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Author Question: Some chemicals which are exposed to sunlight will continue to glow even when they are placed in a ... (Read 34 times)

dalyningkenk

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on: Aug 27, 2018
Some chemicals which are exposed to sunlight will continue to glow even when they are placed in a dark room. This phenomenon is known as
 
  A) alpha emission.
  B) beta emission.
  C) fluorescence.
  D) X-rays.

Question 2

Which reagent will be used up first if 78.1 g of O2 is reacted with 62.4 g of C4H10?
 
  2 C4H10 + 13 O2  8 CO2 + 10 H2O
  A) C4H10, butane
  B) oxygen
  C) water
  D) carbon dioxide

Question 3

Which of the following compounds is the weakest acid?
 
  A) acetic acid, Ka = 1.8  10-5
  B) nitrous acid, Ka = 4.5  10-4
  C) hydrogen peroxide, Ka = 2.4  10-12
  D) hypochlorous acid, Ka = 3.5  10-8


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tkempin

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

C

Answer to Question 2

B

Answer to Question 3

C


dalyningkenk

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Reply 2 on: Aug 27, 2018
Excellent

jomama

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Reply 3 on: Yesterday
:D TYSM

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