If the rate law for the reaction 2A + 3B products is second ...

[kamilo84]

If the rate law for the reaction 2A + 3B  products is second order in A and first order in B, then the rate law is rate = ________.
 
  A) kAB
  B) kA2B3
  C) kAB2
  D) kA2B
  E) kA2B2

Question 2

Lead (II) carbonate decomposes to give lead (II) oxide and carbon dioxide: PbCO3 (s)  PbO (s) + CO2 (g) How many grams of lead (II) oxide will be produced by the decomposition of 2.50 g of lead (II) carbonate?
 
  A) 0.41
  B) 2.50
  C) 0.00936
  D) 2.09
  E) 2.61

Question 3

________ are found uncombined, as monatomic species in nature.
 
  A) Noble gases
  B) Chalcogens
  C) Alkali metals
  D) Alkaline earth metals
  E) Halogens

[mohan]

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[kamilo84]

Thank you!

[mohan]

Always glad to help...