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Author Question: If you plug a 110-V electric toaster into a 220-V outlet, current in the toaster will be about A) ... (Read 160 times)

jeatrice

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on: Jul 29, 2018
If you plug a 110-V electric toaster into a 220-V outlet, current in the toaster will be about
 
  A) half what is should be.
  B) the same as if it were plugged into a 110-V outlet.
  C) more than twice what it should be.
  D) twice what it should be.

Question 2

2.0 L of a ideal nitrogen gas (N2 ) are at 0.00C and 1.0 atm. The ideal gas constant is R = 8.314 J/mol  K = 0.0821 L  atm/mol  K, Avogadro's number is 6.022  1023 molecules/mol, and the ATOMIC mass of nitrogen is 14 g/mol.
 
  (a) Determine the number of moles of N2. (b) How many molecules of N2 are present? (c) What is the mass of this gas?


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Li Jun

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

(a) 0.089 mol (b) 5.4  1023 molecules (c) 2.5 g


jeatrice

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

triiciiaa

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Reply 3 on: Yesterday
Gracias!

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