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 185 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
Wow, this really help

jamesnevil303

  • Member
  • Posts: 337
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

sodium sodium
Formation of sodium chloride ions. Formation of sodium chloride ions.
Solve the solution set of the following system using Graphical Method. Solve the solution set of the following system using Graphical Method.
What mass, in grams, of a 5.00% by mass sugar water solution is needed to supply What mass, in grams, of a 5.00% by mass sugar water solution is needed to supply
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
Which of the following is not a unit factor related to a 15.0% aqueous solution Which of the following is not a unit factor related to a 15.0% aqueous solution
Video: Role of the urinary system - acidosis and alkalosis

For a complete list of videos, visit our video library