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pishuonlain [190]
2 years ago
14

What would be the most likely explanation if none of the tested paint samples had turned brown?

Chemistry
1 answer:
mariarad [96]2 years ago
7 0

Answer:4/d

Explanation:

i did this before

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Which statement correctly describes an atom of the element helium? (9)
Luden [163]

C. An atom of helium has its valence electrons in its first energy level, it wouldn't and can't satisfy the Octet rule as it only has 2 electrons, but with 2, it has a full shell, as the first energy level can hold only 2 electrons.

8 0
3 years ago
Suppose a solution is described as concentrated. Which of the following statements can be concluded? Select the correct answer b
Novosadov [1.4K]

Answer:

  • last option: none of<u> the above.</u>

Explanation:

Describing a solution as<em> concentrated</em> tells that the solution has a relative large concentration, but it is a qualitative description, not a quantitative one, so this does not tell really how concentrated the solution is. This is, the term concentrated is a kind of vague; it just lets you know that the solution is not very diluted, but, as said initially, that there is a relative large amount (concentration) of solute.

One conclusion, of course, is that <u>the solute is soluble</u>: else the solution were not concentrated.

On the other hand, the terms saturated and <em>supersaturated</em> to define a solution are specific.

A saturated solution has all the solute that certain amount of solvent can contain, at a given temperature. A <u>supersaturated solution has more solute dissolved than the saturated solution</u> at the same temperature; superstaturation is a very unstable condition.

From above, there is no way that you can conclude whether a solution is supersaturated or not from the statement that a solution is concentrated, so the answer is<u> none of the above</u>.

5 0
3 years ago
What is the mass of Ca(NO3)2?
Solnce55 [7]

Ca=40.07841 ,Nitrogen=14.006722 ,Oxygen15.99943
molar mass= (1xMW of Ca)+(2xMWof N)+(6x MW of oxygen)
Molar mass (molecular weight) of Ca(NO3)2 is 164.0884 g/mol


7 0
2 years ago
Which substance is a strong electrolyte?
zavuch27 [327]
Some are:

NH4Cl
KOH
HCl
6 0
3 years ago
HELP ME OUT PLEASE!!!!!!!!
34kurt

Answer:

49.979

Explanation:

4 0
2 years ago
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