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Author Question: The correct formula for sodium bicarbonate is A. NaCO3. B. Na4(CO3)2. C. Na2CO3. D. ... (Read 145 times)

ishan

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on: Aug 27, 2018
The correct formula for sodium bicarbonate is
 
  A. NaCO3.
   B. Na4(CO3)2.
   C. Na2CO3.
   D. NaHCO3.

Question 2

When 7.00  1022 molecules of ammonia react with 6.00  1022 molecules of oxygen according to the chemical equation shown below, how many grams of nitrogen gas are produced? 4 NH3(g) + 3 O2(g)  2 N2(g) + 6 H2O(g)
 
  A) 1.63 g
  B) 1.86 g
  C) 4.19 g
  D) 6.51 g

Question 3

What is the term for finding the mass of a sample indirectly by first weighing a flask empty,
  and then weighing the flask containing a liquid?
 
  A) weighing by density
  B) weighing by difference
  C) weighing by flask
  D) weighing by mass
  E) none of the above


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nguyenhoanhat

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

D

Answer to Question 2

A

Answer to Question 3

B)


ishan

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Reply #2 on: Aug 27, 2018
Both answers were spot on, thank you once again


nguyenhoanhat

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Reply #3 on: Aug 27, 2018
Great! Please up vote :D


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