Author Question: Another interesting periodic trend is the density of the elements. We find that osmium, Os ... (Read 65 times)

Sufayan.ah · **on:** Aug 27, 2018

Another interesting periodic trend is the density of the elements.

We find that osmium, Os (atomic number 76 ) has the greatest density of all elements, and, with some exceptions, the closer an element is positioned to osmium, the greater its density. Based upon this trend, list the following elements in order of increasing density: copper, Cu, gold, Au, platinum, Pt, and silver, Ag. A) copper, Cu < gold, Au < platinum, Pt < silver, Ag
B) copper, Cu < silver, Ag < gold, Au < platinum, Pt
C) copper, Cu < silver, Ag < platinum, Pt < gold, Au
D) platinum, Pt < gold, Au < silver, Ag < copper, Cu

Question 2

If Earth's oceans were fresh water, would fluctuations in global temperatures be more or less pronounced?

A) If the oceans were fresh water, fluctuations in global temperatures would be much more pronounced as can be witnessed by the melting of the polar ice caps to fresh water.
B) If the oceans were fresh water, the oceans' specific heats would be greater and this would help towards moderating global temperatures.
C) Fluctuations in global temperatures are not dependent on the ocean being salt water rather than fresh water.
D) If the oceans were fresh water, both their densities and specific heats would decrease, thus having a more pronounced effect on fluctuations in global temperatures.