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
ss7ja [257]
3 years ago
11

A chemist prepares a solution of magnesium chloride MgCl2 by measuring out 49.mg of MgCl2 into a 100.mL volumetric flask and fil

ling to the mark with distilled water.Calculate the molarity of Cl−anions in the chemist's solution.Be sure your answer is rounded to the correct number of significant digits.
Chemistry
1 answer:
Flura [38]3 years ago
6 0

Answer:  Molarity of Cl^- anions in the chemist's solution is 0.0104 M

Explanation:

Molarity : It is defined as the number of moles of solute present per liter of the solution.

Formula used :

Molarity=\frac{n\times 1000}{V_s}

where,

n= moles of solute

Moles=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{0.049g}{95g/mol}=5.2\times 10^{-4}moles  

V_s = volume of solution in ml = 100 ml

Now put all the given values in the formula of molarity, we get

Molarity=\frac{5.2\times 10^{-4}moles\times 1000}{100ml}=5.2\times 10^{-3}mole/L

Therefore, the molarity of solution will be 5.2\times 10^{-3}mole/L

MgCl_2\rightarrow Mg^{2+}+2Cl^-

As 1 mole of MgCl_2 gives 2 moles of Cl^-

Thus 5.2\times 10^{-3}  moles of MgCl_2 gives =\frac{2}{1}\times 5.2\times 10^{-3}=0.0104

Thus the molarity of Cl^- anions in the chemist's solution is 0.0104 M

You might be interested in
What the Purpose of seeds
k0ka [10]

Answer:

The purpose of all seed is reproduction and is to grow a new plant, thus propagating the species.

5 0
2 years ago
HELP! ASAP!!! WILL MARK BRAINLIEST!!
san4es73 [151]

Answer:

Rb

Alkali Metals are Group 1 so

Rb it isnt Hydrogen because it is a gas

Explanation:

8 0
2 years ago
Read 2 more answers
Define not matter and give examples​
VLD [36.1K]

Answer:

Everything that has mass and takes up space is matter. Every day, you encounter phenomena that either don't have mass or don't take up space. They are non-matter. Basically, any type of energy or any abstract concept is an example of something that is not matter.

An apple.

A person.

A table.

Air.

Water.

A computer.

Paper.

Iron.

hope this helped you

3 0
2 years ago
What is one advantage of using a computer over a graphing calculator?
gayaneshka [121]
Among the given choices, the right statement is that computers are advantageous because it holds a larger amount of data over graphing calculators. Calculators are easier to transport and has lower power consumption. Answer here is D. 
6 0
2 years ago
Read 2 more answers
A binding protein binds to a ligand l with a kd of 400 nm what is the concentration of ligand when y is 0.25
vampirchik [111]

Answer:

The answer is 7600 nm.

Explanation:

As, Y = 0.25 = [ L ÷ (400 + (L)]

0.95 x 400 + 0.25 [ L] = [ L ]

380.25  = [ L ] - 0.95 [ L ]

              = 0.05 [L]

[L] = 380 ÷ 0.05 = 7600nm

6 0
3 years ago
Other questions:
  • 20g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put o
    6·2 answers
  • What does the squamous (flattened) epithelial cell do?
    7·2 answers
  • Which substance is oxidized and which is reduced in this reaction?
    14·1 answer
  • A runner stood at the 100-meter mark on a track. When the timer started, the runner sprinted north to the 200-meter mark. It too
    11·1 answer
  • 95. Using the standard enthalpy of formation data in Appendix G, calculate the bond energy of the carbon-sulfur double bond in C
    6·1 answer
  • Which of the following is a characteristic of nonmetals?
    12·1 answer
  • Two 15.Kg objects are placed at four different distances from each other. At which distance would the two objects have the stron
    10·1 answer
  • During a phase change, such as melting or boiling, the kinetic energy __. Highlight correct answer
    13·1 answer
  • He equation for the dissociation of pyridine is
    15·1 answer
  • 100 POINTS AND BRAINLIEST
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!