<span>50 quarts of 60% solution and 50 quarts of 40% solution.
You want a total of 100 quarts, so we'll use the following expressions
x = amount of 60% solution
(100 - x) = amount of 40% solution.
The total amount of alcohol will be
0.6x + 0.4(100-x)
We want the final result to be 100 quarts of 50% solution, so we express that as
0.5 * 100
Now we set them equal to each other, and solve for x
0.6x + 0.4(100-x) = 0.5 * 100
Distribute the .4
0.6x + 0.4*100 - 0.4x = 0.5 * 100
0.6x + 40 - 0.4x = 50
Subtract 40 from both sides and combine the x terms
0.2x = 10
Divide both sides by 0.2
x = 50
Now we know we need 50 quarts of the 60% solution. And we need (100 - 50) = 50 quarts of the 40% solution as well.</span>
Answer:
kilopascal, torr, and atmosphere
Explanation:
Answer:
16.25 x 10^-20g
Explanation:
molar mass of PCl3
31(1)+3(35.5) = 137.5
n= mass/molar mass
7.14 x 10² = mass / 137.5
mass = 7.14 x 10² x 137.5
mass = 98175g
Change of appearance, change in size and shape of a substance, change in phase of a substance, and I'm pretty sure expansion/contraction is an answer, too.
Answer:
3 molecule of CO2 = 18069 * 10^20
half the answer to geet the .5
Explanation: