This topic contains a solution. Click here to go to the answer

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 79 times)

Alainaaa8

  • Hero Member
  • *****
  • Posts: 576
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



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sultana.d

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

163

Answer to Question 2

C




Alainaaa8

  • Member
  • Posts: 576
Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)


frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

For a complete list of videos, visit our video library