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Svetlanka [38]
3 years ago
15

1. How many Chromium atoms are found in 25.8 milligrams of Chromium?​

Chemistry
2 answers:
solong [7]3 years ago
8 0

Answer:

Chromium is a steel-gray, lustrous, hard metal that takes a high polish, is fusible with difficulty, and is resistant to corrosion and tarnishing.

The most common oxidation states of chromium are +2, +3, and +6, with +3 being the most stable. +4 and +5 are relatively rare. Chromium compounds of oxidation state 6 are powerful oxidants.ion:

givi [52]3 years ago
7 0

Answer: 51.9961 g/mol, don't know if it helps :)

Explanation:

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A student performs an experiment to determine the molar mass of magnesium oxide. The student repeats the experiment five times a
mestny [16]

Answer:

Percent relative error = 0.191%

Explanation:

Relative error is a measure of accuracy (How closeness is the measure to the accepted value) for a determined data. The formula is:

Percent relative error = |Experimental - Accepted| / Accepted * 100

<em>Where experimental is the average of the data:</em>

(40.220g/mol + 40.654g/mol + 40.314g/mol + 40.165g/mol + 40.554g/mol) / 5 =

40.381g/mol

Replacing using accepted value = 40.304g/mol:

|40.381g/mol - 40.304g/mol| / 40.304g/mol * 100

<h3>Percent relative error = 0.191%</h3>
5 0
3 years ago
Which planet is the most massive? A.Jupiter B.Mercury C.Venus D.Neptune
Ainat [17]

Jupiter is the biggest planet in are solar system

7 0
3 years ago
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Select all the statements that correctly describe a solution. Multiple select question.
motikmotik

Answer:

B, D, C

Explanation:

the solution may have more than one solute, a solution is a homogenous mixture of 2 or more substances and not all solutions are liquid

8 0
2 years ago
What changes occur in O + O = O2
ozzi

Answer:

They went from atoms to oxygen molecule.

Explanation:

I'm not sure if this is the answer your teacher is looking for, but in simple terms you had 2 oxygen atoms. Together they make an oxygen molecule, which is the stuff we breathe.

5 0
3 years ago
How to balance NH3+NO=N2+H2O
Kryger [21]

Explanation:

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3 0
1 year ago
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