Scientific Notation
Conversions
Density
Isotopes
Cations and Anions
100

0.001332

1.332 x 10-3

100

116oF to oC

46.7

100

A lead cylinder has a mass of 540 grams and a density of 2.70 g/ml.  Calculate the volume of the lead cylinder.

200

100

15N

Nitrogen-15

100

Iron(II)

Cation Ion +2

200

9.3 x 107

93,000,000

200

25oC to oK

298

200

A thin glass bottle holds 25 ml of liquid and has a mass of 19 grams.  Calculate the density.

.76

200

25Mg

Magnesium-25

200

Magnesium

Cation +2

300

7.53 x 10-10

0.000000000753

300
You are preparing to give Mr. Hamptou his Lopressor 100mg PO daily as prescribed. The pharmacy sends up Lipitor 50-mg tablets. How many tablets do you give Mr. Hamptou?

You do not give any because the pharmacy gave you the wrong medication

300

 A platinum bar measures 5.0 cm long, 4.0 cm wide, and 1.5 cm thick.  It has a mass of 700.0 grams.

a) calculate volume

b) calculate density

v=30

d=23.3

300

49Ti

Titanium-49

300

Chromium (III)

Cation +3

400

(4 x 10-7)x(7 x 105)

2.8 x 1010

400

Prescription: Lamivudine 30mg by mouth. Given: Lamivudine oral solution = 10mg/mL. How much will you give?

3mL

400

 A pencil has a density of .875 g/ml.  It has a mass of 3.5 grams.  What is the volume?  

4mL

400

53Cr

Chromium-53

400

Chlorine

Anion -1

500

(4 x 10-7)x(3.25 x 109)

13 x 102

500

10yo Seraphima ate some peanuts about 5 minutes ago; she is allergic to nuts. She came to the Emergency Department with hives. The nurse practitioner prescribed Benadryl 25mg intravenously now. The pharmacy dispenses a vial of Benadryl at 50mg/mL for IM or IV use. How much Benadryl do you draw up to administer to Seraphima?

0.5mL

500

You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density?

3

500

197Au

Gold-197

500

Selenium

Anion -2