Write a balanced chemical equation for the reaction of zncl2 with excess naoh to produce na2zn(oh)4 sodium zincate. what mass of sodium zincate can be produced from 2.00 g of zncl2 with excess naoh by this reaction?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

What is the molar mass of a gas that has density of 2.054 g/l