This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How many mL of 16 M NH3 are needed to prepare 2.00 L of a 2.00 M solution? A) 250 mL B) 125 mL ... (Read 94 times)

s.tung

  • Hero Member
  • *****
  • Posts: 577
on: Aug 27, 2018
How many mL of 16 M NH3 are needed to prepare 2.00 L of a 2.00 M solution?
 
  A) 250 mL
  B) 125 mL
  C) 16 mL
  D) 8.0 mL
  E) 4.0 mL

Question 2

Use the standard reaction enthalpies given below to determine Hrxn for the following reaction:
 
  P4(g) + 10 Cl2(g)  4PCl5(s) Hrxn = ?
 
  Given:
   PCl5(s)  PCl3(g) + Cl2(g) Hrxn= +157 kJ
   P4(g) + 6 Cl2(g)  4 PCl3(g) Hrxn = -1207 kJ
 
  A) -1835 kJ
  B) -1364 kJ
  C) -1050. kJ
  D) -1786 kJ
  E) -2100. kJ

Question 3

A gas at 25C exactly fills a container previously determined to have a volume of 1.05  103 cm3. The container plus gas are weighed and found to have a mass of 837.6 g. The container, when emptied of all gas, has a mass of 836.2 g.
 
  What is the density of the gas at 25C?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

A

Answer to Question 3

1.3  10-3 g/cm3


s.tung

  • Hero Member
  • *****
  • Posts: 577
Reply #2 on: Aug 27, 2018
TY


Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #3 on: Aug 27, 2018
You're welcome


« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

How to detemine the PH of a solution when given the hydrogen concentration How to detemine the PH of a solution when given the hydrogen concentration
Solution to exponential problem Solution to exponential problem
What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ... What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ...
The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C? The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C?
What volume of 8.25 M HCl solution must be diluted to prepare 2.40 L of 0.500 M What volume of 8.25 M HCl solution must be diluted to prepare 2.40 L of 0.500 M
A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ... A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ...
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library