Answer:
6
Step-by-step explanation:
count your fingers
Answer:
Left side
Ca(OH)2 --> Ca + 2 O + 2 H
2 HBr --> 2 H + 2 Br
Together: Ca + 2 O + 4 H + 2 Br
You have only 1 Br and only 3 H. So you must correct this.
let's say is "x", so "x" is then 100% of the whole bill.
we know 15% is 22.05, what is "x"?
Scientifict notation is (number greater than or equal to 1 and less than 10) times 10^x
count where the decima place would make the number less than 10 and more than or equal to 1
7 places
so move the decimal place to the left 7 places and put that as the x
1.52 times 10^7 is the answer