Tag Archives: chemistry

Tough Like A Diamond

The hardest substance known is diamond. Which best describes the structure of diamond?

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Nucleus Therapy

Which of the following is the process by which an unstable nucleus is transformed into a more stable nucleus with lower energy?

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Charge of Iron

Which of the following is the charge of iron in the compound, Fe(SO4)2?

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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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Cyanide Ion

The cyanide ion has which of the following molecular geometries?

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Photo attributed to melburnian.

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.

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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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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Dissolve In Water

Which of the following will not dissolve in water?

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