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Vocabulary
Pascha
Mixed Problems
Mass to Mass
Miscellaneous
100
A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.
What is mole ratio?
100
The name of the Roman governor of Judaea who condemned Jesus to death on the cross.

Who is Pontius Pilot?

100
Mg + 2HCl --> MgCl2 + H2 How many grams of hydrogen will be produced if we start with 2 moles of hydrochloric acid and excess magnesium?
What is 2 g H2?
100
Mg + 2HCl --> MgCl2 + H2 What mass of hydrogen is produced from the reaction of 75 g HCl (MM=36.5 g/mol) and excess Mg?
What is 2.0 g H2?
100
N2 + 3H2 --> 2NH3 In the reaction above, a student reacted 28 g of nitrogen with an excess of hydrogen. According to the students measurements, the reaction produced 30 g of product. The theoretical yield was 34 g. What is the student's percent yield?
What is 88%?
200

The measured amount of product obtained after performing a chemical reaction.

What is actual/experimental yield?

200

The event which happened on Maundy Thursday that preceded Jesus' arrest. For Double points: This Christian sacrament was initiated at the event.

What is the Last Supper? What is holy communion?

200
Mg + 2HCl --> MgCl2 + H2 What mass of hydrochloric acid (MM=36.5 g/mol) is needed to react with 2.50 moles of magnesium?
What is 182 g HCl?
200
2KClO3 --> 2KCl + 3O2 How many grams of KCl are produced if 5.0 g of KClO3 is decomposed?
What is 3 g KCl?
200
Avogadro's number.
What is 6.022 x 10^23?
300
The reactant that determines the amounts of the other reactants that can combine--and the amount of product that can form--in a chemical reaction.
What is the limiting reactant?
300

The name of the Apostle who betrayed Jesus to the Romans? For Double Points what did they give him in return for his betrayal?

Who is Judas Iscariot? What was 30 pieces of Silver? 

300

4Al + 3O2 --->  2Al2O3 How many moles of aluminum atoms are needed to combine with 1.58 mol of oxygen molecules to make aluminum oxide?

What is 2.1 mol Al?

300

2Na + Cl2 ---> 2NaCl Sodium and chlorine react to produce sodium chloride (table salt; MM=58.5 g/mol). Determine the amount of product that can be produced from 24.7 g of sodium and excess chlorine.

What is 62 g NaCl?

300

How many moles are present in 34 grams of Cu(OH)2?

What is 0.35 mol Cu(OH)2?

400
The ratio of the actual yield to the theoretical yield, multiplied by 100.
What is percent yield?
400

This man was also condemned to death with Jesus, but was chosen by the crowd to go free instead of Jesus.

Who is Barabbas?

400

2NH3 ---> N2 + 3H2 Ammonia decomposes to produce nitrogen and hydrogen gases. How many moles of H2 can be formed by the decomposition of 0.145 moles of ammonia?

What is 0.218 mol H2?

400

NaOH + H2SO4 ---> Na2SO4 + H2O 

Sodium hydroxide reacts with sulfuric acid (H2SO4; MM=98.1 g/mol) to form water and sodium sulfate. How many grams of sodium sulfate (MM=124 g/mol) will be formed from 200 g NaOH (MM=40 g/mol) and an excess of sulfuric acid?

What is 310 g Na2SO4?

400

Write the complete balanced equation for the following reaction: When lithium hydroxide (LiOH) pellets are added to a solution of sulfuric acid (H2SO4) and lithium sulfate (Li2SO4) and water are formed.

What is: 2LiOH + H2SO4 ---> Li2SO4 + 2H2O

500
States that mass is neither created nor destroyed during ordinary chemical or physical reactions. (This is why we balance chemical equations!)
What is the law of conservation of mass?
500

The amount of time between Jesus' resurrection and ascension.

What 40 days?

500

4Al2O3 + 9Fe ---> 3Fe3O4 + 8Al 

Aluminum oxide reacts with iron to form Fe3O4 and Aluminum. Determine with limiting reactant when 5 moles of aluminum oxide reacts with 7 moles of iron.

What is iron?

500

CuCl2 + NaNO3 ---> Cu(NO3)2 + NaCl 

When copper (II) chloride reacts with sodium nitrate, copper (II) nitrate and sodium chloride are formed. If 15 g CuCl2 (MM=134.5 g/mol) react with 20 g NaNO3 (MM=85 g/mol), how much sodium chloride (MM = 58.5 g/mol) can be formed?

What is 13.0 g NaCl?

500

Cl2 + KBr ---> KCl + Br2 

This questions is worth 1000 points! SURPRISE! Chlorine gas reacts with potassium bromide to produce potassium chloride and bromine gas. How many grams of potassium chloride can be produced from 300. g each of chlorine and potassium bromide?

What is 188 g KCl?