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just olya [345]
3 years ago
7

What is the percent oxygen in Rb2Cr2O7

Chemistry
2 answers:
blondinia [14]3 years ago
8 0

Answer:

28.9452

Explanation:

Bumek [7]3 years ago
7 0

Answer:

28.9452%

Explanation:

Rb-44.1781

Cr-26.8767

O-28.9452

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Can somebody please help me please?
Mrrafil [7]

Answer:

22 in total but round it up to 23

3 0
3 years ago
Prokaryotic cell division is a___________process involving onc chromosom.
Trava [24]

Answer:

It’s is a simple

Explanation:the prokaryotic cell involves a simple process which intern involves one chromosom

5 0
3 years ago
Two posssible lewis structures for the molecule ch2s are given. determine the formal charge on each atom in both structures
jok3333 [9.3K]

The formal charge on each atom can be known by counting up the number of valence electrons that is present on each atom.

<h3>What is Lewis structure?</h3>

The term Lewis structure is the representation of a compound using its symbols and showing the valence electrons as dots. This question is incomplete as the Lewis structures were not shown.

If it is shown, we can know the formal charge on each atom by counting up the number of valence electrons that is present on each atom.

Learn more about Lewis structure: brainly.com/question/4144781

8 0
2 years ago
What is the partial pressure of oxygen in a gas mixture that is 40% oxygen, 40% argon, and 20% helium, when the total pressure o
faltersainse [42]
The answer is: 400 mm Hg

Hope this helps!

Have a nice day. :)
6 0
3 years ago
7.26 of a hydrate, Cu(NO3)2.xH2O, formed 2.4 g copper(II) oxide.
goldfiish [28.3K]

Number of moles= mass/ molar mass

Or n=m/MM

n = number of moles

m = mass

MM = molar mass

1) n CuO = 2.4g / 79.54g/mol = 0.03 mol CuO

2) n Cu(NO3)2.xH2O = 7.26 g / 205.6 = 0.035 moles of Cu(NO3)2.xH2O

3) 205.6 g

Cu = 63.5 g

N = 14g

O =16g

H= 1 g

63.5+ (14+(16*3))*2+1*2+16 =205.6 g

4) yes is 188g

5) I don’t know, I assume was 1

6 0
4 years ago
Read 2 more answers
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