1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ira Lisetskai [31]
3 years ago
11

A chemist needs to obtain a 75% acid solution. How many Ounces of a 20% acid solution must be mixed with 20 ouncesof an 90% acid

solution to obtain
a 75% acid solution? (round to the nearest hundredth if necessary)
Mathematics
1 answer:
Tju [1.3M]3 years ago
8 0

Answer: 5.4545 ounces

Step-by-step explanation:

Given the following :

Acid solution required = 75% acid solution

Let the number of ounces of 20% acid solution required = s

Then total ounces acid required can be expressed as :

=0.20s + 0.90 x 20

= 0.20s + 18

While the total ounces required is :

s + 20

Hence, (total ounces of acid / total ounces) = 75% acid solution

= (0.2 + 18) / (s + 20) = 0.75

= 0.2s + 18 = 0.75( s + 20)

0.2s + 18 = 0.75s + 15

18 - 15 = 0.75s - 0.2s

0.55s = 3

S = 3 / 0.55

= 5.4545 ounces

You might be interested in
Which equation represents the proportional relationship in the table?
Murrr4er [49]
C=3r or r=3c hope it helps
6 0
3 years ago
Read 2 more answers
Can someone help me with this plz so i could get it over with thanks brainliest for first person and correct answer
insens350 [35]
The rate of change for function A is 2. It would originally be 2 over one but you can just simplify it down to 2. The rate of change for function B is 3. Which would also originally be 3 over 1.
6 0
3 years ago
Use the net to find the surface area of the regular pyramid.<br><br> plz, help I'm stuck.
Zepler [3.9K]

Answer:

178.3 mm²

Step-by-step explanation:

Surface area = Base area + 3 x side triangles area

Sₐ = 43.3 + 3 x (1/2 x (10 x 9)) = 43.3 + (3 x 45) = 178.3

5 0
3 years ago
What are 5 different equation that have x=5 as a solution.
777dan777 [17]
X+6=11
X-11=-6
5x=25
2x=10
2x+15=25

5 0
3 years ago
What is 1/6 x 5 appreciate all answers!
Alchen [17]

Answer:

0.833 repeating or 5/6

Step-by-step explanation:

I just searched it online it that's all

4 0
3 years ago
Read 2 more answers
Other questions:
  • If you are using this figure to prove the isosceles triangle theorem which of the following would be the best strategy
    12·1 answer
  • What is a flat plane postulate?
    6·1 answer
  • 1. = 6 × 573 = 6 × (_____ + 70 + _____) = (_____ × ____) +(6×70) +(____×_____) =_______+420+___ =________ I will give you 11 poi
    8·1 answer
  • A rectangle with an area of 47 m² is dilated by a factor of 7. What is the area of the dilated rectangle?
    8·1 answer
  • My equasion is -0.84 divided by -2.8 how do i divide that?
    9·2 answers
  • How can -6 1/3 be expressed as the sum of it's integer and fractional parts?
    14·2 answers
  • Not sure how I would go about solving this problem. Any help would be appreciated
    9·1 answer
  • Are these shapes congruent??
    11·2 answers
  • 8.
    11·2 answers
  • Ma Johnson gives 1/6 of 1 pizza to each of her 25 students
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!