Answer:
you can divide the answers by the time duration of the exam and get your answer
Step-by-step explanation:
Answer:
The no. of subscribers of the magazine after 5 years is = 55713
Step-by-step explanation:
Given data
Total subscribers (N) = 72000
Drop in subscriptions in each year (R) = 5%
No. of subscribers of the magazine in 5 years is given by
= 55713
Thus the no. of subscribers of the magazine after 5 years is = 55713
Answer:
2 CH4(g) + 4 O2(g) --> 2 CO2 (g)+ 4 H2O(g)
Step-by-step explanation:
The number are subscripts.
Now count the number of each kind of atom on the left and right side of the equation. Note, you have 4 H on the left and as written you have only 2 on the right. So add a coefficient-- a number in front of the formula.
CH4 +O2 ----- CO2 + 2 H2O
With the added coefficient in front of water, the number of hydrogens balance but the number of oxygens do not. There are only 2 oxygens on the left and a total of 4 oxygens on the right. A coefficient of 2 in front of oxygen on the left balances the equation.
Answer: 18
Step-by-step explanation:
The detailed explanation is in the attached picture.
I believe the answer is b.
