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
Lana71 [14]
3 years ago
9

Which of the following is an example of element? A.Water B.Chlorine C.Carbon Dioxide D.Sugar

Chemistry
1 answer:
prisoha [69]3 years ago
8 0
The answer is B chlorine. Chlorine is and elements and the others are compounds.
You might be interested in
Hydrofluoric acid is what type of acid?
posledela

Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colourless, acidic and highly corrosive. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon).

5 0
2 years ago
In a mixture of hydrogen and nitrogen gases, the mole fraction of nitrogen is 0.333. If the partial pressure of hydrogen in the
notka56 [123]

Answer:

P_T=112.4torr

Explanation:

Hello there!

In this case, since these problems about gas mixtures are based off Dalton's law in terms of mole fraction, partial pressure and total pressure, we can write the following for hydrogen, we are given its partial pressure:

P_{H_2}=x_{H_2}*P_T

And can be solved for the total pressure as follows:

P_T=\frac{P_{H_2}}{x_{H_2}}

However, we first calculate the mole fraction of hydrogen by subtracting that of nitrogen to 1 due to:

x_{H_2}+x_{N_2}=1\\\\x_{H_2}=1-0.333=0.667

Then, we can plug in to obtain the total pressure:

P_T=\frac{75.0torr}{0.667}\\\\P_T=112.4torr

Regards!

4 0
2 years ago
How long does it take Earth to make one revolution?
andrew11 [14]

Answer:

365 days and five hours

8 0
2 years ago
Read 2 more answers
From top to bottom in most groups of elements atomic radii tend to
kogti [31]
As you go down a group on the periodic table, atomic radii tend to increase because elements with larger atomic numbers have more occupied electron levels which take up more space surrounding the nucleus.

I hope this helps.
3 0
3 years ago
What is the source of energy for the Sun?
nikitadnepr [17]

Answer:

Nuclear fusion

Explanation:

Nuclear fusion is the source of Sun's energy.. At the core where temperature and pressure are very high hydrogen atoms fuse into helium atom and release energy in the form of Gama rays.

3 0
3 years ago
Other questions:
  • An atom of 105In has a mass of 104.914558 amu. Calculate the binding energy in MeV per NUCLEON. Enter your answer with 3 signifi
    8·1 answer
  • Balance this half-reaction: Re → ReO2 (acidic solution)
    9·1 answer
  • How can you test the complete separation of camphor and sand​
    13·2 answers
  • Help please, 44 to 45, calculate the answers to the following problems. Use the following equation as the basis of your calculat
    10·2 answers
  • Describe the chemical reaction based on the chemical equation below also whether the equation is balanced
    5·1 answer
  • Into what kinds of energy does a toaster convert electrical energy?
    10·2 answers
  • A student says: Potassium (K) always has 20 protons. Explain why the student is incorrect.
    15·1 answer
  • What is the correct name for the following compound: P2Br5
    11·1 answer
  • The EPA has used the slogan “Ozone: good up high, bad nearby” in some of its publications for the general public. Explain the me
    9·1 answer
  • Because of a scarcity of workers in the New World, persons were transported against their will to work on large farms without pa
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!