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nirvana33 [79]
3 years ago
12

Which substance is least soluble at 90°C?

Chemistry
1 answer:
jekas [21]3 years ago
7 0

Answer:

NH3

Explanation:

Which salt is least soluble at 90 degrees Celsius

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How much percent of shops are in the city? How about in the country?
kolezko [41]

Answer:

I would say there would be 5-10% in a city, and maybe 10-20% in the country. It mainly varies depending on how big the city is, how many people/districts there are, and the size of the country, which makes it hard to give a certain percent of shops, as there may be small businesses included as well or new shops being built.

Hope this helps! This was pretty confusing for me as well so i hope the answer is alright (×﹏×)

7 0
1 year ago
How many Molecules does CH4 Have
valentinak56 [21]

Answer:

The amount of molecules in CH4, also known about methane is simply 0.85 * 6.02210 * 10^23 This amounts to about 5.1 * 10^23

4 0
3 years ago
Which of the following is true about nuclear fusion
Sonja [21]

Answer:

 i would assume that it would be (a)

Explanation:

The Sun generates its energy by nuclear fusion

NUCLEAR FISSION is when the heavy atom is split

fusion energy is scientifically feasible. Plasma conditions that are very close to those required in a fusion reactor are now routinely reached in experiments

mass gets lost is nuclear fusion

so (a) is the most accurate

4 0
3 years ago
Read 2 more answers
__Pb(NO3)2 + __NaCI = __NaNO3 + __PbCI2
Elena L [17]

Answer:

Pb(NO3)2 + 2NaCl = 2NaNO3 + PbCl2

6 0
1 year ago
How does a phase change from solid to liquid occur in a substance?
Alex

Answer:

see below

Explanation:

1. Heat energy is added to the substance, weakening the electrical attraction between molecules.

2. Both the melting point and boiling point are lower.

3. dipole

4. Water and ethanol have different molecular structures.

5. The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.

[quizlet: captncrun]

4 0
2 years ago
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