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
lakkis [162]
3 years ago
15

A scientist has two kinds of solutions. The first solution is Solution A, which is an $80\%$ acid solution. The second solution

is Solution B, which is a $30\%$ acid solution. (a) Find the amount of Solution A (in mL) that must be added to $500$ mL of Solution B in order to produce a $70\%$ acid solution. (b) Find the amount of Solution A and Solution B (in mL) that can be combined in order to form a $100$ mL solution that is $50\%$ acid. (c) Does there exist a combination of Solution A and Solution B that is $90\%$ acid?
Mathematics
1 answer:
devlian [24]3 years ago
7 0

Answer:

Step-by-step explanation:

a ) Let the volume required be v .

v x .8 + 500 x .3 / ( v + 500 ) = .7

.8 v + 150 = .7 v + 350

.1 v = 200

v = 2000 mL

b )

Let the volume of solution A  required be v . The volume of solution of B required will be 100 - v

v x .8 + ( 100 - v ) x .3 / 100 = .5

.8 v + 30 - .3 v = 50

.5 v = 20

v = 40 mL

volume of solution B = 60 mL .

c )

It is not possible because 90 % is more than 80 % the concentration of solution A . Any mixture will have concentration less than 80 % .

volume of solution B = 60 mL

You might be interested in
How much greater is 0.0543 than 0.002?
aleksley [76]

Answer:

0.0523

Step-by-step explanation:

5 0
2 years ago
What comes after 7 1/4 on a number line
djverab [1.8K]
If you’re looking for the next whole number, the answer would be 8 if you’re looking for the next number in this phrase the answer would be 7 2/4
5 0
3 years ago
Read 2 more answers
PLEASE HELP ME please
Lena [83]

Answer:

(-1, 1/10) and (-2, 1/100)

I can't really explain because I just put it into my graphing calculator and clicked the trace button to find the y value at certain x values. A good website to do that on is Desmos

7 0
3 years ago
Reference attached image for the problem.Please show your work for finding the partial area.
-Dominant- [34]

To find the area of a sector of a circle use the next formula:

A=\frac{\theta}{360º}*\pi *r^2

As the given circle has a outside angle 90º (it is not part of the sector of the circle) subtract the 90º from 360º (total angle of a circle) to find the angle of the sector:

\theta=360º-90º=270º

Find the area of the sector with angle 270º:

\begin{gathered} A=\frac{270º}{360º}*3.14*(11in)\placeholder{⬚}^2 \\  \\ A=0.75*3.14*121in^2 \\  \\ A=284.955in^2 \end{gathered}Then, the approximate area of the given sector of a circle is 284.955 square inches
7 0
11 months ago
Grace, Chelsea, and Roan are simplifying the same polynomial expression. Which
Alexus [3.1K]

Answer:

Hey there!

3(2 - x) - 2(6x - 8)

6-3x-12x+16

6-15x+16

-15x+22

Hope this helps :)

6 0
3 years ago
Other questions:
  • Help me with #20, please
    9·2 answers
  • Mary wrote 4 integers. The sum of those integers is -22. The difference between the greatest and least integer is +50. What are
    6·1 answer
  • Consist of even number between 30 and 49
    14·1 answer
  • The cost, C (in dollars) to produce g gallons of a chemical can be expressed as C=f(g). Using units, explain the meaning of the
    15·1 answer
  • Hall travels 99 miles per hour for 6 hours. Find the distance traveled, in miles
    5·1 answer
  • Find the value of the expression 30 - 3^2, 3 + 8(2),
    6·1 answer
  • A ___ is a rule that assigns each value of the independent variable to exactly
    14·1 answer
  • Farhan bought one dozen bananas for $2.40. What is the rate ( cost ) of each banana?
    9·1 answer
  • 5/8 + 3/4 / -2/3- 5/6
    13·1 answer
  • the EM wave emitted by the sun and responsible for heating the Earths atmosphere due to green house effect is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!