[anabanana]

Mass of test tube
22.202 g
Mass of 150mL beaker
50.00g
Mass of test tube and AgNO3
23.842 g
Mass of copper before reaction with AgNO3
5.030 g
Mass of copper after reaction with AgNO3
4.730 g
Mass of silver produced by the reaction
1.020 g

Based on the data provided in Table 1.0 answer the questions below
1. The mass of AgNO3 reacted is __________.
  a.  1.640 grams               c.  0.300 grams
  b.  87.173 grams             d.  1.020 grams



2. The moles of AgNO3 (170 grams/mole) reacted is ____________.
  a.  0.0941 mole               c.  0.0018 mole
  b.  0.513 mole               d.  0.00965 mole



3. The mass of copper reacted is ___________.
  a.  l.600 grams               c.  0.300 grams
  b.  87.170 grams           d.  1 .200 grams



4. The moles of copper (atomic mass 63.5 grams/mole) reacted is ________.
  a.  0.0285 moles Cu       c.  0.00472 moles Cu
  b. 1.373 moles Cu          d.  0.0161 moles Cu



5.  Based on your answers to questions 1 through 4 and the remaining data, the balanced equation should be _______________________________.
   a.  AgNO3 + Cu  >  Ag + CuNO3
   b.  AgNO3 + 2Cu >  Ag + Cu2NO3    c.  2AgNO3 + 2Cu >  2Ag + 2CuNO3
   d.  2AgNO3 + Cu  > 2Ag + Cu(NO3)2

[Astrokel]

Only 4 is correct. Think again! In this case copper is the limiting reagent since there is excess copper. so you can safely assume all AgNO₃ is used up. I don't understand how you get 3 wrong yet you get 4 right unless you are guessing it?

[JGK]

Astrokel, are you sure 5 is incorrect?

Based on the (correct) answers to 2 and 4

[Astrokel]

Yes based on 2 and 4, his answer to 5 is wrong, no? Is there such thing as Cu₂NO3?

[JGK]

Yes based on 2 and 4, his answer to 5 is wrong, no? Is there such thing as Cu₂NO3?

Sorry, I'm  a biochemist, anything below a molecular wt of 500 and I'm on foreign territory

[Astrokel]

It's fine. I know nothing about biology.

p.s sorry for the out-of-topic

[macman104]

I've never heard of Cu2NO3, CuNO3, but not Cu2NO3.

[AWK]

Only 4 is correct. Think again! In this case copper is the limiting reagent since there is excess copper. so you can safely assume all AgNO₃ is used up. I don't understand how you get 3 wrong yet you get 4 right unless you are guessing it?

[Astrokel]

Thanks for pointing the mistake out