Answer:
I think its D
Explanation:
It cant be B or C bc the solute particles arent changing. And its not A because the concentration isnt constant
The mass of He gas = 21.428 g
<h3>Further explanation</h3>
Given
120 liters of He gas
Required
the mass in grams
Solution
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.
Mol for 120 L :

Mass of He gas(MW=4 g/mol) :

Answer:
24.3
Explanation:
I used a calculator and did 3x3x3=27 27x0.90=24.3
Answer:
100%
Explanation:
Cell is the structural and functional unit of life. Without Cell, an organism can never be created.
I believe the answer is option D !!