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
Illusion [34]
3 years ago
14

A solution is prepared by adding 1.43 mol of kcl to 889 g of water. the concentration of kcl is ________ molal. a solution is pr

epared by adding 1.43 mol of kcl to 889 g of water. the concentration of kcl is ________ molal. 1.27 × 103 1.61 1.61 × 10-3 0.622 622
Chemistry
1 answer:
s344n2d4d5 [400]3 years ago
7 0
A solution is prepared by adding 1.43 mol of potassium chloride (kcl) to 889 g of water. The concentration of kcl is 1.61  molal.
mol of Kcl (potassium chloride)= 1.43
water = 889 g
the formula for calculating molality is:
molality = moles of solute/kilograms of solvent
1kg = 1000g so, 889g = 0.889kg

m = 1.43/0.889 = 1.61 molal
You might be interested in
If 2 objects have the same density they must have the same
atroni [7]

Answer:

Explanation:

Density can be defined as mass divided by volume. But 2 objects made of the same material will have the same density regardless of their volume.

8 0
3 years ago
Which of the following was not a geological clue used to support the theory of continental drift
Andrei [34K]

The answer is:

D. Samples of ocean water.

4 0
3 years ago
Read 2 more answers
Josie observed that when water is boiled in an open beaker it completely disappears, leaving the beaker dry. What can Josie conc
-BARSIC- [3]
That when water is boiled in a open beaker and it disappears that it evaporates into the air
6 0
3 years ago
Merits of modern periodic table?​
ANEK [815]

Answer:

<h3>Merits of modern periodic table:</h3>
  • The wrong position of some elements like argon, potassium, cobalt and nickel due to atomic weights have been solved by arranging the elements in the order of increasing atomic number without changing their own places.
  • The isotopes of some element have the same atomic numbers. Therefore, they find the same position in periodic table.
  • It separates metals from non-metals.
  • The groups of the table are divided into sub groups A and B due to their dissimilar properties which make the study of elements specific and easier.
  • The representative and transition elements have been separated.

Hope this helps...

Good luck on your assignment...

6 0
3 years ago
Dubnium chloride chemical formula
cupoosta [38]

Answer:

Db

Dubnium/Symbol

Explanation:

please mark my answer in brainlist plz

4 0
2 years ago
Read 2 more answers
Other questions:
  • How do aromatic hydrocarbons differ from alkenes?
    13·2 answers
  • How many orbital blocks are represented in this<br> periodic table?
    7·2 answers
  • Please help I will mark Brainly!
    12·1 answer
  • HURRY!!!
    6·2 answers
  • You are given a substance that is equally soluble in water and hexane, what is the kd
    12·1 answer
  • The last time the atmospheric carbon dioxide level was as high as it is today was _________ years ago.
    13·1 answer
  • Which of the following feedbacks can be either positive or negative?
    12·1 answer
  • Please explain the difference between reactants and products in a chemical reaction.
    11·1 answer
  • Suppose that we combined 75 g of magnesium with 45 g of nitrogen and heat them up. Predict the product of
    8·1 answer
  • Phosphorus trichloride (PC) is used as a reactant in the production of many other chemicals that contain phosphorus, including p
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!