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
8_murik_8 [283]
3 years ago
6

A scientist need 10 L of a 20% acid solution for an experiment where she had only a 5% solution and a 40% solution to the neares

t 10th of a liter about how many liters of the 5% in the 40% solution should she miss to get the solution she needs
Mathematics
1 answer:
andrezito [222]3 years ago
4 0

Answer:

Amount of 5% solution = 5.7 Litres

Amount of 40% solution = 4.3 Litres

Step-by-step explanation:

First, of all, let x be the amount of 5% solution used

Since, the scientist needs 10 L of solution, then;

Let 10 - x be the amount of 40% solution used

Now, we are told that she needs 10 L of a 20% acid solution.

This means that;

5%x + 40%(10 - x) = 20%(10).

Simplifying this gives;

0.05x + 0.40(10 - x) = 0.20 × 10

Expanding the bracket gives;

0.05x + 4 - 0.4x = 2

0.4x - 0.05x = 4 - 2

0.35x = 2

x = 2/0.35

x ≈ 5.7 litres

Thus, she will need to mix 5.7 liters of the 5% solution.

Since 10 - x be the amount of 40% solution used , then;

the amount of 40% solution = 10 - 5.7 = 4.3 litres

You might be interested in
How do you write o.1111111111 as a fraction?
Bezzdna [24]

Answer:

1/10th

Step-by-step explanation:

6 0
2 years ago
A circle of centre M has a radius of 11CM . if CA=16.3cm ,what is AB ? give your answer to the nearest tenth!​
zhenek [66]

Answer:

16.4

Step-by-step explanation:

If it is asking for the tenth it will be the 1st one after the point and you round it to the next one.

6 0
3 years ago
A football team has $3,744 to spend on hats for their fans. Each hat costs $8. How many hats can the team buy?
miskamm [114]

Answer:

468

Step-by-step explanation:

3,744/8=468

3 0
3 years ago
Read 2 more answers
What is the elevation of a city 45 feet below sea level?
Andrei [34K]

Answer:

The elevation would be -45 feet

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Simplify the expression: 4(x + 3) + 3(5 – x) A X + 27 B X + 8 C 2x + 15 D. 19x + 11​
Jobisdone [24]

Answer:

A

Step-by-step explanation:

4(x+3)+3(5-x)

=4x+12+15-3x

=x+27

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the ratio of 5-10-15
    10·1 answer
  • When two lines crosses, it is found that the angle opposite each other are thesame sizes. They are known as what
    11·1 answer
  • Which are correct representations of the inequality 6x2 3 + 4(2x - 1)?
    14·1 answer
  • Find the coordinates of the vertices of the figure after a rotation of 180°.
    13·1 answer
  • There are 200 marbles in the bag. John picks 10 marbles out of
    6·1 answer
  • Of the flags in Albert's Flag Shop, 1/10 are pink and another 1/2 are orange. What fraction of the flags are either pink or oran
    7·1 answer
  • Solve for x.<br> 47 =X/11+43
    10·2 answers
  • Which ordered pairs are in the solution set of the system of linear inequalities?
    11·1 answer
  • Someone help meee?<br> This is soo hard
    12·1 answer
  • Given the polynomial 2x3 18x2 − 18x − 162, what is the value of the constant 'k' in the factored form? 2x3 18x2 − 18x − 162 = 2(
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!