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Natasha2012 [34]
3 years ago
7

Which statements about the equation shown above are correct? Check all that apply. It represents a reaction that involves rearra

ngement of atoms. It represents a reaction in which hydrogen nuclei and oxygen nuclei undergo change. It represents a reaction in which hydrogen electrons and oxygen electrons undergo change.
Chemistry
2 answers:
mezya [45]3 years ago
6 0

Answer: a and c

Explanation:

Oxana [17]3 years ago
5 0

Answer:

A and C on edge

Explanation:

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Stels [109]
Hello There!

The solution: salt water
Mix: Physical as you could still separate them

A chemical mix can't be reversed.

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All molecules have the same kinetic energy and hence the same speed.<br><br> O True<br><br> O False
topjm [15]
False...their speed differs
4 0
2 years ago
Why does increasing concentration usually increase reaction rate?
Alex Ar [27]
The correct answer is C) There are more particle collision

With more particle collision, more reactions are created.
3 0
3 years ago
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True or False: Electrons in each lower level are filled before electrons fill
ale4655 [162]

the answer is 1....true

5 0
3 years ago
A sample of an unknown compound with a mass of 0.847 g has the following composition: 50.51 % fluorine and 49.49 % iron. When th
sergejj [24]

Answer: 0,4278g of F and 0,4191g of Fe

Explanation: it's possible to calculate the mass of each element by multiplying the percentage (decimal) of the element by the mass of the compound.

For Fluorine (F)

0,847g * 0,5051 = 0,4278g of F

For iron (Fe)

0,847 * 0,4949 = 0,4191g of Fe

This is determined because even when the compound is decomposed, due to conservative law of mass, the decomposition process do not affect the amount of matter, so the mass of the elements remain even if they are separated from the original molecule.

At the end, the sum of the elements masses should be the total mass of the compound.

4 0
3 years ago
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