Show:
Naming Compounds
Stoichiometry
Thermochemistry
Redox
Random
100

The chemical formula for the compound potassium oxide?

What is K2O
100
Balance the reaction Al + Cl2 ---> AlCl3
What is 2Al + 3Cl2 -->2AlCl3
100
What is the heat of formation of Be (s)?
What is 0
100
Which Fe has the largest oxidation number? a. Fe b. Fe2O3 c. Fe3O4
What is B
100
Give the concentration of each ion in the reaction Ca(NO3)2 = 0.25M
What is Ca = 0.25 M and NO3 = 0.50 M
200

Give the following ionic compound name for NiCO3

What is nickel (II) carbonate

200

Al + Cl2 --->AlCl3 Mix 100grams of Cl2 and 30grams Al What is the limiting reactant? (hint: to start is it balanced?; MM AlCl3= 133.34 g/mol MM Cl2= 70.90 g/mol)

What is Cl

200

State whether the following are endothermic or exothermic: a. A camp fire burning b. A reaction that feels cool to the touch c. H20 (g) ---> H2O(l)

What is a. Exothermic b. Endothermic c. Endothermic

200
What is being oxidized/reduced? Ag(+) + Cu ---> Ag + Cu(2+)
What is Ag being reduced and Cu being oxidized
200

Which light has a higher wavelength: Orange light or blue light?

Orange light

300

Give the chemical formula for iron (III) oxide

What is Fe2O3

300

Al + Cl2 --->AlCl3 Mix 100grams of Cl2 and 30grams Al How much AlCl3 can form? (hint: to start is it balanced?; MM AlCl3= 133.34 g/mol MM Cl2= 70.90 g/mol)

What is 125.4 grams?

300

Calculate the standard enthalpy change for the combustion of 1 mole of ethane C2H4 + 3O2 ---> 2 CO2 + 2 H2) given the following standard molar enthalpies of formation molecule: DH(kJ/mol) CO2 -393.5 H20 -241.8 C2H4 +52.5 kJ

What is -1323 kJ/mol

300
Write the ionic equation for the following reaction: BaCl2 + Na2SO4 ---> BaSO4 + 2 NaCl
What is Ba(2+) + 2Cl(-) + 2Na(+) + SO4(-2) ---> BaSO4 + 2 Na(+) + 2Cl(-)
300

In setting up a saltwater aquarium, you need an aqueous solution that has a calcium hydroxide concentration of 0.0225 M. How many grams of Ca(OH)2 do you need to make 500.0 mL of the aqueous solution?

What is .8325 grams

400
You react lead with sulfate: write the chemical formula for this
What is PbSO4
400

DAILY DOUBLE!!! 

2 NaOH + H2SO4 --->Na2SO4 + 2 H2O 

25 mL of an unknown molarity of H2SO4  is added to 23.65mL of .124M NaOH. Find the molarity of H2SO4 .

What is .0587M

400

DAILY DOUBLE!!! How much heat is needed to convert 54.0 g of liquid H2O at 20.0C to steam at 100.0 C? (c = 4.185 J/gC,  Lv = 2,260 J/g)

What is 140,000 J or 140 kJ


400
Write the net ionic equation for the following reaction: BaCl2 + Na2SO4 ---> BaSO4 + 2 NaCl
What is Ba(2+) + SO4(2-) ---> BaSO4
400

What is the title of the chapter we just finished?

What is Thermodyanamics

500

Write the following polyatomic ions with the correct ion charge: nitrate phosphate sulfate

What is NO3(-1) PO4(-3) SO4(2-)

500

Al + Cl2 --->AlCl3 Mix 100grams of Cl2 and 30grams Al How much reactant is left? (hint: to start is it balanced?; MM AlCl3= 133.34 g/mol MM Cl2= 70.90 g/mol)

What is 4.6 grams Al?

500

The forming of a bond is a) an exothermic process that releases heat b) an endothermic process that absorbs heat c) either exothermic or endothermic depending on the bond

What is B

500
For the following reaction, what is being oxidized and reduced? 2 NaI + 2 H2SO4 + MnO2 --> Na2SO4 + MnSO4 + I2 + 2 H2O For an extra 200 points, what are the oxidizing and reducing agents?
What is oxidized: I reduced: Mn oxidizing agent: Mn reducing agent: I
500

Calculate the energy of light that has a wavelength of 283 nm.

What is 7.02 x 10-19 J?