« previous next »

Author Question: Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though ... (Read 85 times)

jho37

  • Hero Member
  • *****
  • Posts: 531
on: Jul 27, 2018
Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though they are three of the five simplest elements, why are they rare compared to many heavier elements?
 
  What will be an ideal response?

Question 2

Do you think it is possible that a 1.5-solar-mass red giant could harbor an advanced civilization? Explain your reasoning.
 
  What will be an ideal response?


kswal303

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 27, 2018
Answer to Question 1

Helium fuses into carbon by combining three helium nuclei (atomic number

Answer to Question 2

A 1.5-solar-mass red giant is a temporary stage of life for a low-mass star. If an advanced civilization had already developed around this star, which is possible, then it may have had the resources to respond to its expanding, cooling, and brightening star.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Three possible phylogenies for the australopithecines with Au. anamnesis as the stem ancestor and re Three possible phylogenies for the australopithecines with Au. anamnesis as the stem ancestor and re
Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ... Number of positive, negative, and neutral images recalled by younger, middle-age, and older adults. ...
How to multiply a complex number by its conjugate How to multiply a complex number by its conjugate
Number of Chromosomes in Selected Organisms Number of Chromosomes in Selected Organisms
What is the minimum number of straight, continuous lines that are necessary to c What is the minimum number of straight, continuous lines that are necessary to c
Number line for rounding Number line for rounding
Video: Types of disease resistance: innate defenses & immunity

For a complete list of videos, visit our video library