1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
soldi70 [24.7K]
3 years ago
11

A chemist weighed out 101. g of beryllium. Calculate the number of moles of beryllium she weighed out.

Biology
1 answer:
g100num [7]3 years ago
6 0

Answer:

The correct answer is - 11.209 moles.

Explanation:

According to the definition of moles,

moles = weight/molecular weight

given:

weight of beryllium = 101 g

the molecular weight of beryllium = 9.01

∵ 9.01 g weight of beryllium = 1 mole

∴ 1 g weight of beryllium = 1/9.01 moles

∴ 101 g of beryllium =101/9.01  moles

The = 11.209 moles.

                                 .

You might be interested in
Abdul is studying a molecule that he
Roman55 [17]

Answer:

RNA

Explanation:

6 0
3 years ago
Why is it important that living organisms not reach equilibrium in the concentrations of oxygen and carbon dioxide?
Mashcka [7]

Answer:

The living organisms must not reach equilibrium in the concentration of oxygen and carbon dioxide so that the Exchange of gases continues . Otherwise respiration and photosynthesis will stop.

Explanation:

  • Gases move along the concentration gradient i.e. from their higher concentration to lower concetration.
  • If living  organisms reach a equilibrium of carbon dioxide and oxygen concentration, then The gases will not move in and out of the cells.
  • This is because at state of equilibrium the concentration of gases on both side become equal and the movement completely ceases.
  • If gaseous exchange in the body stops the process of respiration and photosynthesis in Plants and respiration in animal will completely stop.
8 0
3 years ago
When was the structure and function of DNA discovered?
kirza4 [7]

Answer:

C : 1953

Explanation:

The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science.

7 0
3 years ago
Read 2 more answers
The Galapagos islands are considered to be "young" islands. Explain what this means.
Nata [24]
The Galapagos are considered 'young'because they were created relatively recently in geologic history. The islands are located on the Nazca oceanic plate and were formed by hot spot volcanic activity. As the tectonic plate moves over the hot spot repeated eruptions form islands. The Galapogus islands are thought to be no more than 5 million years old. 
8 0
3 years ago
Which example is a body fossil?
Gwar [14]

Answer:

claw print

Explanation:

8 0
3 years ago
Other questions:
  • Which compound exhibits geometric isomerism also called cis-trans isomers? For a molecule to have geometric isomers, each C atom
    14·1 answer
  • Why are DRIs a preferred value for nutritional intake
    7·1 answer
  • Most people suffering from sleepwalking disorder do not have a family history of this disorder.
    13·1 answer
  • How are linked genes different from sex-linked genes?
    14·1 answer
  • What phase occurs directly after g2
    9·1 answer
  • The fundamental Mendelian process which involves the separation of contrasting genetic elements at the same locus would be calle
    13·1 answer
  • A chemical has been found to harm the same components in both prokaryotic and eukaryotic cells. witch components are those?
    14·1 answer
  • Help plssss?!!!!!!!!!
    7·1 answer
  • What processes occur during S phase? Choose all which apply.
    5·1 answer
  • 36. What are the two smaller tubes that branch off of the trachea?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!