Answer:
the narrator means that before the universe was out forward to completion,
there were little things that came together to form other things
a typical example can be found in the big bang theory
 
        
             
        
        
        
We know the formula of the density:
ρ =

 ;
So the mass will be equal to:
m = ρ * V = 2.70  * 21.3 = 57,51 g = 
57510 mg of substance.
So the answer is 57510.
 
        
        
        
Answer: 318 K
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,

where,
 = initial pressure of gas = 231 kPa
 = initial pressure of gas = 231 kPa
 = final pressure of gas = 168 kPa
 = final pressure of gas = 168 kPa
 = initial volume of gas = 3.25 L
 = initial volume of gas = 3.25 L
 = final volume of gas = 4.35 L
 = final volume of gas = 4.35 L
 = initial temperature of gas =
 = initial temperature of gas = 
 = final temperature of gas = ?
 = final temperature of gas = ?
Now put all the given values in the above equation, we get:


At 318 K of temperature will the same gas take up 4.35 liters of space and have a pressure of 168 kPa
 
        
             
        
        
        
In 1 molecule of the compound C₆H₁₂O₂ there are 12 moles of hydrogen atoms
<h3>Further explanation</h3>
Given
C₆H₁₂O₂ compound
Required
moles of Hydrogen
Solution
In a compound, there is a mole ratio of the constituent elements.
The empirical formula is the smallest comparison of atoms of compound forming elements.  
A molecular formula is a formula that shows the number of atomic elements that make up a compound.  
In the C₆H₁₂O₂ compound, there are 3 forming elements: C, H and O
The number of each element is indicated by its subscript
C: 6 moles
H = 12 moles
O = 2 moles