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inysia [295]
3 years ago
10

If you have 40 grams of potassium nitrate in 100 grams of water at 20 C:

Chemistry
1 answer:
anygoal [31]3 years ago
7 0

Answer:

Explanation:The final homogenous solution, after cooling it to 40°C, will contain 47 g of potassium sulfate disolved in 150 g of water, so you can calculate the amount disolved per 100 g of water in this way:

[47 g of solute / 150 g of water] * 100 g of g of water = 31.33 grams of solute in 100 g of water.

So, when you compare with the solutiblity, 15 g of solute / 100 g of water, you realize that the solution has more solute dissolved with means that it is supersaturated.

To make a saturated solution, 15 grams of potassium sulfate would dissolve in 100 g of water.

Read more on Brainly.com - brainly.com/question/5143785#readmore

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What type of nuclear decay is shown by the reaction below?
pantera1 [17]

Answer:

B. Alpha

Explanation:

Alpha decays always split into an element and He.

Beta decays always split into an element and e- (eletrons).

Gamma decays always split into an element and radiation.

3 0
3 years ago
The spontaneous intermingling of atoms among different substances is accomplished by_____. active transport energy combustion di
elixir [45]

Answer- The intermingling of atoms takes place the help of diffusion.

Explanation- There are two areas one has a higher concentration and the other has a lower concentration and a substance moves from higher to lower and the process happening is called diffusion.

Combustion is heating up of the substance hence does not have any intermingling atoms and energy transport also does not have any atoms mingling together hence diffusion is the correct option.

8 0
3 years ago
What will happen to a test dummy during a crash test if its seatbelt is not buckled? The test dummy will stop when the car stops
algol13
<span>The test dummy will continue forward until it makes contact with another object.</span>
4 0
3 years ago
Read 2 more answers
2(x+2) -4(2x-3)=4(2x-1)
rodikova [14]

Answer:

x = 10/7

Explanation:

2(x + 2) - 4(2x - 3) = 4(2x - 1),

2x + 4 - 8x + 12 = 8x - 4,

-6x + 16 = 8x - 4,

20 = 14x,

x = 20/14 or 10/7

8 0
3 years ago
Which compound is soluble in water PbS BaS Na2S Fe2S3
Dmitry [639]

Answer:

The answer to your question is Na₂S, if you need to choices the other one is BaS

Explanation:

As a general rule, all the compounds that have sulfur, are insoluble in water, but the are some exceptions.

-Molecules with ammonia

-If the molecule has alkali metals is soluble

-If the molecule has Ca⁺², Sr⁺² and Ba⁺² is soluble in water.

From the compounds given, following the rules, the compound that is soluble in is Na₂S and perhaps BaS.

5 0
3 years ago
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