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Roman55 [17]
3 years ago
8

A gas cylinder contains exactly 15 moles of oxygen gas (O2) how many molecules of oxygen are in a cylinder

Chemistry
2 answers:
butalik [34]3 years ago
8 0
When you say mhello les do uou mean moecules
Tanzania [10]3 years ago
3 0
The answer is 9.03 × 1024<span> molecules hope it helps.</span>
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which person possessed the expeirence and to be commander in chief and continental army, in John Adams opinion?
sasho [114]
George Washington is your answer


Hope this helps!
6 0
3 years ago
gThe mole fraction of potassium nitrate in an aqueous solution is 0.0194. The solution's density is 1.0627 g/mL. What is the mol
xxMikexx [17]

Answer:

0.595 M

Explanation:

The number of moles of water in 1L = 1000g/18g/mol = 55.6 moles of water.

Mole fraction = number of moles of KNO3/number of moles of KNO3 + number of moles of water

0.0194 = x/x + 55.6

0.0194(x + 55.6) = x

0.0194x + 1.08 = x

x - 0.0194x = 1.08

0.9806x= 1.08

x= 1.08/0.9806

x= 1.1 moles of KNO3

Mole fraction of water= 55.6/1.1 + 55.6 = 0.981

If

xA= mole fraction of solvent

xB= mole fraction of solute

nA= number of moles of solvent

nB = number of moles of solute

MA= molar mass of solvent

MB = molar mass of solute

d= density of solution

Molarity = xBd × 1000/xAMA ×xBMB

Molarity= 0.0194 × 1.0627 × 1000/0.981 × 18 × 0.0194×101

Molarity= 20.6/34.6

Molarity of KNO3= 0.595 M

8 0
3 years ago
Lyle filled a glass bottle completely with water. He put the lid on tightly, then put the water in the freezer to cool it down q
svlad2 [7]

Answer:

The answer would be  It breaks them up.

Explanation:

7 0
2 years ago
As Matter Changes States of matter does chemical composition stay the same or not
geniusboy [140]
Whether water is frozen, in a gaseous state, or is a liquid, it is still H2O. So the chemical composition does stay the same.
6 0
3 years ago
The last group on the periodic table is called the noble gases. The elements in this group are
Anni [7]

Answer:

C

Explanation:

They are stabil and full of valence electron.

6 0
3 years ago
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