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
VikaD [51]
3 years ago
5

What is the number of kilograms of solvent in a 0.70 molal solution containing 5.0 grams of solute?

Chemistry
1 answer:
Leya [2.2K]3 years ago
3 0
Molar mass of solute is 30 g/mol 
molality is defined as the number of moles of solute in 1 kg of solvent 
number of moles of solute - 5.0 g / 30 g/mol = 0.17 mol
molality of solution is 0.70 mol/kg
the mass of solvent when there are 0.7 mol of solute - 1 kg
then the mass of solvent when there's 0.17 mol of solute - 0.17 mol / 0.7 mol/kg
= 0.242 kg
therefore mass of solvent is 0.242 kg
You might be interested in
What change would most likely decrease the rate of a chemical reaction? A) maintaining a temperature close to room temperature B
Nutka1998 [239]

Answer:

D) cooling of the reaction mixture

Explanation:

Increase in temperature speedens the rate of a chemical reaction

5 0
2 years ago
In the lewis structure of ch3oh, how many lone pairs of electrons are there? in the lewis structure of ch3oh, how many lone pair
Lunna [17]
The structure of Methanol (CH₃OH) is shown below. This structure contains 2 lone pair of electrons on oxygen (highlighted red). Electronic configuration of oxygen is,

                        Oxygen  =  8  =  1s², 2s², 2px², 2py¹, 2pz¹

There are six electrons in valence shell of oxygen, among these six electrons two electrons are unpaired and involved in forming covalent bond with hydrogen and carbon, while remaining 4 electrons in pair (i.e. 2s², 2px²) exists as lone pairs.

7 0
3 years ago
Complete this equation for the dissociation of the electrolyte NaCl(aq). Omit water from the equation because it is understood t
ella [17]

1. Answer;

Equation;

-NaCl(aq) → Na{+}(aq) + Cl{-}(aq)

Explanation;

-The polar property of water allows ionic compounds such as sodium chloride to dissolve in water. (sodium chloride is an ionic compound).

-Sodium chloride dissociates in water into sodium ions and chloride ions as shown by the equation. Water molecules surrounds the negatively charged chloride ions and positive sodium ions and pulls them away into solution.

2. Answer;

Equation;

Fe(ClO4)3(aq) → Fe 3+(aq) + 3ClO4 - (aq)

Explanation;

Iron (iii) perchlorate (Fe(ClO4)3 dissociates in water into iron (iii) ion and perchlorate ion. Iron (iii) ion is positively charged while the perchlorate ion is negatively charged, they are pulled apart by the polar water molecules, a process called dissociation.

-

5 0
3 years ago
Read 2 more answers
Attempt 1
Vsevolod [243]

Answer:

12.01

Explanation:

(12.00*98.93% + 13*1.07%) /100% = 12.01

3 0
3 years ago
How many meters does daniel have to walker
Tcecarenko [31]

14,200 because all you have to do to solve this is multiply 14.2 kilometers by 1,000 meters to find the distance that he walks.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Why don't rockets need air to stay up, like planes do?
    10·1 answer
  • What is the volume of a sample of liquid mercury that has a mass of 76.2g given that the density of mercury is 13.6g/mL
    12·1 answer
  • What is the mass of 30.0 ml of a solution with a density of 1.60 g/ml?
    8·2 answers
  • The spongy layer of a leaf<br> HELLPROPRPTPR
    15·1 answer
  • What happens to an egg that is not fertilized?
    6·2 answers
  • Which element easily loses one electron to form a positive ion? A. Magnesium (Mg) B. Lithium (Li) C. Nitrogen (N) D. Fluorine (F
    5·1 answer
  • Susan and her friend found a piece of metal which they want to
    7·1 answer
  • WILL MARK BRAINLIEST! PLEASE HELP!!
    5·1 answer
  • An alkane group has a formula of CxH6, determine the value of x​
    6·2 answers
  • A book is sliding across a horizontal tabletop. As it slides, slows down. Which of the following statements best explains this s
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!