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olga nikolaevna [1]
3 years ago
14

What is something that only a college can offer? Don't need any lame and commonly used answers like meeting new people, experts,

opportunities, learning, and other BS that is expected.
Something you can't get anywhere, regardless of how much money you have.
Educational Purpose only
Mathematics
1 answer:
alukav5142 [94]3 years ago
6 0

Nothing other than those

Step-by-step explanation:

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300 ml of pure alcohol is poured from a bottle containing 2 l of pure alcohol. Then, 300 ml of water is added into the bottle. A
Ede4ka [16]

Answer:

The present percentage of pure alcohol in the solution is 72.25% of pure alcohol

Step-by-step explanation:

The volume of pure alcohol poured from the 2 l bottle of pure alcohol = 300 ml of pure alcohol

The volume of water added into the bottle after pouring out the pure alcohol = 300 ml of water

The volume of diluted alcohol poured out of the bottle = 300 ml of diluted alcohol

The volume of water added into the bottle of diluted alcohol after pouring out the 300 ml of diluted alcohol = 300 ml of water

Step 1

After pouring the 300 ml of pure alcohol and adding 300 ml of water to the bottle, the percentage concentration, C%₁ is given as follows;

C%₁ = (Volume of pure alcohol)/(Total volume of the solution) × 100

The volume of pure alcohol in the bottle = 2 l - 300 ml = 1,700 ml

The total volume of the solution = The volume of pure alcohol in the bottle +  The volume of water added = 1,700 ml + 300 ml = 2,000 ml = 2 l

∴ C%₁ = (1,700 ml)/(2,000 ml) × 100 = 85% percent alcohol

Step 2

After pouring out 300 ml diluted alcohol from the 2,000 ml, 85% alcohol and adding 300 ml of water, we have;

Volume of 85% alcohol = 2,000 ml - 300 ml = 1,700 ml

The volume of pure alcohol in the 1,700 ml, 85% diluted alcohol = 85/100 × 1,700 = 1,445 ml

The total volume of the diluted solution = The volume of the 85% alcohol in the solution + The volume of water added

∴ The total volume of the twice diluted solution = 1,700 ml + 300 ml = 2,000 ml

The present percentage of pure alcohol in the solution, C%₂ = (The volume of pure alcohol in the 1,700 ml, 85% diluted alcohol)/(The total volume of the diluted solution) × 100

∴ C%₂ = (1,445 ml)/(2,000 ml) × 100 = 72.25 %

The present percentage of pure alcohol in the solution, C%₂ = 72.25%

3 0
3 years ago
Select the graph of the solution. Click until the correct graph appears. 4x - 1 < 7
GaryK [48]
This graph shows the solution on a Cartesian plane.

Likely your graph is a solution on a number line. It will have an open circle at x=2, and an arrow pointing to the left from that point.

4 0
3 years ago
Evaluate the expression (8.1 +7.9)x-(25/5)x
lbvjy [14]
Evaluate the expression below
(8.1 + 7.9)x – (25 ÷ 5)
5 0
2 years ago
Read 2 more answers
Suppose a karate membership cost $45 a month additionally,there is a uniform cost of $55,which equation models cost c of karate
mr Goodwill [35]

Answer:

c = 45m + 55

or

c = $45m + $55

Step-by-step explanation:

Given;

Karate membership cost per month = $45 per month

Uniform cost = $55

Total cost c = membership cost + uniform cost

Membership cost in m months = $45 × m = 45m

Since uniform cost is once and is = $55

Total cost c can then be written as;

c = 45m + 55

or

c = $45m + $55

. where m is the number of months.

8 0
3 years ago
17. Michelle spent $32 on hot dogs and hamburgers. Hot dogs were $5 and hamburgers $6. If she bought a total of 6 items, how man
Yakvenalex [24]
I am not sure if this is the only answer but i used trial and error to work this out.
I first calculated 6x 4= 24, meaning 4 hamburger. But that one left me with $8 left which would not work as each hot dog is $5 each. So the answer i got was:
4 hot dogs at $5 equals $20.  2 hamburgers equals $12. so all together, 20 plus 12= $32.  
7 0
3 years ago
Read 2 more answers
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