the answer is c. Gas molecules will never collide with the walls of the container
Answer:
B
Explanation:
The warmer the water, the more space it takes up, and the lower its density.
Answer:

Explanation:
The formula for tin(IV) sulfide is SnS
It's 1 because there is only one electron on the outer shell.
Given :
A 250 ml beaker weighs 13.473 g .
The same beaker plus 2.2 ml of water weighs 15.346 g.
To Find :
How much does the 2.2 ml of water, alone, weigh .
Solution :
Now, mass of water is given by :

Therefore , mass of 2.2 ml of water alone is 1.873 g .
Hence , this is the required solution .