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

Author Question: An acetylene molecule contains 2 atoms of carbon. The number 2 represents how many significant ... (Read 104 times)

cookcarl

  • Hero Member
  • *****
  • Posts: 539
on: Aug 27, 2018
An acetylene molecule contains 2 atoms of carbon. The number 2 represents how many significant figures?
 
  A) one
  B) two
  C) three
  D) infinite

Question 2

Which are isotopes? An atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has
 
  A) an atomic number of 21 and a mass number of 42.
  B) an atomic number of 20 and a mass number of 40.
  C) 22 neutrons and 20 protons.
  D) 22 protons and 20 neutrons.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

blakcmamba

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

B


cookcarl

  • Member
  • Posts: 539
Reply 2 on: Aug 27, 2018
Gracias!

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Carbon Cycle Carbon Cycle
Conscientiousness is negatively correlated with a number of health-related behaviors. The higher the ... Conscientiousness is negatively correlated with a number of health-related behaviors. The higher the ...
A ring link network reduces the number of wires it takes to interconnect all of the modules. A ring link network reduces the number of wires it takes to interconnect all of the modules.
The crystal structure of an IgG molecule from mouse The crystal structure of an IgG molecule from mouse
Cholesterol Molecule Cholesterol Molecule
An electron micrograph and an interpretive drawing of the hybrid molecule An electron micrograph and an interpretive drawing of the hybrid molecule
Video: Heart Chambers

For a complete list of videos, visit our video library