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o-na [289]
3 years ago
12

List the number of

Chemistry
1 answer:
rjkz [21]3 years ago
6 0

Answer:

beryllium: 2 valence electrons

nitrogen: 5  valence electrons

oxygen: 6 valence electrons

fluorine: 7  valence electrons

magnesium: 2+ valence electrons

phosphorus: 5 valence electrons

sulfur: 6 valence electrons

chlorine: 7  valence electrons

Explanation:

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Simplify - Factor a
Dmitriy789 [7]

Answer:

Option 1

Explanation:

Option number 1 is the most compact one which indicates it is a solid

7 0
3 years ago
10.
Andru [333]

Answer: 1.8 moles Fe and 2.7 moles CO_2 are produced.

Explanation:

The balanced chemical reaction is:

Fe_2O_3+3CO\rightarrow 2Fe+3CO_2  

According to stoichiometry :

3 moles of CO require 1 mole of Fe_2O_3

Thus 2.7 moles of CO will require=\frac{1}{3}\times 2.7=0.9moles  of Fe_2O_3

Thus CO is the limiting reagent as it limits the formation of product and Fe_2O_3 is the excess reagent.

As 3 moles of CO give = 2 moles of Fe  and 3 moles of CO_2

Thus 2.7 moles of CO will give =\frac{2}{3}\times 2.7=1.8moles  of Fe  and \frac{3}{3}\times 2.7=2.7moles  of CO_2

Thus 1.8 moles Fe and 2.7 moles CO_2 are produced.

7 0
3 years ago
Picture a neutral S atom. This neutral atom will have
ser-zykov [4K]

Answer:

it will have 6 valence electrons

it will gain electrons

charge will be 2-

4 0
3 years ago
This graph shows the solution to the inequality y > 3x + 14 and y < 3x + 2
erik [133]

For apex the answer is no solution

7 0
3 years ago
How many photons of light are emitted when the electrons in 10 hydrogen atoms drop from energy level 5 to 3?
nata0808 [166]
The Answer is 10 it a little difficult to explain but I’ll try my best
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