Spring Break Recap

Is it Aqueous?

100

what is the rule for compounds containing nitrates

always soluble, aqueous

200

Mercury (II) nitrate

Hg(NO₃)₂

soluble

300

Barium sulfate

Ba(SO₄) 

insoluble

400

Ammonium chloride

NH₄Cl

soluble

500

Write the total ionic and net ionic reaction for: 

Barium nitrate reacts with Sodium sulfate

net: 

Ba⁺²(aq) + SO₄^-2(aq) ---> BaSO4 (s)

Molarity

100

what is the formula for molarity and units (the triangle thing)

triangle thing :)

200

Lead (II) nitrate is used in the manufacturing of matches and special explosives. If 721 mL of a 0.122 M Lead (II) nitrate solution is mixed with 529 mL of a 0.33 M potassium iodide solution, how many grams of precipitate can be produces?

37.2 g PbI₂

_{40.24 g}

300

If a chemist dissolves 84.5 g of calcium chloride in 765.3 mL of water, what would would be the molar concentration of chloride ions? 

1.98 M Cl

400

Suppose 15 g of nickel (II) bromide is dissolved in of an aqueous solution of 50 mL of 1.6 M potassium carbonate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesnt change when the nickel (II) bromide ion is dissolved in it 

2.76  M Br -

500

Assume 215 mL of 1.45 M cadmium sulfate solution and a 48.1 mL solution containing an unknown concentration of potassium sulfide are mixed in a beaker. 

Provide total ionic and net ionic equations for the reaction that takes place 

If the mixing produces 53.2 g of precipitate what is the concentration of the potassium sulfide solution producing this result

Cd⁺² (aq) + S^-2 (aq) --> CdS (s)

7.7 M potassium sulfide

Redox

100

what are we looking for in a redox reaction?

Transfer of electrons:

- Loss of electrons, Oxidation

- Gain of electrons, Reduction

200

Give Redox numbers for: 

Aluminium Sulfate 

Iron (III) oxide

Rubidium sulfite

Al:+3 , S:+6, O:-2

Fe:+3 , O:-2

Rb: +1, S: +4, O: -2

300

Copper metal reacts with aqueous silver nitrate to produce silver metal and copper (II) nitrate. Give oxidation numbers and write half reactions.

Cu: 0, Ag: +1, N:+5, O:-2, 

Ag: 0, Cu: +2, N:+5, O: -2

Oxidized Cu 0 --> Cu +2 + 2e-

Reduced: 2Ag +2e- --> 2Ag 0

400

Give a real life example of redox

iron rusting

combustion reactions

reaction of water

500

Define OIL RIG

Oxidation is loss of electrons, becoming more positive

Reduction is gain of electrons, becoming more negative

Gas laws

100

From the combined gas law, show how you can get all other gas laws

P1V1/ T1 = P2V2 / T2

200

Define STP conditions

Standardized temperature and pressure

T= room temp 0 C (273.15 K)

P= 1 atm

300

Calculate the volume of 1.89 x 10²³ molecules of nitrogen gas trapped in a container at a pressure of 325.4 torr and a temperature of 198 F

V= 21.99 L

400

Convert the following:

2.74 atm --> X mmHg

X mmHg ---> Y Torr

Y Torr ---> Z kPa

Z kPa ---> :) PSI

X mmHg: 2,082.4 

Y Torr: 2,082.4 

Z kPa: 277.63 

:) PSI: 40.26

500

A lightbulb contains 0.0758 g of argon gas with a pressure of 98 Torr at 27.0 C. The light bulb is then turned on and the temperature eventually rises to 290 C. Calculate the final pressure inside the lightbulb.

P= 0.24 atm

Silly little questions

100

Tounge twister !!

 say "Pad kid poured curd pulled cod"

x3 without messing up

200

Whats a leprechauns favorite time of day?

Golden hour 

300

Draw your best leprechaun 

:)

400

Solve for the integral 2x dx from 1 to 3

8

500

Who is evil in Carti's new album?

J0Rdan