« previous next »

Author Question: The element that has a valence configuration of 2s2 is ________. A) Be B) Mg C) Ca D) Sr E) ... (Read 69 times)

abc

  • Hero Member
  • *****
  • Posts: 543
on: Aug 27, 2018
The element that has a valence configuration of 2s2 is ________.
 
  A) Be
  B) Mg
  C) Ca
  D) Sr
  E) Ba

Question 2

Calculate the pH of 0.726 M anilinium hydrochloride (C6H5NH3Cl) solution in water, given that Kb for aniline is 3.83  10-4.
 
  A) 1.78
  B) 12.22
  C) 5.36
  D) 8.64
  E) 12.42


kristenb95

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Element Cube Element Cube
Elements found in the element cube Elements found in the element cube
A Human Element Emerges A Human Element Emerges
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ... If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...
What element(s) is/are being oxidized? What element(s) is/are being oxidized?
Cis-element regulatory structures in eukaryotes Cis-element regulatory structures in eukaryotes
Video: Stomach peristalsis & Enterogastric reflex

For a complete list of videos, visit our video library