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C-N Bond Differences

How does the C-N bond in CN-1 differ from the C-H bond in CH4?

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Gas Compression

A 1 mol sample of ammonia gas (NH3) at 1 atm and 273 K is compressed to 2 atm. What is the difference in volume before and after compression?

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Photo attributed to Rudolf_Schuba.

Cyanide Ion

The cyanide ion has which of the following molecular geometries?

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Photo attributed to melburnian.

Molar Mass

If 45.1 grams of a solute is added to 302 grams of water to make a 0.65M solution, what is the molar mass of a solute?

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Lowest Penetrating Power

Which of the radioactive decay particles have the lowest penetrating power?

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Administering Nitrous Oxide

One of the tanks that a pediatric dentist uses to administer nitrous oxide is “empty”, meaning that the N2O inside is at the same temperature and pressure as the room. The ML-6 type cylinder has an internal volume of 165 liters. How many moles of nitrous oxide remain in the empty tank (Ideal gas constant = 0.082 L atm/K mol; assume the apparatus is at sea level; the ambient temperature is 22° C)?

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Photo attributed to Jurvetson.

Mg and Ar

In a reaction between Mg and Ar, which of the following is most likely to occur?

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Endothermic Chemical Reaction

Which of the following is at the highest energy during an endothermic chemical reaction?

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Valence Electron Configuration

Which of the following elements would contain the valence electron configuration 4s24p5?

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Boiling Point of Mixtures

Mixture A is formed using KCl and H2O and mixture B is formed using MgCl2 and H2O. If the two mixtures have the same molality, which of the following statements would be true about the boiling point of the mixtures?

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