a solid x when heated gives up a brown gas. If x is soluble in excess sodium hydroxide solution but insoluble in excess ammonium hydroxide solition. What is X?

What combination of processes can transform a metamorphic rock to sediments?

Is the hight of a basketball ball hoop negative value

What are two ways that nonmetallic minerals can be used? A. industrial process and gems B. conductors and for industrial processes C. wiring and gems D. gems and as conductors

A placebo is a substance that is unlikely to affect the dependent variable. a. True b. False

Calculate the concentration of oxalate ion (c2o42-) in a 0.175 m solution of oxalic acid (c2h2o4). [for oxalic acid, ka1 = 6.5 * 10-2, ka2 = 6.1 * 10-5.]

What problem would unlimited cell growth pose for a cell

Complete the following analogy. Homogeneous is to soluble particles as heterogeneous is to A. solute particles. B. solvent particles. C. insoluble particles.

Water vapor will condense, turn into a liquid, first on the outside surface of which glass

How many moles of oxygen are needed to make 6.50 moles of magnesium oxide?

Which of the following happens during a chemical change? Check all of the boxes that apply. One atom or more changes into atoms of another element. New substances with different properties are formed. Solids, liquids, or gases may form.