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Author Question: How many significant figures are there in the measurement of 5.062 x 10-3? A. 1 B. 2 C. 3 ... (Read 63 times)

michelleunicorn

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on: Aug 27, 2018
How many significant figures are there in the measurement of 5.062 x 10-3?
 
  A. 1
   B. 2
   C. 3
   D. 4

Question 2

How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 2.75 g of Fe2S3 if the percent yield for the reaction is 65.0? 3 Na2S(aq) + 2 FeCl3(aq)  Fe2S3(s) + 6 NaCl(aq)
 
  A) 50.9 mL
  B) 86.0 mL
  C) 102 mL
  D) 203 mL

Question 3

The greater the lattice energy, the greater the charges on the participatory ions and the smaller their radii.
 
  Indicate whether the statement is true or false


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robbielu01

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

D

Answer to Question 3

TRUE


michelleunicorn

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  • Posts: 565
Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

nguyenhoanhat

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Reply 3 on: Yesterday
Excellent

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