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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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Dissolve In Water

Which of the following will not dissolve in water?

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The Molecular Formula

If an unknown compound is found to have an empirical formula of CH4, which of the following is the molecular formula if the molar mass was determined to be 128 g/mol?

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Final Oxidation Number

What is the final oxidation number of carbon in the following chemical reaction?

6CO2 + 6H2O -> C6H12O6 + 6O2

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Compound Boiling Point

Which of the following compounds would have the highest boiling point?

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Evaporative Cooling

Which of the following is an accurate explanation for evaporative cooling?

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Density of the Solid

If 7.000g of a solid displaced 21.0 mL of water when dropped into a graduated cylinder, what is the density of the solid?

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Ideal Gas Law

According to the ideal gas law at STP, which of the following is the value of the ratio between moles (assume 1 mole), the gas constant R, temperature and the pressure?

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