PLEASE HELP ITS URGENT AND ILL GIVE BRAINLIEST 9. write the complete balanced equation for the reaction that occurs when aluminum phosphate (AIPO4) reacts with magnesium chloride
(MgClz) in an aqueous solution. (3 points)

Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Sulfuric acid is a polyprotic acid. write balanced chemical equations for the sequence of reactions that sulfuric acid can undergo when it's dissolved in water.