6.1 seconds contain this many picoseconds.

Free Response Question B3:  Answer this on your paper in the area marked for Free Response Question B (Do NOT type your answer in Canvas) Describe the model of the atom proposed by Bohr.  You may use words or diagrams.  Include any improvements they made over the previous model and where the model was incorrect.  

For spring break you and some friends plan a road trip to a sunny destination that is 2105 miles away. If you drive a car that gets 33 miles per gallon and gas costs $3.199/gal, about how much will it cost to get to your destination?

What is the name for Ba(MnO4)2?

How many oxygen atoms are there in 4 formula units of Al2(CO3)3?

(Make sure you use subscripts correctly) What is the formula for lead (III) chlorite?

The formula of water, H2O, suggests:

Free Response Question C1:  Show your work for this on your paper in the area marked for Free Response Question C (Type your answer in Canvas) You car can go 38 mi/gal.  If you have $230 and gas is $3.22/gal, how many miles can you drive?

Consider the following choices when answering questions 86-89.Which best represents a homogeneous mixture of an element and a compound?

(Make sure you use subscripts correctly) What is the formula for nitric acid?