Which of the following elements has its highest energy electrons in an "s" atomic orbital? radiium (Ra) neon (Ne) aluminum (Al) lanthanum (La)

If a solution A has twice as much solute as solution B. Is it possible for the solutions to have the same concentration?

A mixture of two compounds, a and b, was separated by extraction. after the compounds were dried, their masses were found to be: 105 mg of compound a and 91 mg of compound b. both compounds were recrystallized and weighed again.

Write the Ka expression for an aqueous solution of hydrofluoric acid: (Note that either the numerator or denominator may contain more than one chemical species.

A solid reactant is placed into a beaker of warm water. The liquid vigorously bubbles as the soild dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced

What is the name of the compound CrPO4 • 5H2O?

Cobalt chloride hexahydrate has a formula weight of 237.9 g/mol. how much would you use to make 0.5 liter of a 0.3 m solution?

Describe what happens when you take a antacid

According to Table F, which compound is soluble in water? (1) barium phosphate (3) silver iodide (2) calcium sulfate (4) sodium perchlorate

The temperature of a liquid is 75k what is the temperature im celsius

Balance this equation- Na3PO4 + KOH - > NaOH + K3PO4