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

Author Question: If two protons and two neutrons are removed from the nucleus of an oxygen atom, a nucleus of which ... (Read 157 times)

D2AR0N

  • Hero Member
  • *****
  • Posts: 561
on: Jul 29, 2018
If two protons and two neutrons are removed from the nucleus of an oxygen atom, a nucleus of which element remains?
 
  A) nitrogen-12
  B) carbon-12
  C) neon-18
  D) carbon-14

Question 2

Boron has primarily two isotopes, one with an atomic mass of 11 amu and another with an atomic mass of 10 amu. If the abundance of the boron atom with a mass
 
  of 11 amu is 18.9 percent and the abundance of the other isotope is 81.1 percent, what would be the average mass of the boron atom?
  A) 10.19 amu
  B) 11 amu
  C) 10 amu
  D) 10.81 amu
  E) not enough information given


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mk6555

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: A


D2AR0N

  • Member
  • Posts: 561
Reply 2 on: Jul 29, 2018
Wow, this really help

rleezy04

  • Member
  • Posts: 322
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Release of Dopamine in the Nucleus Accumbens Release of Dopamine in the Nucleus Accumbens
THC and Dopamine Secretion in the Nucleus Accumbens THC and Dopamine Secretion in the Nucleus Accumbens
Upsetting the entire social order, the French Revolution removed the past as a sure guide to the ... Upsetting the entire social order, the French Revolution removed the past as a sure guide to the ...
The atom. The atom.
A backpressure tool can be made by using an oxygen sensor housing and using epoxy or braze to hold ... A backpressure tool can be made by using an oxygen sensor housing and using epoxy or braze to hold ...
The mole fraction of oxygen in dry air near sea level is 0.20948, where the molar mass of ... The mole fraction of oxygen in dry air near sea level is 0.20948, where the molar mass of ...
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

For a complete list of videos, visit our video library