Answer:
The answer is 18
Step-by-step explanation:
<h3><u>Given</u>;</h3>
A car uses 30 gallons of gasoline for a trip of 750 miles.
<h3><u>To </u><u>Find</u>;</h3>
Gallons would be used on a trip of 450 miles.
Now, Gasoline used for one mile
30 ÷ 750 = 0.04
So,
0.04 × 450 = 18
Thus, 18 gallons would be used on a trip of 450 miles.
<u>-</u><u>TheUnknownScientist</u><u> 72</u>
Answer:
x=10
Step-by-step explanation:
16+2x=36
subtract 16 from both sides
2x=20
divide 2 from both sides
x=10
Answer:
4y+3x+17
Step-by-step explanation:
take the similar numbers and add them together.
1. -2y+6y = 4y
2. 5x-2x = 3x
3. 8+9 = 17
Put the numbers back together into the new and simplified equation: 4y + 3x + 17
To solve this problem, we have to apply mole-concept to this and we would need the molar mass of AlCl3. 2g of AlCl3 contains 9.034*10^21 molecules.
<h3>Number of Molecules in 2g of AlCl3</h3>
The molar mass of AlCl3 is given as 133.34g/mol
Data;
- mass = 2g
- molar mass = 133.34g/mol
Using the mole concept, we can equate the molar mass to the number of molecules present in the entity.

If we equate this

From the calculations above, 2g of AlCl3 contains 9.034*10^21 molecules.
Learn more on mole concept here;
brainly.com/question/21150359
#SPJ1