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kobusy [5.1K]
2 years ago
11

Magnesium oxide (MgO) is a compound found in antacids, that treats heartburn and indigestion. How many atoms are in 12.34 moles

of magnesium oxide?
*Please try to show work - I'm confused on this one!*
Chemistry
1 answer:
Alborosie2 years ago
4 0

Explanation:

number of particles or atom = number of moles × Avogadro's number

number of atoms = 12.34 × 6.02 × 10^23

= 7.43 × 10^24 atoms

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Use Gay-Lussac Law to solve. When the pressure of a balloon starts at 7.5 atm and the temperature surrounding the balloon goes f
ElenaW [278]

Answer:

The answer to your question is 6.77 atm

Explanation:

Data

Pressure 1 = P1 = 7.5 atm

Temperature 1 = T1 = 65°C

Pressure 2 = P2 = ?

Temperature 2 = T2 = 32°C

Process

-Use Gay-Lussac law to solve this problem

               P1/T1 = P2/T2

-Solve for P2

               P2 = P1T2 / T1

-Convert temperature to °K

T1 = 65 + 273 = 338°K

T2 = 32 + 273 = 305°K

-Substitution

                P2 = (7.5 x 305) / 338

-Simplification

                P2 = 2287.5 / 338

-Result

                P2 = 6.77 atm

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How is scientific observation done properly and safely using laboratory equipment?
FrozenT [24]
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3 years ago
Which step would help a student find the molecular formula of a compound from the empirical formula
JulsSmile [24]
Find the mass of the empirical formula.
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It would be clearer if we were working from some choices.
5 0
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Based on the Valence Shell Electron Pair Repulsion Theory (or VSEPR), molecules will arrange to keep the following as far apart
elena55 [62]

Answer:

B. Valence Electron Pairs

Explanation:

Valence-shell electron-pair repulsion, or VSEPR, describes the shape of molecules by determining the repulsion of valence electrons. Therefore, our answer is B.

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Brilliant_brown [7]
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7 0
3 years ago
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