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kvasek [131]
3 years ago
11

What is the pressure exerted by 3.00 mol of ar gas with a volume of 50.0 l at 25.0ºc (298.2 k)?

Chemistry
1 answer:
lord [1]3 years ago
6 0
U should use pv=nRT.. this is the gas equation

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g A and B are both non-volatile molecular compounds. Substance A has a greater molar mass than substance B. If 50 g of substance
Doss [256]

Answer:

The correct answer is - option D.  the boiling point of solution A will be lower than the boiling point of solution B

Explanation:

Colligative properties such as a decrease in the freezing point of the solution, increase in the boiling point of substance, decrease in Lowering of vapor pressure, and other properties depend upon the number of molecules only.

In the given solution the equal amount of two solutions are mixed that is 50 grams however due to the difference in the molecular mass so the atoms present in both solution A and B will be different. It is known that the number of atoms of a substance is inversely proportional to the molecular mass of the particular substance.

As it is given that Solution B has a low molecular mass which means it has a high number of atoms that means its boiling point will be higher than solution A.

8 0
2 years ago
Unknown # 41
sveta [45]

Answer:

KI

Explanation:

From the question, we can see that a qualitative analysis of the compound shows that it has a lilac flame colour. The lilac flame colour corresponds to the potassium ion (K^+).

Again, the test of addition of HNO3(aq) and AgNO3(aq) to a solution is a test for halogens. If the result is a green precipitate, then the ion present is the iodide ion (I^-).

Hence, the compound must be KI.

4 0
2 years ago
The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of urani
laila [671]
238_{U}



That is a capital U with the number 238 at upper left of the letter

5 0
3 years ago
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What can sd friction do to moving objects
melisa1 [442]
It can slow it down.
6 0
3 years ago
The correct formula for finding the relative velocity of an object is:
Ganezh [65]

Answer:

va/c = v a/b + v b/c

Explanation:

This is the correct formula for relative velocity

4 0
3 years ago
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