Chem 105 SI :)

Prefix

100

kilo

10³

200

micro

10^-6

300

mega

10⁶

400

nano

10^-9

500

pico

10^-12

Ions

100

How many protons in Cl-?

17

200

How many electrons in Cd2+?

46

300

How many electrons in Pb4+?

78

400

What is the charge on the silver ion in AgNO₃?

1+

500

What is the charge on the copper ion in CuCl₂?

2+

Conversion

100

Convert 50.7 L to kL

0.0507 kL

200

Convert one million seconds to years.

0.032 years

300

What is the mass of 3.987 mol of Al?

107.6g Al

400

Calculate the mass of 3.00 moles of calcium chloride (CaCl₂).

333 g CaCl₂

500

How many moles are present in 100 L of Al? 

**Density of Aluminum: 2.7 g/cm³ **

10³ moles Al

Miscellaneous

100

milli

10³

200

When is our first exam?

Next Friday!

300

True or False:

Compounds of SO₄^2– are insoluble except those of Ca2+, Sr2+, Ba2+ and Pb2+.

False

Compounds of SO₄^2– are SOLUBLE except those of Ca2+, Sr2+, Ba2+ and Pb2+.

400

How many moles are present in 108 grams of water?

5.99 mol H₂O

500

Name the element and its number on the periodic table:

Al

Aluminum (13)

Polyatomic Ions

100

Give the chemical formula for nitrate

NO₃^-

200

Chemical formula for sulfate and phosphate

SO₄^2-

PO₄^3-

300

Chemical formula for ammonium

NH₄⁺

400

Chemical formula for carbonate

CO₃^2-

500

Chemical formula for chlorate ion

ClO₃^-