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

Author Question: Ka for HCN is 4.9 10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide? A) 0.74 ... (Read 113 times)

asd123

  • Hero Member
  • *****
  • Posts: 557
on: Aug 27, 2018
Ka for HCN is 4.9  10-10. What is the pH of a 0.068 M aqueous solution of sodium cyanide?
 
  A) 0.74
  B) 2.96
  C) 11.07
  D) 13.24
  E) 7.00

Question 2

How many iron(II) ions, Fe2+ are there in 5.00 g of FeSO4?
 
  A) 5.46  10-26 iron (II) ions
  B) 1.98  1022 iron (II) ions
  C) 1.83  1025 iron (II) ions
  D) 4.58  1026 iron (II) ions

Question 3

A sample of air from a home is found to contain 7.2 ppm of carbon monoxide. This means that if the total pressure is 695 torr, then the partial pressure of CO is ________ torr.
 
  A) 5.0  103
  B) 5.0  10-3
  C) 5.0
  D) 1.0  104
  E) 9.7  107
Chemistry: The Central Science ¦ Brown, LeMay, Bursten ¦ 14th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Expo

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Aug 27, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 26% of students answer this correctly


asd123

  • Member
  • Posts: 557
Reply 2 on: Aug 27, 2018
Gracias!

dyrone

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Cyanide works by making the human body unable to use oxygen.

sodium sodium
Membrane potential of a cell freely permeable to sodium only. Membrane potential of a cell freely permeable to sodium only.
Solution to Exponent Law Problem Solution to Exponent Law Problem
Calculate the molar solubility of CaF2 in a solution containing 0.250 M Ca(NO3)2. Calculate the molar solubility of CaF2 in a solution containing 0.250 M Ca(NO3)2.
with solution with solution
0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ... 0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ...
Video: T cell receptors

For a complete list of videos, visit our video library