There is 33 students in the class
Answer:
-2*(6y-3x+9)
Step-by-step explanation:

As we know,

So, we can infer that :

Now, let's calculate the mass of gases in each case :
<h3>Case A : Hydrogen ~</h3>



or

<h3>Case B : Helium ~ </h3>



or

<h3>Case C : Nitrogen ~ </h3>



or

So, the arrangement of masses from least to greatest is :
- (1.) Hydrogen < (2.) Helium < (3.) Nitrogen
Answer:
5 is before the decimal so its value will be
<h2>0.05=5/100</h2>
The answer is 48 units squared