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
iragen [17]
3 years ago
9

To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?

Mathematics
1 answer:
yan [13]3 years ago
7 0

Answer:

24 ounces

Step-by-step explanation:

Here's a more intuitive approach to use here.

You know that your initial solution has a percent concentration, presumably volume by volume, of  

25

%

. This means that any volume of this solution contains  

1

part solute and  

3

parts solvent.

The target solution must have a concentration of  

10

%

, which means that any volume of this solution will contain  

1

part of solute and  

9

parts solvent.

Your starting solution has a volume of  

16

ounces, or  

4

parts, each with a volume of  

4

ounces.

In order to get to a solution that has a total of  

10

parts, you must add  

6

parts of solvent to the initial solution. Since we know that

1 part  

=

4 ounces

it follows that you must add

6

parts

⋅

4 ounces

1

part solvent

=

24 ounces

of distilled water, which is your solvent, to the initial solution.

The target solution will contain  

1

part solute and  

9

parts distilled water for a total of  

10

parts of solution, and hence have a percent concentration of  

10

%

.

You might be interested in
Which of these cannot represent the lengths of the sides of a right triangle?
Sholpan [36]
<h3>Answer: Choice D. 8m, 9m, 10m</h3>

==================================

Explanation:

If a = 8 and b = 9 are the two legs of a triangle and c = 10 is the hypotenuse, then

a^2 + b^2 = c^2

8^2 + 9^2 = 10^2

64 + 81 = 100

145 = 100

We get a false equation as 145 and 100 are two different values. So the original equation is false when (a,b,c) = (8,9,10)

By the converse of the pythagorean theorem, we have proven that this particular triangle is not a right triangle

-------------

Contrast this with something like choice A where we have a = 3, b = 4, c = 5 leading to

a^2 + b^2 = c^2

3^2 + 4^2 = 5^2

9 + 16 = 25

25 = 25

we get a true equation so a triangle with sides 3,4,5 is a right triangle. Choices B and C follow a similar path.

4 0
3 years ago
Read 2 more answers
A wall is 300 square feet. A gallon of paint covers 110 square feet. What is an appropriate conversion factor to help
Verizon [17]
The first one? i dont know what else itd be
4 0
2 years ago
Tom ate 1/2 of the leftovers. How much pie in all did he eat
melisa1 [442]
1/2+1/2=2/2=1 so 1/2 was eaten and the other half was leftovers.
8 0
3 years ago
Read 2 more answers
16. Solve z2 – 2z – 35 = 0 using the zero product property.
kramer
<span>z2 – 2z – 35 = 0 
2z - 2z = 35
0 = 35

No solution</span>
8 0
3 years ago
The length of a rectangle is 8 centimeters less than its width. What are the dimensions of the rectangle if its area is 240 squa
Dmitriy789 [7]
Answer:
Well, Your best answer will be is 35.
Here's a Explain.
W-5=0
W=5 That's for the width.
L=3*5-8
L=15-8=7 And, That's for the length.
Here's proof.
35=7*5
35=35
Hope That Helps!~
6 0
3 years ago
Read 2 more answers
Other questions:
  • In 2000, the total amount of a certain bird population (species of bird of paradise) was recorded at 47,000 in a city. In 2005,
    13·2 answers
  • RdjdtttrdhshzgsZfdmcjgjhvjh
    13·1 answer
  • What are 3 characteristics off ALL similar figures (#25)
    8·1 answer
  • A hotel in Las Vegas, Nevada, is the largest pyramid in the United States. Prior to the construction of the building, the archit
    6·1 answer
  • A rectangle with length of 10 feet and width 6 feet. A diagonal cuts the rectangle into two halves. One of the triangular halves
    13·2 answers
  • 9 less than twice a number is 13. What is the number?
    13·2 answers
  • If you answer correctly I will give you brainliest.
    14·1 answer
  • 7. f(x) = x + 8 ; g(x) = 8x - 12
    12·1 answer
  • Mrs. Chin paid a 20 percent tip on the bill for lunch.
    9·1 answer
  • INSECT CONTROL Mr. Malone used 40 pounds of insecticide to cover 1,760 square feet of lawn and 60 pounds to cover an additional
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!