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Pure Covalent Bond

Which of the following molecules has a bond that is nearest to a pure covalent bond?

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Photo attributed to Rudolf_Schuba.

Total Pressure in Container

For a mixture of gases in a container, the total pressure is equal to __________ because of what law?

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Enthalpy of a Gas

The enthalpy of a system of gas is dependent on which of the following?

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Tough Like A Diamond

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

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Calcium Hydroxide

The solubility of calcium hydroxide (Ca(OH)2) is given as:

The solubility is a factor of total hydroxide ion in the solution and the solvent hydroxide concentration. The solvent is the liquid in which the calcium hydroxide is dissolved. Which of the following would increase the solubility of calcium hydroxide?

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Aqueous Equation

Consider the following aqueous equation:

6 NaI + Ca3(PO4)2 -> 2 Na3PO4 + 3 CaI2

If 14 moles of NaI, 8 moles of Ca3(PO4)2, and 6 moles of Na3PO4 are present in a mixture, which one of the following compounds would determine the amount of CaI2 that was produced after 2 hours?

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Chemistry Comparisons

When comparing 18O and O-2, which of the following is true?

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Consider the Base

In the reaction between NH4+ and NO3, which of the following would be considered the base?

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Conjugate Base

The conjugate base of HSO4 is which of the following?

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Buffer Solution

The pH of 1 Molar acetic acid is 2.4. By adding sodium acetate, NaCH3COO to the acetic acid a buffer solution is formed. Which statement best describes what occurs in the buffer solution?

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