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irina [24]
4 years ago
15

Balance the following chemical equations.

Chemistry
1 answer:
solong [7]4 years ago
3 0

Answer:

1) 2,1,2

2) 2,2,1,1

3)2,1,2

4)2,2,3

5)2,3,1,3

6 [ I cannot answer that]

7)6,1,2

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Which electrons are the valence electrons in a neutral atom of fluorine (F)? Write the orbital configuration of just the valence
ICE Princess25 [194]

Answer:

2s² 2p⁵

There are seven valance electrons in fluorine.

Explanation:

The elements of group 17 are called halogens. These are six elements Fluorine, Chlorine, Bromine, Iodine, Astatine. Halogens are very reactive these elements can not be found free in nature. Their chemical properties are resemble greatly with each other.

Properties of fluorine:

1. it is yellow in color.

2. it is flammable gas.

3. it is highly corrosive.

4. fluorine has pungent smell.

5. its reactions with all other elements are very vigorous except neon, oxygen, krypton and helium.  

Electronic configuration of fluorine:

F₉ = 1s² 2s² 2p⁵

Valance electrons in fluorine are 2s² 2p⁵.

Valance Orbital configuration:

2s² 2p⁵

There are seven valance electrons in fluorine.

4 0
3 years ago
the chemical compound C2F4 is used to make PTEE (Teflon). How manyC2F4 molecules are in 485 kilograms of this material?
monitta

Answer:

molecules=2.92x10^{27}moleculesC_2F_4

Explanation:

Hello,

In this case, we use the Avogadro's number to compute the molecules of C2F4 whose molar mass is 100 g/mol contained in a 485-kg sample as shown below:

molecules=485kgC_2F_4*\frac{1000gC_2F_4}{1kgC_2F_4} *\frac{1molC_2F_4}{100gC_2F_4}*\frac{6.022x10^{23}molecules C_2F_4}{1molC_2F_4}  \\\\molecules=2.92x10^{27}moleculesC_2F_4

Best regards,

5 0
4 years ago
How many silver (Ag) atoms are in 3.0 moles of silver?
o-na [289]

Answer:

1.8 x 10²⁴ atoms Ag

Explanation:

You can find the amount of silver (Ag) atoms by multiplying the moles by Avogadro's number. It is important to arrange the conversion in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 2 sig figs to match the sig figs of the given value.

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

3.0 moles Ag           6.022 x 10²³ atoms
----------------------  x  --------------------------------  = 1.8 x 10²⁴ atoms Ag
                                           1 mole

8 0
2 years ago
Read 2 more answers
Which one is correct?​ sorry it's biology Question
erica [24]

Answer:

nucleotide is ATG

Explanation:

since it is DNA

8 0
3 years ago
Read 2 more answers
enny places a strip of pH paper into a solution. When she removes the pH paper, it has turned yellow-green. What should Jenny do
Svetllana [295]
Compare it to the chart showing how base or acidic a substance is
8 0
4 years ago
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