Chem 2 Day 26 Starter: Review

What are the products of this reaction?
Cu+ AgNO₃--> 

• Cu(NO₃)₂+Ag
• CuNO₃ + Ag
• CuAg+NO₃
• Cu+ AgNO₃

Write a Balanced Equation for this reaction:
C₂H₄ + 2 O₂ -->

• C₂O₂ + H₄
• CO₂ + HOH
• CO + H
• 2 CO₂ + 2H₂O

in a reaction, aqueous barium chloride reacts with aqueous potassium carbonate to produce solid barium carbonate and aqueous potassium chloride. what is the correct balanced equation.

• Ba₂Cl_(aq) + KCO_3(aq) --> BaCO_3(s) + KCl_(aq)
• BaCl_2(aq) + K₂CO_3(aq) --> BaCO_3(s) + 2KCl_(aq)
• BaCl_(aq) + K₂CO_3(aq) --> BaCO_3(s) + K₂Cl_(aq)
• Ba₂Cl_2(aq) + KCO_3(aq) --> Ba₂CO_3(s) + KCl_2(aq)

How many grams are in 7.8 moles of NaCl?

• 476grams
• 460 grams
• 452 grams
• 462 grams

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from  6 moles H₂? 

• 4 moles Fe
• 6 moles Fe
• 9 moles Fe
• 2 moles Fe

5) If you’re given 50 grams of Hg(OH)₂, how many grams of H₂O do you make?

1 Hg(OH)₂ + 2 HBr → 2 H₂O + 1 HgBr₂

• 3.8 g Hg(OH)₂

• 1.9 g Hg(OH)₂

• 7.6 g Hg(OH)₂

• 328.6 g Hg(OH)₂

Based on the activity series, will this reaction occur?
Ni (s) + H₂O (l) →

• Yes
• No

Based on the activity series, will this reaction occur?
Br₂ (l) + KI (aq) →

• Yes
• No

What is the oxidation number of chlorine in HClO?

• 0

• -1

• +1

• +5

In the reaction Zn + 2HCl --> ZnCl₂ + H₂

which element, if any, is oxidized?

• Zinc

• Hydrogen

• Chlorine

• None