Which one of the following substances has three unpaired d electrons? which one of the following substances has three unpaired d electrons? [cu(nh3)4]2+ [v(h2o)6]4+ [ag(nh3)2]+ [zn(nh3)4]2+ [cr(cn)6]3-

Express the following number in scientific notation. 0.026890 =

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?