Chemistry final

Unit 1

100

Transform 15.7 mL to cL

1.57 cL

200

Transform 320.75 hm to m 

3207.5 m 

300

Transform 0.12345 ks to s 

123.45 s 

400

Name a physical change that ice could go through 

ice melting 

500

how many significant figures are in 2.156x3.5

4

Unit 2

100

Are non metals dull or shiny 

Dull 

200

How many orbitals in the 1s subshell 

1

300

The half life of a radioactive isotope is 25 days, if you start with 40 grams of the isotope how much will you have after 75 days 

5 grams 

400

what is the electron configuration for carbon 

1s2 , 2s2, 2p2

500

What is the total mass of the product 10n + 23592U + 14156Ba + 9236Kr + 3 10n

236 amu 

Unit 3

100

What element has the sub script Lr

Lawrencium 

200

What charge are cations 

positive charge 

300

How many electrons in a full lewis structure 

8 electrons 

400

What is the charge for sulfate (SO4)

-2

500

Name this compound C2H402

DiCarbonTetraHydroDiOxide