Chapter 1-3

Dimensional analysis

100

How many cm are in one meter? 

How many mL are in one Liter? 

100cm/m

1,000mL/L

200

The total amount of freshwater on earth is estimated to be 3.738 x 10⁸ km3. What is the volume in cubic meters?

3.738E17 m³

300

How many grams are there in 3.58 short tons, with correct sig figs?

Note that 1g=0.03527oz, 1lb=16oz, and 1 short ton=2000lb

3.25E6 g

400

How many moles of electrons are in 5mg of N^-? Assume the molar mass of N^- is 14.01g/mol

2.86e-3 mols of e^-

mg*(g/mg)*(mol/g)*(mol of e^-/mol of N^-)

SIG FIGS

0

chapter 1; Explain the difference between physical and chemical changes 

 Same substance after the change vs new substance formed. 

100

How many significant figures are in 0.097080

5

200

The circumference of the earth at the equator is 40,000 km. This value is precise to two significant figures. Write this in scientific notation to correctly express the number of significant figures.

4.0E4 km

300

(8.4 - 6.45) + (9.272 x 7.3)

70., 2 significant figure

400

(50120.*0.00059245)+ 9.993

39.693 5 sig figs

chapter 1

0

How would you go from atoms of one substance to moles of another molecule 

using mole ratio and Avogadro's number 

100

is O₂ an atom or molecule

Molecule

200

label the picture as solid, gas or liquid 

1- liquid

2- solid

3-gas

300

determine the state of the substance based on the information given; this substance has no shape but does have volume.  it is slightly compressible and the atoms can move somewhat. 

Liquid 

400

Name the SI unit for two properties 

mass; kg

length; m

volume;m³

temp; K

time; s

chapter 2

0

 800 pt- Find the empirical and chemical formula for a substance (C_xH_YO_z) with 75.44%=O; 1.90%H. Finally, state the n integer for the molecular formula if the molecular formula has a molar mass of 212.08g/mol.

C₂H₂O₅

n=2

C₄H₄O₁₀

100

Name the atom that has  15 protons

P

200

An atom has 25 electrons and is a cation of 2+. This atom also has 29 neutrons. What is the atomic symbol in the following form _x^yZ^q.

⁵⁶₂₇Co²⁺

300

Determine the number of protons, electrons, and neutrons in ¹⁸C⁴⁺

p⁺-6

e^--2

n^o-12

400

There are 27 grams of carbon. Carbon has an atomic mass of 12.01 amu with two isotopes of carbon 13 and carbon 12. The mass of carbon 12 is 12.001 and carbon 13 has a mass of 13.00. what is the mass percent of carbon 13? 

0.9009%

chapter 3

100

Provide the name for the following compound FeO

Iron (II) Oxide

200

write the formula for chloric acid 

HClO₃

300

Name the empirical for C₆H₉N₃O₃

C₂H₃NO

400

state the difference between hydrochloric acid and chloric acid

HCl and HClO₃