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Author Question: How many grams of H3PO4 are in 415 mL of a 4.00 M solution of H3PO4? What will be an ideal ... (Read 59 times)

Alainaaa8

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on: Aug 27, 2018
How many grams of H3PO4 are in 415 mL of a 4.00 M solution of H3PO4?
 
  What will be an ideal response?

Question 2

A sample of He gas (2.0 mmol) effused through a pinhole in 53 s. The same amount of an unknown gas, under the same conditions, effused through the pinhole in 248 s. The molecular mass of the unknown gas is ________ g/mol.
 
  A) 0.19
  B) 5.5
  C) 88
  D) 19
  E) 350


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sultana.d

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

163

Answer to Question 2

C


Alainaaa8

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Reply 2 on: Aug 27, 2018
Wow, this really help

nguyenhoanhat

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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