Answer:
8
Step-by-step explanation:
2g = 3 + 13
2g = 16
g = 16/2
g = 8
Answer: yes
Step-by-step explanation:
They run side by side together
Answer:

Step-by-step explanation:
In 5 liters, there is 4% salt.
Lets find liters of salt.
First, converting 4% to decimal (dividing by 100):
4% = 4/100 = 0.04
0.04 * 5 = 0.2
So, there is 0.2 liters of salt.
Now, x liters of water is added to total, so total is now:
5 + x
The concentration of salt will be amount of salt divided by amount of salt water solution.
Amount of salt = 0.2 (as seen above)
Amount of new salt water solution = x + 5
So,
Concentration of salt in new solution is 
2nd choice is right.
You can't at standard temperature and pressure. Minimum temperature needed is about 130 F and it would take about 20 minutes at that.