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
Dominik [7]
3 years ago
12

Help me solve this question​

Chemistry
1 answer:
N76 [4]3 years ago
6 0

Answer:

b ella how does any sond 22md how 22x 22x 2md rose blackpink hottest robot

You might be interested in
What would be the IUPAC name of PoTs2
Vikentia [17]

Answer:

6-methylhept-1-en-3-one

Explanation:

6 0
3 years ago
The density of a 3.37M MgCl2 (FW = 95.21) is 1.25 g/mL. Calulate the molality, mass/mass percent, and mass/volume percent. So fa
Dafna1 [17]

Answer : The molality, mass/mass percent, and mass/volume percent are, 0.0381 mole/Kg, 25.67 % and 32.086 % respectively.

Solution : Given,

Density of solution = 1.25 g/ml

Molar mass of MgCl_2 (solute) = 95.21 g/mole

3.37 M magnesium chloride means that 3.37 gram of magnesium chloride is present in 1 liter of solution.

The volume of solution = 1 L = 1000 ml

Mass of MgCl_2 (solute) = 3.37 g

First we have to calculate the mass of solute.

\text{Mass of }MgCl_2=\text{Moles of }MgCl_2\times \text{Molar mass of }MgCl_2

\text{Mass of }MgCl_2=3.37mole\times 95.21g/mole=320.86g

Now we have to calculate the mass of solution.

\text{Mass of solution}=\text{Density of solution}\times \text{Volume of solution}=1.25g/ml\times 1000ml=1250g

Mass of solvent = Mass of solution - Mass of solute = 1250 - 320.86 = 929.14 g

Now we have to calculate the molality of the solution.

Molality=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Mass of solvent}}=\frac{3.37g\times 1000}{95.21g/mole\times 929.14g}=0.0381mole/Kg

The molality of the solution is, 0.0381 mole/Kg.

Now we have to calculate the mass/mass percent.

\text{Mass by mass percent}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100=\frac{320.86}{1250}\times 100=25.67\%

The mass/mass percent is, 25.67 %

Now we have to calculate the mass/volume percent.

\text{Mass by volume percent}=\frac{\text{Mass of solute}}{\text{Volume of solution}}\times 100=\frac{320.86}{1000}\times 100=32.086\%

The mass/volume percent is, 32.086 %

Therefore, the molality, mass/mass percent, and mass/volume percent are, 0.0381 mole/Kg, 25.67 % and 32.086 % respectively.

8 0
3 years ago
Janet dough goes to the doctor for her check up her weight is measured as 115 pounds convert this to kilograms
JulsSmile [24]

Answer:

Hi! I believe this is your answer:

52 kilograms

Hope this helps, sorry if it's wrong!

Explanation:

6 0
2 years ago
True or False: As the ball rises from point 1 to point 3, it slows down
quester [9]
True, it would slow down.
7 0
3 years ago
A sample of nitrogen in a glass bulb has a mass of 245 mg. What is this mass in kilograms? Give your answer to the correct numbe
LekaFEV [45]
1 mg = 10⁻⁶ kg

245 mg = 245·10⁻⁶ kg = 2.45·10⁻⁴ kg
3 0
3 years ago
Read 2 more answers
Other questions:
  • How many moles of helium gas are contained in a 4.0 L flask at STP
    6·1 answer
  • How many of the carbon–carbon bonds in the compound have staggered conformers that are all equally stable?
    12·2 answers
  • A wave has a wavelength of 1.2 m and a wave speed of 24 m/s. What is the
    8·2 answers
  • If I have 5,000g of sodium, how much sodium sulfide can be made?
    8·2 answers
  • A 25-liter sample of steam at 100°c and 1.0 atm is cooled to 25°c and expanded until the pressure is 19.71 mmhg. if no water con
    10·2 answers
  • What is the outermost layer of the earth's core called?
    12·1 answer
  • I will give you Brainly if you awsers right pl if your gonna awser for pints just put I don’t know
    7·2 answers
  • What is the control center or “brain” of a cell called?
    8·2 answers
  • Which of the following is true for the percentage yield of a reaction?
    9·1 answer
  • How many atoms of magnesium metal are needed to produce 3.87 moles of magnesium oxide
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!