The number of moles of hydrogen that is needed to produce 0.253 mol of water is a) smaller than 0.253 mol. b) much greater than 0.253 mol. c) slightly greater than 0.253 mol. d) equal to 0.253 mol.

Classify each statement about effective nuclear charge, zeff, as true or false.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.