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
denpristay [2]
3 years ago
7

Potassium fluoride is used for frosting glass. calculate the molarity of a solution prepared by dissolving 78.6 g of kf in enoug

h water to produce 225 ml of solution.
Mathematics
1 answer:
melisa1 [442]3 years ago
3 0
<span>There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. We calculate as follows:

Molarity =  78.6 g KF ( 1 mol / 58.1 g ) / .225 L = 6.013 mol / L KF solution</span>
You might be interested in
Which one does it simplify to? please
9966 [12]

Answer:

1    +    { \sin}  \theta

Step-by-step explanation:

\frac{  { \cos}^{2}  \theta}{1 -  \sin \theta}  \\  \\  = \frac{  { \cos}^{2}  \theta}{(1 -  \sin \theta)}  \times  \frac{(1  +  \sin \theta)}{(1  +   \sin \theta)}   \\  \\  = \frac{{ \cos}^{2}  \theta(1    +    { \sin}  \theta)}{(1   -   { \sin}^{2}  \theta)}  \\  \\  = \frac{{ \cancel{ \cos}^{2}  \theta}(1    +    { \sin}  \theta)}{ \cancel{{ \cos}^{2}  \theta}}   \\  \\  = 1    +    { \sin}  \theta

6 0
2 years ago
Read 2 more answers
PLS HELP THIS IS HARD ANYONE PLS
drek231 [11]
I think it’s B (0, 0) (5, -3), (4, 1).
8 0
3 years ago
Someone knows how to do this?
devlian [24]

Answer:

w = 9

Step-by-step explanation:

All angles are multiplied by 3 from the smaller one

6 0
3 years ago
Read 2 more answers
Alice and Bob each picks an integer number uniformly at random between 1 and n. Assume that all possible combinations of two num
kotegsom [21]

Answer:

(n-1)/2n

Step-by-step explanation:

½(1 - 1/n)

(n-1)/2n

7 0
3 years ago
What is 23/8 as a decimal?
trasher [3.6K]
To write 23/8 as a decimal you have to divide numerator by the denominator of the fraction. 
<span>We divide now 23 by 8 what we write down as 23/8 and we get 2.875 </span>

<span>And finally we have: </span>
23/8 as a decimal<span> equals </span><span>2.875</span>
7 0
4 years ago
Read 2 more answers
Other questions:
  • An area rug in Rachel's room is shown below. A rectangle that is one hundred forty-four inches long and one hundred eight inches
    13·1 answer
  • The cost of 13 credit hours was 1222 what did 11 credit cost
    14·2 answers
  • 1- 42 students is ___% of 85
    6·1 answer
  • Melissa bought 3 loaves of freshly baked bread at a specialty bread shop. She paid twice as much for the whole grain bread as fo
    15·1 answer
  • List 1/8 0.75 2/5 and 5/6 from least to greatest
    6·1 answer
  • How to Change the water faucet knobs
    13·2 answers
  • Help please 8th grade math :(
    11·1 answer
  • What is the volume of the figure?
    8·1 answer
  • What is the approximate volume of the cylinder? Use 3.14 for pie
    6·1 answer
  • five soccer players each contributed and equal share toward a $50 gift for their coach. Write and solve an algebraic equation to
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!