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3 years ago

Calculate the molar solubility of pbi2 in the presence of 0.10 m nai.

Chemistry

1 answer:

lys-0071 [83]3 years ago

5 0

The equation representing the solubility of $PbI_{2}$ :

$PbI_{2}(aq)Pb^{2+}(aq) + 2 I^{-}(aq)$

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2. How many moles of copper are needed to react with sulfur to produce 0.25 moles of

dimaraw [331]

Answer:

0.5

Explanation:

Cu Cu2S

2 : 1 ratio

therefore 0.25 moles of Cu2S * (2 moles of Cu/ 1 mole of Cu2S)

=0.5 moles of Cu

6 0

4 years ago

If I have 6 moles of a gas at a pressure of 5.8 atm and a volume of 12 liters, what

poizon [28]

The temperature of the system is 141.36K.

<h3><u>Explanation</u>:</h3>

According to the universal gas law, the pressure of a gas is directly proportional to the absolute temperature and number of moles of the gas and inversely proportional to the volume of the gas.

So in equation format,

$\frac{P\times V}{n\times T}$ =constant.

Or $\frac{P\times V}{n\times T}$ = R.

Here R is called the universal gas constant which has different values in different units.

Here the unit of volume is in litres and unit of pressure is in atmosphere.

So. Value of R comes as =0.082057 $\frac{L\times atm} {K\times mole}$ .

So, according to the question,

P is 5.8atm, V is 12 litres and n is 6 moles.

So, $5.8\times12$ = $6\times0.082057\times T$ .

Or, T = $\frac{5.8\times12} {6\times0.082057}$ .

Or, T = 141.36.

So,the temperature of the system is 141.36K

7 0

4 years ago

What is the mass of oxygen in 25.0 grams of potassium permanganate , KMnO4?

Katen [24]

Answer:

10.76 grams

Explanation:

Given that the amount of $KMnO_4$ is 25.0 grams.

Mass of 1 mole of $KMnO_4$ = 158 grams

The number of atoms in 1 mole of $KMnO_4$ is 4.

Mass of oxygen in 1 mole of $KMnO_4$ = 16\times 4 = 68 grams.

Here, 158 grams of $KMnO_4$ has 68 grams of oxygen

So, the amount of oxygen in 1 gram of $KMnO_4$ = 68/158 grams

Therefore, the amount of oxygen in 1 gram of $KMnO_4$ = $\frac {68}{158}\times 25$ grams

=10.76 grams

Hence, 25 grams of $KMnO_4$ has 10.76 grams of oxygen.

3 0

3 years ago

Read 2 more answers

What was a major accomplishment of the Apollo mission

denpristay [2]

Hi there!

The <span>major accomplishment of the Apollo missions was to successfully land Americans on the Moon and to return them safely to Earth. One major reason for this was to establish a way for us to travel to other celestial bodies safely so we could research them and study how they work or to see if they are inhabitable.

-Your friend, ASIAX</span>

4 0

3 years ago

Please help it’s due asap<br> I WILL GIVE BRAINLIEST

inna [77]

I think it’s number 5 and number 9 hopes this helps.

4 0

3 years ago