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
dusya [7]
3 years ago
10

Identify the activity that belongs in the field of chemistry.

Chemistry
2 answers:
SVEN [57.7K]3 years ago
3 0
D. All of the above. Developing medicine, analyzing compounds and producing new product such as plastic all have to deal with chemistry. 
Jlenok [28]3 years ago
3 0

D. all of the above. took the test


You might be interested in
The vapor pressure of pure water at 250C is 23.77 torr. What is the vapor pressure of water above a solution that is 1.500 m glu
Olegator [25]

Answer:

Vapor pressure of water = 23.14torr

Explanation:

When you made a solution, vapor pressure decreases following Raoult's law:

P_{solution} = X_{solvent} P_{solvent}

<em>Where P is vapor pressure and X mole fraction</em>

As vapor pressure of water is 23.77torr we must find the mole fraction of water knowing the solution is 1.500m glucose (That is 1.500 moles of glucose per kg of water = 1000g of water).

1000g of H₂O are, in moles (Molar mass: 18.02g/mol):

1000g H₂O ₓ (1mole / 18.02g) = 55.5 moles of H₂O.

As we know now the solution contains 55.5 moles of water and 1.5 moles of glucose. Thus, mole fraction of water (Solvent) is:

X_{H_2O} = \frac{55.5molesH_2O}{55.5molesH_2O + 1.5 molesGlucose} = 0.9737

Replacing in Raoult's law, pressure of water above the solution is:

P_{solution} = X_{solvent} P_{solvent}

P_{solution} = 0.9737*23.77torr

<h3>Vapor pressure of water = 23.14torr</h3>
7 0
3 years ago
In one or two sentences, explain why the combined weight of several liquids mixed in an open flask can be less than but never mo
Rasek [7]

Answer:

Liquids in a form of mixture has less weight as compared to sum of all liquid's weight due to release of gases.

The combined weights of several liquids mixed in an open flask be less than the sum of all the weights of the liquids because when the reaction occurs new products are formed and also some gases which releases in the atmosphere.

These gases also contribute in the weight of the product so when it is released the weight of the mixture of liquids are less than the sum of the weights of all liquids so we can conclude that liquids in a form of mixture has less weight as compared to sum of all liquid's weight.

Explanation:

4 0
3 years ago
Read 2 more answers
5. If 4 moles of nitrogen gas reacts with excess hydrogen gas, how many moles of NH3 will be produced?
Setler [38]
The answer is A, hope it helps!
8 0
3 years ago
Please help I hope you can see the question
ra1l [238]

Answer:

e

Explanation:

the reaction can't move to left because H is positive

8 0
3 years ago
Identify the green-yellowish gas that is used as a disinfecting agent. Identify the green-yellowish gas that is used as a disinf
lyudmila [28]

The answer is chlorine

That is chlorine is the green-yellowish gas that is used as a disinfecting agent.

Among the options, iodine is a solid ,bromine is liquid while fluorine and chlorine are gases.

Chlorine is greenish yellow colored gas while fluorine is pale yellow, chlorine is used as a disinfecting agent and oxidizing agent as well.

4 0
4 years ago
Other questions:
  • An observation balloon was filled with 0.50 atmospheres of Helium, 54.0 mm Hg of Nitrogen, and 0.400 atmospheres of Hydrogen. Wh
    13·1 answer
  • Define cohesion. Describe how the cohesive property of water is useful for living organisms.
    10·2 answers
  • The period of an osciller is 2.34 minutes. What id the frequency of this oscillator in hertz?
    5·1 answer
  • Check out the three cups. Light behaves differently when it meets each cup. Use the words opaque, transparent, and translucent t
    14·1 answer
  • The space shuttle Endeavor is launched to an altitude of 400,000 m above the surface of the Earth. The shuttle travels at an ave
    11·1 answer
  • What is the name of Earth's closest star? Question 1 options: Sirrius Achemar Sun Canopus
    7·1 answer
  • If position vector r=bt²i + ct³j, where c are positive constants, when does the velocity vector make an angle of 45° with the x
    13·1 answer
  • 19. In which type of cells will mitosis occur?
    12·1 answer
  • What do african snails eat
    14·1 answer
  • Find the longest wavelengths of light that can cleave the bonds in elemental nitrogen, oxygen, and fluorine.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!