When an aqueous solution at room temperature is analyzed, the [H+] is found to be 2.0 * 10-3 M. What is the [OH-]?

A. 5.0 * 10-12 M

B. 2.0 * 10-11 M

C. 4.0 * 10-6 M

D. 5.0 * 10-11 M

Determine the mass of copper that has the same number of atoms as there are in 6.95 mg of potassium. Answer in units of mg.

What is calculated by dividing mass volume

What dissolves faster regular or suger free mints

An unknown radioactive substance has a half-life of 3.20 hours. If 16.5 g of the substance is currently present, what mass A0 was present 8.00 hours ago

What is the most common salt found in ocean water?

What does ice cream melt on a hot day which type of thermal energy transfer does this melting represents

For which purpose do biochemists insert human genes into bacteria? to find a cure for the common cold to produce insulin for diabetics to kill resistant strains of bacteria to evolve certain species of bacteria

Cracks in rocks chemical or mechanical

A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins. A) 0.5 sec B) 0.3 sec C) 2.3 sec D) 1.9 sec

Given 4.80g of ammonium carbonate, find: Number of moles of the compound Number of moles of ammonium ions Number of moles of carbonate ions Number of moles of hydrogen atoms Number of hydrogen atoms