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

Author Question: Cesium-137 undergoes beta decay and has a half-life of 30.0 years. How many beta particles are ... (Read 60 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Aug 27, 2018
Cesium-137 undergoes beta decay and has a half-life of 30.0 years. How many beta particles are emitted by a 14.0-g sample of cesium-137 in three minutes?
 
  A) 6.1  1013
  B) 6.2  1022
  C) 8.4  1015
  D) 1.3  10-8
  E) 8.1  1015

Question 2

Calcium hydride (CaH2 ) reacts with water to form hydrogen gas: CaH2 (s) + 2H2O (l)  Ca(OH)2 (aq) + 2H2 (g) How many grams of CaH2 are needed to generate 48.0 L of H2 gas at a pressure of 0.995 atm and a temperature of 32 C?
 
  A) 56.8
  B) 0.954
  C) 161
  D) 40.1
  E) 80.3

Question 3

Complexes containing metals with d10 electron configurations are typically colorless because ________.
 
  A) there is no d electron that can be promoted via the absorption of visible light
  B) the empty d orbitals absorb all of the visible wavelengths
  C) there are no d electrons to form bonds to ligands
  D) a complex must be charged to be colored
  E) d electrons must be emitted by the complex in order for it to appear colored
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

parker125

  • Sr. Member
  • ****
  • Posts: 332
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 35% of students answer this correctly


viki

  • Member
  • Posts: 525
Reply 2 on: Aug 27, 2018
:D TYSM

mohan

  • Member
  • Posts: 362
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Basic energy of a human life Basic energy of a human life
The Scale of Life The Scale of Life
Stereotypes, which play such a profound role in social life, are a basic area of sociological ... Stereotypes, which play such a profound role in social life, are a basic area of sociological ...
Enterohepatic recirculation of a drug can increase its half-life in the body and prolong its ... Enterohepatic recirculation of a drug can increase its half-life in the body and prolong its ...
A. Clara Peeters Still Life with Fruit and Flowers A. Clara Peeters Still Life with Fruit and Flowers
The impact of industry and manufacturing on our life The impact of industry and manufacturing on our life
Video: Spinal Cord Injury Animation

For a complete list of videos, visit our video library