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Aleksandr-060686 [28]
1 year ago
8

What is the percent oxygen in something made of 2 mole of copper and 1 mole of oxygen called copper (l) oxide?

Chemistry
1 answer:
Lady_Fox [76]1 year ago
8 0

Answer:

20.114%

Explanation:

Percent composition by element Element Symbol Mass Percent Copper Cu 79.886% Oxygen O 20.114%

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5 0
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Plsss help i’ll give brainlist
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Explanation:

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Hich statement describes the process of fusion, but not the process of fission?
lesantik [10]

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4 0
3 years ago
Lysine is an amino acid that is an essential part of nutrition but which is not synthesized by the human body. What is the molar
nata0808 [166]

Answer:

The molar mass of lysine using the ideal gas equation for this problem is 146.25 g/mole.

Explanation:

The ideal gas equation PV = nRT, was derived from the ABC laws (Avogadros, Boyles and Charles laws). We need to obtain the value for the number of moles n.

The parameters of this equation are:

P = 1.918 atm

V = 750.0mL = 0.75L

n = ?

R = 0.0821

T = 25 degree celcius = 25 + 273 = 298 degree kelvin.

From this formular, n = (PV)/(RT)

n = (1.918 X 0.75)/(0.0821 X 298 )

n = 0.0588

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MM = 8.6/0.0588

MM = 146.25g/mole.

4 0
3 years ago
Read 2 more answers
Calculate the amount of solute needed for 1000 ml of 15% sodium thiosulfate
maksim [4K]
15% =  15 grams of solute in 100 mL solution

15 g --------------- 100 mL
?? ------------------ 1000 mL

1000 x 15 / 100 = 

15000 / 100 => 150 g of solute

hope this helps!
7 0
3 years ago
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