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2 years ago

Which chemical has the least solubility at 80 c

Chemistry

1 answer:

Vinil7 [7]2 years ago

6 0

Answer:

But since the solubility product constant for each compound is provided, their relative solubility can be ranked from highest to lowest. Depending on the ranking above, it is evident that aluminum hydroxide Al(OH)3 A l ( O H ) 3 has the lowest solubility at 25 Celsius degreesAs temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C

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Your bedroom air conditioner blows very cold air at night but only cool air during the day. Your bedroom gets lots of direct sun

malfutka [58]

What is the experiment

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3 years ago

I need some information about greenhouse effect, please. Could you help me?

LenKa [72]

Answer: green house affect is the sun on plants it is transfering energy to the plants to help them grow same with every plant, tree, fruit tree. everything needs sun.

Explanation: look up there.

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3 years ago

Read 2 more answers

PLSSSSS HEEEELP!!!!

Naily [24]

Following is the balanced radioactive decay series:

Particle/radiations generated during the reaction are labeled in bold at end of reaction.

Care must be taken that, atomic number and atomic mass number should be balanced in each of these reactions.

1) 92 238U → 90 234Th + 2 4He(α particle)

A = 90 234Th because alpha particle is emitted along with it. So atomic number of daughter element has to be 92 - 2 = 90. This corresponds to Th. 

2) 90 234Th → 91 234Pa + -1 0e (electron)

B = -1 0e i.e electron because after radioactive disintegration atomic number of daughter element (Pa) is +1 as compared to parent element (Th)

3) 91 234Pa → 92 234U + –1 0e (electron)

C = 92 234U because electron is emitted along with it. So atomic number of daughter element has to be 91 - (-1) = 92. This corresponds to U. 

4) 92 234U → 90 230Th + 2 4He (α particle)

In this case, 92 234U undergoes nuclear disintegration to generate 90 230Th and alpha particle

5) 90 230Th → 88 226Ra + 2 4He (α particle)

D = 88 226Ra because alpha particle is emitted along with it. So atomic number of daughter element has to be 90 - 2 = 88. This corresponds to Ra.

6) 88 266Ra → 86 222Rn + 2 4He (α particle)

E = alpha particle because during nuclear disintegration, 88 266Ra is converted into 86 222Rn. Hence, for mass balance we have 88 - 86 = 2. It corresponds to alpha particles.

7) 86 222Rn → 84 218Po + 2 4He (α particle)

Again, F = alpha particle because during nuclear disintegration, 86 222Rn is converted into 84 218Rn. Hence, for mass balance we have 86 - 84 = 2. It corresponds to alpha particles.

8) 84 218Po → 82 214Pb + 2 4He (α particle)

G = 82 214Pb because alpha particle is emitted along with it. So atomic number of daughter element has to be 84 - 2 = 82. This corresponds to Pb.

9) 82 214Pb → 83 214Bi + -1 0e (electron)

H = -1 0e because after radioactive disintegration atomic number of daughter element (Bi) is +1 as compared to parent element (Pb)

10) 83 214Bi → 84 214Po + –1 0e (electron)

I = 84 214Po because electron is emitted along with it. So atomic number of daughter element has to be 83 - (-1) = 84. This corresponds to Po.

11) 84 214Po → 82 210Pb + 2 4He (α particle)

J = 82 210Pb because alpha particle is emitted along with it. So atomic number of daughter element has to be 84 - 2 = 82. This corresponds to Pb.

8 0

3 years ago

Describe the sources of water pollution in hydrological cycle.

Bingel [31]

Explanation:

The hydrological cycle is the continuous cycling of water between land, open water surfaces and the sea. This cycle begins with evaporation, sunlight evaporates water from the surface of earth, next condensation happens, the water absorbed is now used to form clouds, after these clouds are filled to the maximum, precipitation happens, this can be in the form of rainfall and snow, this cycle finalizes when the precipitation of water runs off the land and back into water sources.

Sources of water pollution:

During precipitation: Smog can be gathered in the atmosphere, during precipitation this pollution can turn into acid rain.
During runoff: After acid rain hits the ground this polluted water can run into water sources (lakes, rivers, reservoirs).To some extent rivers are a self-renewing resource, if a small quantity of pollution discharges in it the river can return to a clean, unpolluted condition, unfortunately, if the pollution is too big the renewing won't be possible, another problem is even though rivers get cleaned the pollution moves to the seas. Lakes are even more vulnerable to pollution, the flushing effect in these water bodies is less evident than in rivers.

I hope you find this information useful and interesting! Good luck!

8 0

3 years ago

(~40 Points, Please answer and explain)

Helen [10]

Answers:

1. CO₂ < Ar < N₂ < He;

2. Cl₂ < CO₂ < Ar < N₂ < H₂

Step-by-step explanation:

Graham’s Law applies to the diffusion of gases:

The rate of diffusion (r) of a gas is inversely proportional to the square root of its molar mass (M).

$r = \frac{1 }{\sqrt{M}}$

If you have two gases, the ratio of their rates of diffusion is

$\frac{r_{2}}{r_{1}} = \sqrt{\frac{M_{1}}{M_{2}}}$

1. Order of diffusion rates

According to Graham's Law, the lightest gases will have the highest diffusion rates and the heavier gases the slowest.

The molecular masses of the gases are:

Ar 39.95; CO₂ 44.01; He 4.00; N₂ 28.02

Putting them in order,we get

44.01 > 39.95 > 28.02 > 4.00

CO₂ > Ar > N₂ > He

Thus, the relative rates of diffusion are

CO₂ < Ar < N₂ < He

2. Order of molecular speeds

A postulate of the Kinetic Molecular Theory is that at a given temperature, the average kinetic energy of the molecules is directly proportional to the Kelvin temperature.

KE = ½ mv² ∝ T

mv² ∝ T Divide each side by m

v² ∝ T/m

If T is constant.

v² ∝ 1/m Take the square root of each side

v ∝ 1/√m

This is an inverse relationship, so the molecules with the smallest molecular mass should have the highest average speeds.

The molecular masses of the gases are:

N₂ 28.02; H₂ 2.016; Cl₂ 70.91; CO₂ 44.01; Ar 39.95

Putting them in order. we get

70.91 > 44.01 > 39.95 > 28.02 > 2.016

Cl₂ > CO₂ > Ar > N₂ > H₂

Thus, the relative molecular speeds are

Cl₂ < CO₂ < Ar < N₂ < H₂

4 0

3 years ago