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
Charra [1.4K]
1 year ago
8

In the laboratory, a student dilutes 18.9 ml of a 10.0 m perchloric acid solution to a total volume of 250.0 ml. what is the con

centration of the diluted solution?
Chemistry
1 answer:
Jobisdone [24]1 year ago
6 0

The concentration of the diluted solution is 0.756 M

Given,

Volume of stock solution (V1) = 18.9 mL

Molarity of stock solution (M1) = 10 M

Volume of diluted solution (V2) = 250 mL

M1V1 = M2V2

10*18.9=M2*250

M_{2}=0.756 M

<h3>Solution </h3>

A homogeneous mixture of two or more substances in relative proportions is referred to as a solution in chemistry. The limit of solubility is the point at which this mixture ceases to be a solution. Although the word "solution" is frequently used to refer to the liquid state of matter, solutions of gases and solids are also possible. Any of these three substances can be a solution. A mixture of liquids, gases, and solids can also make up a solution. Some solutions, like seawater, include a wide variety of solutes, including salts, oxygen, and organic compounds.

Learn more about solution here:

brainly.com/question/1616939

#SPJ4

You might be interested in
Which substance could any excess not be removed by filtration​
horrorfan [7]

Answer:

sodium hydroxide

Explanation:

i think sodium hydroxide

6 0
2 years ago
When the cations Na+, K+, Rb+, Cs+ are combined with chloride ion in the gas phase to form ion pairs, which pair formation relea
Gemiola [76]

Answer:

NaCl

Explanation:

5 0
2 years ago
Read 2 more answers
20 ML of a gas at 200 K is heated until the new volume is 55ML what is the final temperature of the gas
MrRa [10]

Answer:

T2 = 550K

Explanation:

From Charles law;

V1/T1 = V2/T2

Where;

V1 is initial volume

V2 is final volume

T1 is initial temperature

T2 is final temperature

We are given;

V1 = 20 mL

V2 = 55 mL

T1 = 200 K

Thus from V1/T1 = V2/T2, making T2 the subject;

T2 = (V2 × T1)/V1

T2 = (55 × 200)/20

T2 = 550K

8 0
2 years ago
A buffer solution contains 0.345 M acetic acid and 0.377 M sodium acetate . If 0.0613 moles of potassium hydroxide are added to
melamori03 [73]

Answer:

pH = 5.54

Explanation:

The pH of a buffer solution is given by the <em>Henderson-Hasselbach (H-H) equation</em>:

  • pH = pKa + log\frac{[CH_3COO^-]}{[CH_3COOH]}

For acetic acid, pKa = 4.75.

We <u>calculate the original number of moles for acetic acid and acetate</u>, using the <em>given concentrations and volume</em>:

  • CH₃COO⁻ ⇒ 0.377 M * 0.250 L = 0.0942 mol CH₃COO⁻
  • CH₃COOH ⇒ 0.345 M * 0.250 L = 0.0862 mol CH₃COOH

The number of CH₃COO⁻ moles will increase with the added moles of KOH while the number of CH₃COOH moles will decrease by the same amount.

Now we use the H-H equation to <u>calculate the new pH</u>, by using the <em>new concentrations</em>:

  • pH = 4.75 + log\frac{(0.0942+0.0613)mol/0.250L}{(0.0862-0.0613)mol/0.250L} = 5.54
6 0
3 years ago
What is handling of materials and chemicals
Serjik [45]
Exsperements? labs? chemesty? it could be a few things...
5 0
3 years ago
Other questions:
  • Calcium chloride (aq) reacts with sodium carbonate (aq) to from solid calcium carbonate and aqueous sodium chloride. Determine t
    13·2 answers
  • Which structure diagram completes the table of physical structures of the main functional groups?
    5·2 answers
  • How many molecules are in 2L of water vapor at STP?
    9·1 answer
  • How many grams of kno3 pellets must be dissolved in water in order to prepare 100 ml of a 8 m kno3?
    9·1 answer
  • a gas has a volume of 55mL and a pressure of 130 atm. what is the pressure of the gas if the volume changes to 100ml?
    15·2 answers
  • When hcl(aq) and naoh(aq) are mixed in a beaker, the beaker feels warm to the touch. what is known about the enthalpy of this re
    10·1 answer
  • What is the mass of 4.5 moles of Cu(NO3)2?
    7·1 answer
  • Cu^2+ + No2^-<br>what is the formula​
    15·1 answer
  • Heelp balance plez..... :}
    9·1 answer
  • 3c reaction time =138.5 sec reation rate=
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!