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zepelin [54]
3 years ago
10

1. Какая масса растворённого вещества содержится в 21г. раствора с массовой долей 0,9%

Chemistry
2 answers:
vfiekz [6]3 years ago
3 0

Answer:

I don't know this language please send me in English please

kramer3 years ago
3 0

Answer:

di ko alam pimagsasabi mo putik ka alam ko sana pero di ko lam yung font?!

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Why does sugar dissolve faster than salt
Usimov [2.4K]

☁️ Answer ☁️

Option 1: When dissolved, sugar molecules have more opportunities to bond with positive-negative water molecules. Therefore, sugar dissolves faster than salt, because its component molecules are more soluble in water.

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Option 2: Sugar can dissolve easier than salt because when you add 8 spoons of salt into water the salt already starts to stay in the bottom of the cup. And, when you add 30 spoons into water the sugar just starts to stay in the bottom of the cup. It’s almost the same.

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4 0
3 years ago
I'll give brianliest if correct .
Tresset [83]

Answer:

the answer is decaying wood

3 0
3 years ago
Chemical substances that dissolve in water or react with water to release ions are known as
disa [49]
The answer is electrolytes. Strong electrolytes like strong acids, strong bases and salts dissociate completely into ions when dissolved and no neutral molecules are present in their solution. Weak electrolytes like weak acids and weak bases do not completely ionize in water and some neutral molecules are present in their solution, while nonelectrolytes do not dissociate into ions when in solution at all.
8 0
4 years ago
How is the star moving with respect to earth?
horsena [70]
Stars appear to be rising and setting, as well as the planets, Moon and the Sun. And with more precise instruments, we can see some stars appearing to move back and forth relative to other ones. ... Stars that are close to the Earth's axis of rotation—what we call the north and the south pole—rotate around the poles.
3 0
3 years ago
One mole of an ideal gas is expanded from a volume of 1.00 liter to a volume of 6.43 liters against a constant external pressure
Bingel [31]
We actually don't need the value for temperature. There is a direct formula relating work, pressure and volume. The relationship is:

W = Pexternal(ΔV)

Substituting the values and incorporating the conversion ratio,

W = (1 atm)(6.43 L - 1 L)(101.3 J/1 L·atm)
<em>W = 651.36 J</em>
7 0
3 years ago
Read 2 more answers
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