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sashaice [31]
2 years ago
11

How do you figure out molality

Chemistry
1 answer:
hodyreva [135]2 years ago
3 0
*The molality of a solution is calculated by taking the moles of solute and dividing by
the kilograms of solvent* Basically if we had 1.00 mole of sucrose (it's about 342 3 grams) and
proceeded to mix it into exactly 1.00 liter water. It would dissolve and make sugar
water. We keep adding water, dissolving and stirring until all the solid was gone. We
then made sure everything was well-mixed.
What would be the molality of this solution? Notice that my one liter of water weighs
1000 grams (density of water = 1.00 g / mL and 1000 mL of water in a liter).
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Is bleaching hair a physical or chemical change
Greeley [361]
Bleaching hair i a physical change i think; it washes the pigments out.

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8 0
3 years ago
What is the name of the molecule below?
Arte-miy333 [17]

Answer:

The name of the molecule which is given below is 2-pentene.

Explanation:

Alkenes are the organic compounds which are composed of carbon and hydrogen atoms, in which double bond is present.

In the given diagram:

Each corner and joints shows the carbon atoms and number of carbon atoms in it is 5.

One double bond is present in the 2nd position.

So the compound is 2 pentene.

Hence, 2 pentene is the name of the compound.

5 0
2 years ago
HELP PLZ!!!
Marrrta [24]

The concentration of diluted solution is found to be 0.421 M

<u>Explanation:</u>

It is given that a stock solution (400 ml) should be diluted to 750 ml, we need to find the concentration of the diluted solution using the Law of Volumetric analysis,

V1M1 = V2M2

V1 being the volume of the stock solution = 400 ml

M1 being the molarity of the stock solution = 0.789 M

V2 being the volume of the diluted solution = 750 ml

M2 being the molarity of the diluted solution = ?

Now we have the molarity of the diluted solution by rearranging the above equation as,

M2 = $\frac{V1M1}{V2}

Now plugin the values as,

M2 = $\frac{400 ml \times 0.789 M}{750 ml }

     = 0.421 M

So the molarity of diluted solution is found to be 0.421 M.

7 0
3 years ago
Which of the following statements gives the best evidence that gravity pulls objects toward the center of the Earth?
wel

Answer: D

Explanation:

D is the best explanation:

Asteroids approaching the Earth from any direction get pulled toward the Earth.

7 0
3 years ago
Read 2 more answers
How many mol of butan-1-ol are in 10.0 mL of butan-1-ol?
ELEN [110]

Answer:

2) 0.109 mol

Explanation:

The density of butan-1-ol is 0.8098g/mL. And its molar mass is: 74.121g/mol.

First, we need to convert volume of butan-1-ol to mass:

10.0mL * (0.8098g / mL) = 8.098g of butan-1-ol

Now, we need to convert these grams to moles using molar mass:

8.098g * (1mol / 74.121g) = 0.109 moles of butan-1-ol

Right answer is:

<h3>2) 0.109 mol </h3>

7 0
3 years ago
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