All categories

3 years ago

A substance has a solubility of 350 ppm.how many grams of the substance are present in 1.0l of a saturated solution

Chemistry

2 answers:

Kazeer [188]3 years ago

8 0

Answer:

0.350 grams of the substance are present in 1.0l of a saturated solution

Explanation:

Parts per million (ppm), is a unit of measurement for concentration. Refers to the number of units of the substance per million units of the set.

So ppm means parts per million, that is, the mg (milligrams) in a kg of solution.

Considering that the density of a substance is 1000 kg / m3 (and 1 m3 is 1000 L), 1 kg of solution has a volume of approximately 1 liter, ppm also represents the mg of a substance in a liter of solution. That is, 1 ppm = 1 mg / L.

So in 1 L there are 350 mg of substance present. Being 1 g = 1000 mg, then 350 mg is 0.350 g.

<u><em>0.350 grams of the substance are present in 1.0l of a saturated solution</em></u>

sergeinik [125]3 years ago

6 0

Since the given solubility is 350 ppm, convert it first with fraction of solubility. by dividing the solubility with 10^6
S = 350 / 10^6
s = 3.5 x 10^-4
the multiply it to the total solution to calculate the amount of substance present
m = ( 3.5 x 10^-4 ) ( 1.01 )
m = 3.535 x 10^-4 g of the substance present

You might be interested in

What is the biggest difference between thermal energy and temperature?

Oliga [24]

Answer:

Heat deals more with thermal energy whereas temperature deals with molecular kinetic energy.

7 0

3 years ago

A board measures 212 inches. How many feet is this?

quester [9]

17.6667 Feet is the answer.

6 0

3 years ago

Read 2 more answers

Calculate the amount of copper (in moles) in a 45.2 g pure copper sheet

tangare [24]

Answer:

0.712 mol

Explanation:

The easiest way to do this is to use a proportion.

1 mol of copper = 63.5 grams (check this using your periodic table).

x mol of copper = 45.2 grams

1/x = 63.5 / 45.2 Cross multiply

63.5 x = 1 * 45.2 Divide by 63.5

x = 45.2/63.5

x = 0.712 mol Answer to 3 sig digs

8 0

3 years ago

Scientists often work on projects for a long time and fail to see sources of error in their research. Which process allows an ou

prohojiy [21]

Answer:

The correct approach is Option B (Peer Review).

Explanation:

Rather made reference to someone as a scientific peer-review, it encourages the specialist who has not been essential to the study team to analyze the study objectively and pointed out everyone's mistakes. It serves as major self-regulation for scholars and aims to make the publishing process somewhat credible. Hence, the solution to this issue is Peer Examination.
Funding organizations rarely have the capabilities to recognize out mistakes, whereas definitive analysis is a method of study that helps to make a definitive statement. The gathering of data is simply a process of scientific study.

Other approaches do not apply to the example mentioned. Although the one mentioned is right.

4 0

3 years ago

Read 2 more answers

Electrolysis is used in the electroplating of metals. The same amount of current is passed through separate aqueous solutions of

Aleonysh [2.5K]

Answer:

CuSO4 cell will have the greatest amount of deposit among all three. The deposit will occur at the cathode

Explanation:

The valence of the elements in this case is as follows -

Cu - 2e-

Sn - 4e-

Cr - 3e-

CuSO4 cell will have the greatest amount of deposit among all three

The atoms of copper metal will deposit at the cathode. At the cathode, the least number of moles of electrons needed .

Hence, more amount of copper can be extracted out by the electrolyte

3 0

3 years ago