [27]

Answer:

Mass =  99.8 g  

Explanation:

Given data:

Mass of potassium nitride = ?

Mass of nitrogen produced = 10.65 g

Solution:

Chemical equation:

2K₃N→ 6K + N₂

Moles of nitrogen:

Number of moles = mass/ molar mass

Number of moles =  10.65 g / 28 g/mol

Number of moles = 0.38 mol

Now we will compare the moles of nitrogen with potassium nitride.

                        N₂              ;         K₃N

                         1               :            2

                         0.38          :          2×0.38 =0.76

Mass of potassium nitride:

Mass = molar mass × number of moles

Mass =    131.3 g/mol ×   0.76 mol

Mass =  99.8 g    

7 0
3 years ago
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