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
zmey [24]
3 years ago
9

How many molecules are there in 4.00 l of oxygen gas at 500.∘ c and 50.0 torr?

Chemistry
1 answer:
Oliga [24]3 years ago
3 0
From  the  ideal  gas law   
pv=nRT , n  is  therefore PV/RT
R is  the
R is  gas  constant =62.364 torr/mol/k
P=500torr
 V=4.00l
T=500+273=773k
n={(500 torr x 4.00l)/(62.364 x773k)}=0.041moles
the  number  of  molecules=moles  x avorgadro costant that is  6.022x10^23)
6.022 x 10^23)  x0.041=2.469 x10^22molecules
You might be interested in
Describe how a chemical change follows the law of conservation of matter.<br> give examples pls
Paha777 [63]

Explanation:

In any chemical change, one or more initial substances change into a different substance or substances. ... According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and kind of atoms after the chemical change as were present before the chemical change

Example:

The carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.

5 0
2 years ago
Compare the values of the spin quantum number for two electrons in the same orbital
Leokris [45]
If there are 2 electrons in the same orbital, the spin numbers would be different for both of these 2 electrons. One would have an up spin and the other a down spin.
3 0
3 years ago
What are chemical formulas? Give an example of a chemical formula.
aniked [119]

Explanation:

NaCl, HCl, NaOH, KCl, CH3COOH

4 0
3 years ago
The following balanced equation shows the formation of water. 2H2 + O2 2H2O How many moles of oxygen (O2) are required to comple
motikmotik

Answer:

13.7 moles of O₂ are needed

Explanation:

In order to find the moles of reactants that may react to make the products we need to determine the reaction:

Reactants are hydrogen and oxygen

Product: Water

2 moles of hydrogen can react to 1 mol of oxygen and produce 2 moles of water.

Balanced reaction: 2H₂(g) + O₂(g) →  2H₂O(l)

If 2 moles of hydrogen need 1 mol of oxygen to react

Therefore, 27.4 moles of H₂ must need (27.4 .1) / 2 = 13.7 moles of O₂

8 0
2 years ago
n the diagram shown, when an object ‘X’ is brought near the ring shaped magnet, the magnet moves away from it. Four friends are
kati45 [8]

Answer:

Akash

Explanation:

it could be a magnet with the same poles facing eachoher

6 0
2 years ago
Other questions:
  • The temperature at which a substance in the liquid phase transforms to the gaseous phase refers to the substance's _______. A. s
    10·2 answers
  • Which of the following statements best describes the relationships between carrying captivity in population size
    6·1 answer
  • Aluminum foil is often incorrectly termed tin foil. If the density of tin is 7.28g/cm³,what is the thickness of a piece of tin f
    6·1 answer
  • The use of phenol (carbolic acid) as a wound disinfectant was first practiced by:
    11·1 answer
  • How do heater meals work?
    10·1 answer
  • Ammonia is an important ingredient in many fertilizers. The main process by which ammonia is made is the Haber process. In this
    7·2 answers
  • Which of these best show a physical change?​
    10·1 answer
  • How many grams of water are needed to form 21.8 grams of oxygen gas?
    9·1 answer
  • HEELLLPPPPPPPPPPPPPPPPPPPPPPPPPPP
    7·1 answer
  • How does heat affect water and its state of matter
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!