Chemical reactions -

a. produce new substances.

b. create and destroy atoms.

c. occur only in living organisms.

d. only occur outside living organisms.

How many grams of CaOH2 are in this solution? The molar mass of CaOH2 is 58.093 g/mol. (0.0787 mol CaOH2) (58.093 g/mol) = g CaOH2

Hard water often contains dissolved Ca2 + and Mg2 + ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions, removing them from solution. Suppose that a solution is 5.

14. What are 2 properties of CO2?

If 15 g of kclo3 are stirred into 200 g of water at 25 c, how much of the kclo3 will dissolve? is the solution saturated, unsaturated, or supersaturated?

2. You used a calorimeter in the Heat Transfer lab. Explain how the calorimeter works, and how to calculate the heat given off or absorbed by the reaction being studied.

What do you need in order to do a stoichiometric calculation? (Choose multiple) Balanced Chemical Equation Molar masses of compounds involved The type of reaction taking place Oxidation Numbers

The correct mathematical expression for finding the molar solubility (s) of sn (oh) 2 is:

18. which bond is most polar? H--F H--Cl H--Br H--I

What kind of reaction is ca (s) + h3po4 (aq) ca3 (po4) 2 (s) + h2 (g)

In the teapot dome scandal, what did the secretary of the interior albert fall lease