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Basile [38]
3 years ago
8

How many neutrons are present in 1 atom of chlorine?

Chemistry
2 answers:
pav-90 [236]3 years ago
4 0
The answer is A.18 let me know if you want an explanation
ValentinkaMS [17]3 years ago
4 0

Answer:

18

Explanation:

17 protons + 18 neutrons = 35

17 protons + 20 neutrons = 37 particles in the nucleus

Hope this is right

Hope this helps

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Suppose now that you wanted to determine the density of a small crystal to confirm that it is graphite. From the literature, you
kirza4 [7]

Answer:

The volume of first and second compound are 9.15 ml and 10.85 ml.

Explanation:

Given that,

Density of graphite = 2.25 g/cm³

Volume of mixture = 20.0 mL

Density of first compound = 1.492 g/ml

Density of second compound = 2.890 g/ml

Let the volume of first mixture = x

The volume of second mixture = (20-x)....(I)

We need to calculate the volume of first compound

Using formula of  density of mixture

\rho=\dfrac{V_{1}\rho_{1}+V_{2}\rho_{2}}{V_{1}+V_{2}}

Where, V_{1} = volume of first compound

V_{2} = volume of second compound

\rho_{1} =density of first compound

\rho_{1} = density of first compound

Put the volume into the formula

2.25=\dfrac{x\times1.492+(20-x)\times2.890}{x+20-x}

45=1.492x+57.8-2.890x

45-57.8=1.492x-2.890x

12.8=1.398x

x=\dfrac{12.8}{1.398}

x=9.15\ ml

We need to calculate the volume of second compound

Using equation (I)

V_{2}=20-x

Put the value of x

V_{2}=20-9.15

V_{2}=10.85\ ml

Hence, The volume of first and second compound are 9.15 ml and 10.85 ml.

5 0
3 years ago
When swimmers push against the wall of a pool with their feet, they are pushed away from the wall. Which of Newton's laws explai
Alecsey [184]

It would be his third law

8 0
3 years ago
Draw and name the structures of the carboxylic acids and esters you put together using molecular models.
Neporo4naja [7]

Answer:

This question is incomplete

Explanation:

However, when the carboxylic acids and esters put together are obtained, the procedure below can be followed in drawing and naming them.

For carboxylic acid,

1) it should be noted that the functional group here is -COOH which is drawn as -C = OH

      |

     OH

2) The carbon of the functional group is included among the carbon to be counted when naming the structure. For example, the compound below is propanoic acid.

CH₃CH₂COOH - As you can see that there are 3 carbons linked chain there.

3) As can be seen in (2) above, the suffix "oic" is used to name carboxylic acids

4) The carbon chain here is saturated (meaning there is no double or triple bond within the carbon chain)

Example of a structure of carboxylic acid is

H₃C - CH₂ - CH₂ - C = OH

                              |

                             OH

The structure above is a butanoic acid

For ester

1)The functional group here is -COO- . which can be drawn as

- C = O

   |

  O -

(meaning one oxygen atom is double bonded to the carbon and the other oxygen atom is bonded to another carbon chain)

2) The alkyl group attached to the oxygen atom is first of all mentioned before the carbon chain attached from the left is mentioned. For example, CH₃CH₂CH₂COOCH₂CH₃ is ethyl butanoate

3) As seen from (2) above, the suffix "oate" is used to end the name of esters

4) As also seen from (2) above, the carbon of the functional group is also included while counting the carbon chain of the parent name (butanoate).

5) The carbon chains here are also saturated.

Example of this ester is

CH₃CH₂C = O

              |

             O - CH₂CH₃

The name of this compound is ethyl propanoate

3 0
3 years ago
What is the approximate total number of atoms in 1.0 mole of lithium?
chubhunter [2.5K]

Answer:

6.0 x 10 to the power of 23

6 0
3 years ago
What are the things to consider in classifying the different kinds of mixture?
algol13

Answer:

Whether the mixture can be separated

4 0
4 years ago
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