Mass number = number of neutrons + number of protons
In a periodic table, or other tables, you find that the atomic number of sulfur is 16. That means it has 16 protons.
Then the number of neutrons = 34 - 16 = 18.
<span>Given the same conditions of temperature and pressure the noble gas He will diffuse most rapidly. </span>He is the smallest noble gas and so it can diffuse (pass through) membranes the easiest.It is colorless, odorless, tasteless, non-toxic chemical element.
Correct answer:A
Answer:
![N_2~+~3H_2~+~4O_2~->~2HNO_3~+~2H_2O](https://tex.z-dn.net/?f=N_2~%2B~3H_2~%2B~4O_2~-%3E~2HNO_3~%2B~2H_2O)
Explanation:
We can start with the <u>reaction of hydrogen and nitrogen to produce ammonia</u>, so:
![N_2~+~H_2~->~NH_3](https://tex.z-dn.net/?f=N_2~%2B~H_2~-%3E~NH_3)
When we <u>balance</u> the reaction we will obtain:
![N_2~+~3H_2~->~2NH_3](https://tex.z-dn.net/?f=N_2~%2B~3H_2~-%3E~2NH_3)
Now, the <u>production of nitric acid</u> with oxygen would be:
![NH_3~+~O_2~->~HNO_3~+~H_2O](https://tex.z-dn.net/?f=NH_3~%2B~O_2~-%3E~HNO_3~%2B~H_2O)
If we <u>balance</u> the reaction we will obtain:
![NH_3~+~2O_2~->~HNO_3~+~H_2O](https://tex.z-dn.net/?f=NH_3~%2B~2O_2~-%3E~HNO_3~%2B~H_2O)
Now, if we put the reactions together we will obtain:
![N_2~+~3H_2~->~2NH_3](https://tex.z-dn.net/?f=N_2~%2B~3H_2~-%3E~2NH_3)
![NH_3~+~2O_2~->~HNO_3~+~H_2O](https://tex.z-dn.net/?f=NH_3~%2B~2O_2~-%3E~HNO_3~%2B~H_2O)
We can <u>multiply</u> the second reaction by "2":
![N_2~+~3H_2~->~2NH_3](https://tex.z-dn.net/?f=N_2~%2B~3H_2~-%3E~2NH_3)
![2NH_3~+~4O_2~->~2HNO_3~+~2H_2O](https://tex.z-dn.net/?f=2NH_3~%2B~4O_2~-%3E~2HNO_3~%2B~2H_2O)
We have "
" on <u>both sides</u>. In the first reaction is in the right in the second reaction is on the left. Therefore we can <u>cancel out</u> this compound and we will obtain:
![N_2~+~3H_2~+~4O_2~->~2HNO_3~+~2H_2O](https://tex.z-dn.net/?f=N_2~%2B~3H_2~%2B~4O_2~-%3E~2HNO_3~%2B~2H_2O)
On this reaction, we will have 2 nitrogen atoms on both sides, 6 hydrogen atoms on both sides, and 8 oxygen atoms on both sides. So, this would be the <u>net reaction</u> for the production of nitric acid.
Answer:
the answer is 20000.3&$&$_$