Consider the following list of liquids and their boiling points: ether, bp = 35°c acetone, bp = 56°c cyclohexane, bp = 80°c water, bp = 100°c which liquid is predicted to have the largest vapor pressure near room temperature (25° c)? a. acetone b. ether c. cyclohexane d. cannot tell with the information given e. water

For each of the following mixtures decide if filtering would be suitable to separate the substances. explain your answers. oil in water sugar in water sand in water chalk in water tea leaves in a cup of tea

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

What is the molar mass of a gas that has density of 2.054 g/l