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
velikii [3]
2 years ago
8

How many grams of NaCI per kilogram of water are present in a 2.7 molal aqueous solution​

Chemistry
1 answer:
navik [9.2K]2 years ago
5 0

Answer:

157.79 g

Explanation:

The definition of molality is:

  • molality = moles of solute / kilogram of solvent

This means that in a 2.7 molal solution, there are 2.7 moles of NaCl per kilogram of water.

So now w<u>e convert those 2.7 moles of NaCl to grams</u>, using its <em>molar mass</em>:

  • 2.7 mol * 58.44 g/mol = 157.79 g
You might be interested in
Name the functional group in the
zysi [14]

Answer:

the correct answer B. carboxylic acid

Explanation:

carboxylic acid, any of a class of organic compounds in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond and to a hydroxyl group (―OH) by a single bond. A fourth bond links the carbon atom to a hydrogen (H) atom or to some other univalent combining group.

6 0
2 years ago
In the reaction, 3Cu + 2Al3+ → 3Cu2+ + 2Al, which substance is being oxidized?
Wittaler [7]
In this reaction, Copper is the element being oxidized because it is losing electrons. It starts with a neutral charge (0) and ends up with a 6+ charge. Because its charge is increasing, it is being oxidized (losing electrons).

4 0
2 years ago
The diagram below shows the atoms involved in forming table salt. Which statement best describes what happens next ?
Ghella [55]

An ionic compound is composed of ionic bonds that are formed by transfer of electrons from one atom to the other. The atom that loses electrons acquires a positive charge (cation) while that which gains electrons acquires a negative charge.

In the case of sodium chloride; Sodium Na has 1 electron in its outer orbital while Chlorine Cl has 7 electrons. Thus, Cl requires 1 electron to complete its octet. This electron is donated by Na.

Thus, NaCl is essentially, Na⁺Cl⁻

Ans D) Chlorine becomes an anion by gaining an electron from sodium

5 0
3 years ago
Read 2 more answers
Help me please!! What is the name of the alkyne molecule
juin [17]

Answer:

ans is (2) 2,4- hexadiene

5 0
3 years ago
If the sun is next to the earth on the left, and the moon is next to the earth on the right, what type of tide is it?
Andrej [43]

Answer:

When the sun, moon, and Earth are in alignment (at the time of the new or full moon), the solar tide has an additive effect on the lunar tide, creating extra-high high tides, and very low, low tides—both commonly called spring tides.

3 0
2 years ago
Other questions:
  • so I am working on this question for chemestry and can't figure out the format it wants since I am blind. The question states Wr
    5·1 answer
  • Analyze the graph
    6·1 answer
  • Which of these is an acid?
    6·2 answers
  • A 346.9 ml sample of carbon dioxide was heated to 381 k. if the volume of the carbon dioxide sample at 381 k is 596.2 ml, what w
    11·1 answer
  • How does warm water at the surface of the ocean<br> become colder?
    11·1 answer
  • Consider the dissolution of calcium hydroxide:
    5·1 answer
  • What is the average isotopic mass of an element that has the following abundances in nature? Isotopic mass: X20 X22 X23 Abundanc
    14·1 answer
  • In a fizzy drink container how is steel separated from aluminium
    5·1 answer
  • PLS HELP
    14·1 answer
  • Please help me i need yall will mark brainliest and 30 points!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!