Answer:
It could be B or C eighter one
10^8 just makes it easier to write out big numbers. It makes it so you don't have to keep writing out the really long number over and over.
If you were wondering.
3.0 * 10^8=300,000,000.0
The coefficient of Oxygen in the balanced reaction : 3
<h3>Further explanation</h3>
Given
Reaction(unbalanced)
C2H4+ O2--> CO2+H2O
Required
The coefficient of Oxygen
Solution
C₂H₄+ aO₂⇒ bCO₂+cH₂O
C, left=2, right=b⇒b=2
H, left=4, right=2c⇒2c=4⇒c=2
O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.2+2⇒2a=6⇒a=3
The equation becomes :
<em>C₂H₄+ 3O₂⇒ 2CO₂+2H₂O</em>
In the atom model, the poppy seeds are placed in different places to represent the different position of electrons.
Answer:
The answer is "
".
Explanation:
Please finds the complete question in the attached file.
![Volume = 10.0 \ mL \\\\Density =0.79 g\ cm^3](https://tex.z-dn.net/?f=Volume%20%3D%2010.0%20%5C%20mL%20%5C%5C%5C%5CDensity%20%3D0.79%20g%5C%20%20cm%5E3)
![\text{Density}=\frac{Mass}{Volume}](https://tex.z-dn.net/?f=%5Ctext%7BDensity%7D%3D%5Cfrac%7BMass%7D%7BVolume%7D)
The mass of acetone to be weighed is ![7.90 \ g](https://tex.z-dn.net/?f=7.90%20%5C%20g)