Answer:
4.1 x 10^-4 mol/L
Explanation:
For the equation
FeF2(s) --> Fe2+(aq) + 2F- (aq)
We have that for every mole of FeF2 we have a mole of Fe2+ and 2 moles of F-
FeF2(s) --> Fe2+(aq) + 2F- (aq)
1 1 2
If we have 2.05 x 10^-4 moles of Fe2+
FeF2(s) --> Fe2+(aq) + 2F- (aq)
2.05 x 10^-4 2 x 2.05 x 10^-4
2 x 2.05 X 10^-4 = 5.1 x 10^-4 moles
So if in the solution is measured 2.05 x 10^-4 mol/L of [Fe2+] we have 5.1 x 10^-4 mol/L of [F-]
Translation:
In 1500 kg of air there are 0.8 carbon dioxide. How many ppm does the carbon dioxide sample correspond to?
Explanation:
Given parameters:
Mass of air = 1500kg
Mass of carbon dioxide= 0.8g
Unknown:
PPM of carbon dioxide in the sample = ?
SOLUTION :
The parts per million ppm is used to express dilute concentration of solutes. It simple means out of a million.
To express the answer in ppm, first convert into uniform units:
1500kg to g = ?
1kg = 1000g
1500kg = (1500 x 1000)g = 1500000g
To express as part per million:
x 1000000
x 1000000 = 0.533ppm
Learn more:
Parts per million brainly.com/question/2854033
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Answer:
a) Fe
b) Fe
c) Fe
Explanation:
When using their stoichiometric ratios, in all of the the iron will run out before the oxygen, making the iron the limiting reactant.
Answer:
I promise it is the 2nd one
Explanation:
The following diagram shows a stage of a cell during mitosis. <u>Two identical circles are joined in the middle</u> and they have the nucleolus inside the nucleus in the center of the circles.