1. Consider the following unbalanced equation: HCl + MnO2 → H2O +
MnCl2
+ Cl2
You have 5.00 g of manganese (IV) oxide.
a. Balance the equation
b. How many moles of manganese (IV) oxide do you have?
c. How many moles of HCl are required to completely react with the manganese (IV) oxide
you have?
d. How many grams of HCl is this?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?