Answer:
To count atoms in a molecule, add the subscripts of the molecule. Remember that if you do not see a subscript after a symbol, its subscript is 1. One molecule of water contains 3 atoms.
Step-by-step explanation:
The molecular formula for water is
H
2
O
, meaning there are 2 hydrogen atoms and one oxygen atom. I found this by adding the subscripts. 2 is the subscript on hydrogen, and 1 is the subscript on oxygen, so 2 + 1 = 3 atoms total.
For example, to count the number of atoms in one molecule of glucose,
C
6
H
12
O
6
, add the subscripts, so 6+12+6 is 24 atoms. Note that
C
6
H
12
O
6
is the molecular formula of glucose, not the empirical formula.
Answer:
p=x−7
Step-by-step explanation:
Let's solve for p.
px=x^2−7x
Step 1: Divide both sides by x.
px/x=x^2−7x/p
=x−7
Answer:
p=x−7
( I hope this was helpful) >;D
Answer:
Refer to the last line
Step-by-step explanation:
The total amount of money that Jenny and Susan spent is the sum of the money spent for the games and pizza. That is,
T = $93 + $6 = $99
We let x be the amount that Susan has. With this representation, the amount of money that Jenny has is x + 17. The equation that would represent this situation is,
x + 17 + x = 99
The value of x from the equation is 42.
ANSWER: $42.