Mercury can be obtained by reacting mercury(II) sulfide with calcium oxide. How many grams of Mercury metal are produced when 2.11 g of calcium oxide reacts with excess mercury(II) sulfide? 4HgS+4CaO=4Hf+3CaS+CaSO4

a. 10.1 g
b. 1.80 g
c. 13.4 g
d. 7.56 g

Write the complete balanced equation for the reaction between lead (iv) oxide (pbo2) and water (h2o).

What’s a special glass that most beakers are made of

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.