<u>Answer:</u> The molarity of saline solution is 0.909 M
<u>Explanation:</u>
We are given:
5.21 w/w % NaCl
This means that 5.21 grams of NaCl is present in 100 grams of solution
To calculate mass of a substance, we use the equation:

Density of solution = 1.02 g/mL
Mass of solution = 100 g
Putting values in above equation, we get:

To calculate the moalrity of solution, we use the equation:

Given mass of NaCl = 5.21 g
Molar mass of NaCl = 58.44 g/mol
Volume of solution = 98.04 mL
Putting values in above equation, we get:

Hence, the molarity of saline solution is 0.909 M
Answer. Answer: Scientists study how things work, while engineers create new things
1.01 g/ml
<em>Hope this helps</em><em> </em><em>:</em><em>)</em>
Answer:
It's a solid.
Explanation:
Solids never change their shape as opposed to gases and liquids. This is because their molecules are tightly packed together. Since all solids have a definite shape, it's volume will also be definite.
Answer:
Yes
Explanation:
The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later. In between these, Spring and Autumn will occur. The North pole always points the same way as the Earth revolves around the Sun.