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
trapecia [35]
3 years ago
9

What volume of a 2.00 m kcl solution is required to prepare 500. ml of a 0.100 m kcl solution?

Chemistry
1 answer:
den301095 [7]3 years ago
3 0

To solve this we use the equation, 

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

2 M x V1 = 0.1 M x .5 L

<span>V1 = 0.025 L or 25 mL of the 2 M KCl solution is needed</span>

You might be interested in
The best way to get the sugar out of a sugar-water solution is to __________.
Jet001 [13]

Answer:

Distillation is the process by which sugar can be separated from the sugar solution.

Explanation:

Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective <u>boiling and condensation.</u>

8 0
3 years ago
Read 2 more answers
Що таке кислоти? pliz<br>​
Shtirlitz [24]

Answer:

The last word means acid.

Explanation:

5 0
3 years ago
Why would fluorine, chlorine, and bromine be placed in the same group (the halogens) in the periodic table of elements? (1 point
inna [77]

D. They share chemical properties.

7 0
3 years ago
1. Pewien tlenek azotu o masie cząsteczkowej 108 u zawiera 74,07% tlenu. Wykonaj stosowne obliczenia i napisz wzór sumaryczny te
love history [14]

Answer:

1. Stąd empiryczny wzór substancji to N₂O₅

2. W związku z tym ilość w gramach chlorku sodu NaCl is 114,4 g.

Explanation:

1. Mamy tutaj;

Masa molowa tlenku azotu = 108u

Masa azotu = 14,0067u

Masa tlenu = 15,999 u

74,07% masy tlenku azotu to tlen

Dlatego masa obecnego tlenu = 108 × 74,07 / 100 = 79,9956 u

Masa obecnego azotu = 108 - 79,9956 = 28,0044u

Liczba moli tlenu = 79,9956 / 15,999 = 5,00003 ≈ 5

Liczba moli azotu = 28,0044 / 14,0067 = 1,99935 ≈ 2

Stąd empiryczny wzór substancji to N₂O₅.

2. Kiedy sód reaguje z chlorem, mamy;

2Na (s) + Cl₂ (g) → 2NaCl (s)

Dlatego 2 mole sodu Na reaguje z 1 molem chloru gazowego Cl₂, z wytworzeniem 2 moli chlorku sodu NaCl

W związku z tym 1 mol sodu Na reaguje z 1/2 molem chloru gazowego Cl₂ z wytworzeniem 1 mola chlorku sodu NaCl

Masa Na obecnego w reakcji = 45 g

Masa molowa sodu = 22,989769u

Liczbę moli sodu w 45 g sodu podano w następujący sposób;

Liczba \, \, moli \, \, Na= \frac{Mass \, of \, Na}{Molowy \, masa \, z \, Na} = \frac{45}{22.989769} = 1.96 \, mole

Z czego 1,96 moli sodu Na reaguje z 1/2 × 1,96 mola chloru gazowego Cl₂ z wytworzeniem 1,96 mola chlorku sodu NaCl

Masa molowa NaCl = 58,44 g / mol

Dlatego masa NaCl = liczba moli NaCl × masa molowa NaCl

Masa NaCl = 1,96 × 58,44 = 114,39001 g ≈ 114,4 g

W związku z tym ilość w gramach chlorku sodu NaCl = 114,4 g.

4 0
3 years ago
What is the molarity of a 9.0 L solution that contains 0.500 mol HCl?
victus00 [196]

Answer: 0.056

Explanation:

6 0
3 years ago
Other questions:
  • Which of the following notations is the correct noble gas configuration for
    11·1 answer
  • How many molecules are in 0.400 moles of. N2O5?
    13·2 answers
  • Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. One or more locat
    5·2 answers
  • g In animal tissues the rate of conversion of pyruvate to acetyl-CoA is regulated by the ratio of phosphorylated and dephosphory
    5·1 answer
  • What volume would a 0.871 gram sample of air occupy if the density of air is 1.29 g/L?
    7·2 answers
  • How many moles of H2 are needed to produce 34.8 moles of NH3?
    15·1 answer
  • Name three organelles and explain the function of each.
    10·1 answer
  • 1. Can living things serve as an indicator of exposure to electromagnetic radiation? Why?
    5·1 answer
  • How much of a 10 M solution is needed to make 1 liter of a 1M solution?
    15·1 answer
  • What begins the combustion phase of a four-stroke engine cycle? A B C D​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!