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Taya2010 [7]
3 years ago
9

8.08 x 1022 atoms of krypton PLEASE

Chemistry
1 answer:
irinina [24]3 years ago
8 0

Answer:

8.08 x 10^22 atoms/1 = 1 mol/6.02 x 10^23 atoms

Thank you much!

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A standard galvanic cell is constructed so that the overall cell reaction is as given below where M is an unknown metal. 2 Al3+(
jasenka [17]

Answer:

magnesium metal

Explanation:

According to the redox reaction equation, six electrons were transferred hence n=6 and F= Faraday's constant 96500C. ∆G° is given hence E°cell can easily be calculated as follows:

From ∆G°= -nFE°cell

E°cell= -∆G°/nF= -(-411×10^3/96500×6)

E°cell= 0.7098V

But for Al3+(aq)/Al(s) half cell, E°= -1.66V from standard table of reduction potentials.

E°cell= E°cathode- E°anode but Al3+(aq)/Al(s) half cell is the cathode

Hence

E°anode=E°cathode - E°cell

E°anode= -1.66-0.7098= -2.37V

This is the reduction potential of Mg hence the anode material was magnesium metal

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3 years ago
If the density of methanol is 0.791g/ml, what is the mass of 0.750L of methanol
Anestetic [448]

Explanation:

d =  \frac{m}{v}  \\ m = d \times v \\ m = 0.791 \times 750 \\ m = 593.25 \:  g

3 0
3 years ago
The skeletal structure in line‑angle (line‑bond) mode of 2‑isopropyltoluene is shown. Identify the number of hydrogen atoms boun
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Answer:

Fourteen hydrogen atoms are bounded in total to the carbon atoms in the structure

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The boxes that show "one" indicate that there is only one hydrogen atom bonded to that particular carbon atom while those that show "zero" shows there are no hydrogen atoms bonded to that particular carbon atom. Those that show "three" indicate that there are three hydrogen atoms bonded to that particular carbon.

There are 10 carbon atoms in the structure.

NOTE that each of these carbon atoms must be surrounded with four bonds; which was how the number of hydrogen atoms (numbers in the boxes) weree determined.

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D is the only choice here that is appropriate given neutrons' lack of charge
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