Tag Archives: chemistry

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?

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




Lowest Penetrating Power

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

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




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)?

Loading ... Loading ...

Subscribe below to receive the DAT Question of the Day delivered straight to your inbox every morning.




Photo attributed to Jurvetson.

Mg and Ar

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

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




Endothermic Chemical Reaction

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

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




Valence Electron Configuration

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

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




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?

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




Dissolve In Water

Which of the following will not dissolve in water?

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




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?

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.




Degrees of Unsaturation

How many degrees of unsaturation are present in the anxiolytic drug Valium (diazepam), molecular formula C16H13ClN2O?

Loading ... Loading ...

Subscribe below to get the DAT Question of the Day delivered straight to your inbox every morning.