CHEM 130 Review

Chapter 1: Chemical Foundations

100

Unit conversions: Convert 1325 mL to L.

1.325 L

200

Give the number of significant figures: A chemist records a mass of 0.050080 g in an analysis.

5 sig figs

300

Calculate and give the result with the correct number of sig figs: 21 - 13.8

7

400

One mole is equal to ___ atoms

6.022x10^23 atoms

500

The conditions at STP are:

Temp: 0 Celcius, 273.15K

Pressure: 1 atm=760 torr=101.3kPa

Nomenclature & Stoichiometry

100

What is the formula to find molarity?

molarity= mol solute / L solution

200

Give the name for the compound: Na2SO4

Sodium Sulfate

300

What is the difference between a solute and solvent?

solute- the substance (has less of)

solvent- the liquid the solute dissolves in (has majority)

400

State the formula for Iodine heptafluoride

IF7

500

State the chemical formula for Iron III carbonate

Fe2(CO3)3

Acid-Base Reactions

100

True or False: An acid is a proton acceptor and a base is a proton donor.

False. Acids are proton donors, bases are proton acceptors. 

200

Name 4 Strong Bases

Any of the following:

LiOH, NaOH, KOH, Ca(OH)2, Sr(OH)2, Ba(OH)2

300

Name 5 strong acids

Any of the following:

HCl, HBr, H2SO4, HNO3, HI, HClO4, HClO3

400

A strong acid is one that is completely __________

Dissociates

500

Acids get stronger as....

Conjugate bases get weaker

Thermochemistry

100

True or False: Energy is the capacity to do work or produce heat.

True

200

Is the reaction endothermic or exothermic?

N₂(g) + O₂(g) + energy (heat) --> 2NO(g)

Endothermic.

300

The specific heat of water (with units) is ______

4.186 J/g°C

400

A system wherein the exchange of energy and matter takes place with the environment is called a(n): 

Open system

500

If a reaction is exothermic, what does ΔH have to be? 

ΔH<0 (negative).

Equations

100

Name the 5 reaction methods:

Synthesis, Decomposition, Single Displacement, Double Displacement, Combustion

200

In the equation; C5H12 + 8O2 = 5CO2 + 6H2O What is the number of moles of CO2 can be made if you start out with 16 moles of oxygen gas?

10 Moles of CO2

300

When the following is balanced: __Al + __Fe3O4 ---> ___Al2O3 + ___Fe The value in front of Al is: 

8

400

In the equation; ___SnO2 + ___H2 --> ___ Sn + ___H2O You have 36 g of SnO2 and 36 g of H2. Find the limiting reactant.

SnO2

500

What rules do you use to know if a double replacent reaction occurs AND how does the rules work?

Solubilty rules, in order to have a reaction one of the products must be a solid