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

Author Question: Nickel has a lower atomic mass than cobalt, even though it has a higher atomic number. One possible ... (Read 21 times)

jlbond23

  • Full Member
  • ***
  • Posts: 143
on: Nov 5, 2023

Question 1

Hydrogen gas is reacted with nitrogen gas to form ammonia gas. Write the balanced reaction (omit state symbols (s), (l), (g), (aq), etc.).

Question 2

Nickel has a lower atomic mass than cobalt, even though it has a higher atomic number. One possible explanation is that one of the average atomic masses was miscalculated. In the case of cobalt, there is only one isotope: 100% 59Co at a mass of 58.9332 amu. For nickel, however, there are five isotopes as given in the table.
Isotope
mass (amu)
abundance
   58Ni
  57.9354
  67.76%
   60Ni
  59.9308
  26.16%
   61Ni
  60.9311
    1.25%
   62Ni
  61.9283
    3.66%
   64Ni
  63.9280
    1.16%
         
A. Using the data in the table, calculate the average atomic mass for nickel.
         
B. Is the atomic mass for nickel in your periodic table correct?
         
C. Regardless of your answer to part B, how else could you explain the observation that the atomic mass of nickel is less than the mass of cobalt, even though it has the higher atomic number?
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jlbond23 on Nov 5, 2023

romyclv

  • Full Member
  • ***
  • Posts: 158
Reply #1 on: Nov 5, 2023
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 60% of students answer this correctly


jlbond23

  • Member
  • Posts: 143
Reply 2 on: Nov 5, 2023
Excellent

yeungji

  • Member
  • Posts: 319
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

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.

Pott’s Occurs at the ankle and affects both bones of the lower leg (fibula and tibia) Pott’s Occurs at the ankle and affects both bones of the lower leg (fibula and tibia)
The tarsier is a haplorhine, and may represent an evolutionary bridge between lower and higher prima The tarsier is a haplorhine, and may represent an evolutionary bridge between lower and higher prima
A horizontally opposed engine design helps to lower the vehicle’s center of gravity. A horizontally opposed engine design helps to lower the vehicle’s center of gravity.
How to find the average atomic mass of an element How to find the average atomic mass of an element
Calculate the number of sodium ions in 0.375moles of Na2CO3.10H20 Calculate the number of sodium ions in 0.375moles of Na2CO3.10H20
The Haploid Number of Chromosomes for a Variety of Organisms The Haploid Number of Chromosomes for a Variety of Organisms
Video: Angiotensin II - kidneys, adrenal glands and dehydration

For a complete list of videos, visit our video library