Find mass of 2.5 moles of h20

Which of the following has the shortest half life? Carbon-14 Uranium-235 Uranium-238 Carbon-12

A rectangle or solid of unknown density is 5 m long two meter high and 4 meters wide The mass of the solid is 300 g what is the volume and density of this problem

An ion from a given element has 22 protons and 18 electrons. what is the charge on the ion?

In Thomson's plum pudding model the mass of the atom is in the A. electrons. B. matter between the electrons. C. nucleus. D. proton

Which molecule has a structure that is most like aspirin? propene octyne benzene butane

A gas held at constant volume is heated from - 5 ºC to 50 ºC, if the initial pressure is 1.0 atm, what is the new pressure the gas exerts?

Unknown element x is a metal that ionically bonds to sulfur. is the formula, x3s feasible? why or why not? a) it is feasible. the three metallic ions each receive an electron from sulfur. b) no, it is not feasible.

What is the difference between a period and a group on the periodic table

Oil flows upward in the wick of a lantern because of the liquid property called A. density. B. meniscusity. C. viscosity. D. capillarity.

What causes atomic radii to increase within a group on the periodic table?