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
Nataly_w [17]
3 years ago
8

How would you prepare 3.5 L of a 0.9M solution of KCl?

Chemistry
1 answer:
PolarNik [594]3 years ago
4 0
V=3,5L\\
Cm=0,9M\\
M_{KCl}=74\frac{g}{mol}\\\\
C_{m}=\frac{n}{V}\\\\
n=\frac{m}{M}\\\\
C_{m}=\frac{m}{MV} \ \ \ \Rightarrow  \ \ \ m=C_{m}MV\\\\
m=0,9\grac{mol}{L}*74\frac{g}{mol}*3,5L=233,1g

B. Add 233 g of KCl to a 3.5 L container; then add enough water to dissolve the KCl and fill the container to the 3.5 L mark. 
You might be interested in
Describe how phospholipids form a barrier between water inside the cell and water outside the cell
Lynna [10]
<span>Phospholipids would have to form a phospholipid bilayer in order to achieve water on the outside and water inside. This is because the nonpolar tails of the phospholipids are facing each other in a water environment because they cannot interact with the water, only their own tails, while the phosphate heads of the molecule face the periphery of the tails and interact with water. Micelles are the simplest examples of these.</span>
6 0
3 years ago
How many
Aleksandr-060686 [28]

Answer:

A. 1.50

Explanation:

9.01 x 1023 molecules* 1 mol/ 6.022×1023 molecules= 1.49618067087 moles

Rounded would be 1.50

5 0
2 years ago
The atomic number of Re is 75. The atomic mass of one of its isotopes is 186. How many neutrons are in an atom of this isotope?
USPshnik [31]

Answer:

B.111

Explanation:

Atomic mass = number of protons(or atomic number) + number of neutrons

186 = 75 + number of neutrons

number of neutrons = 186 -75 = 111

7 0
3 years ago
When potassium hydroxide and barium chloride react, potassium chloride and barium hydroxide are formed. The balanced equation fo
Natasha_Volkova [10]
The answer is <span> 2KOH + BaCl2 --> 2KCl + </span>
6 0
3 years ago
Read 2 more answers
Magnesium and nitric acid to give magnesiumnitrate and water balancing equation​
marusya05 [52]
Balanced equation:

Mg + 2 HNO3 —> Mg(NO3)2 + H2

This is a metal + acid reaction giving salt and hydrogen (not water).
3 0
2 years ago
Other questions:
  • PLEASE HELP 100 POINTS!!!
    6·2 answers
  • PLZ HELP! Which of the following statements is true?
    14·1 answer
  • The atomic mass of chlorine is listed as 35.454 amu on the periodic table. It has two naturally occurring isotopes, Cl-35 and Cl
    10·1 answer
  • Modify methionine, below to show its zwitterion form.
    10·2 answers
  • How to tell the ionization energy of atoms
    15·1 answer
  • HELP true or false: if all the bonds in a molecule are polar the molecule is a polar molecule
    7·2 answers
  • The molecular formula for a compound with a molar mass of 180.18g that contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen by
    15·1 answer
  • What happens to most of the Energy that an organism gets from consuming food? <br><br>Help please​
    13·2 answers
  • if the same amount of heat is added to 50.0 g samples of each of the metals, which are all at the same temperature, which metal
    15·1 answer
  • Find the pH of a buffer that consists of 1.3 M sodium phenolate (C₆H₅ONa) and 1.2 M phenol (C₆H₅OH) (pKₐ of phenol = 10.00).
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!