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
Scorpion4ik [409]
3 years ago
15

What's a closed system?Explain​

Chemistry
2 answers:
LiRa [457]3 years ago
7 0

Answer:

A physical system

Explanation:

It doesn't allow certain types of transfers, though the transfer of energy is permitted.

NikAS [45]3 years ago
7 0
Physical system that doesn’t allow certain types of transfers, though the transfer of energy is allowed.
You might be interested in
Which solution has the lowest freezing point?
Leokris [45]
<span>Correct Answer: Option 3 i.e. 30 g of KI dissolved in 100 g of water.

Reason:
Depression in freezing point is a colligative property and it is directly proportional to molality of solution.

Molality of solution is mathematically expressed as,
Molality = </span>\frac{\text{Number of moles}}{\text{Weight of solvent (Kg)}}<span>

In case of option 1 and 2, molality of solution is 0.602 m. For option 3, molality of solution is 1.807 m, while in case of option 4, molality of solution is 1.205 m.

<u><em>Thus, second solution (option 2) has highest concentration (in terms of molality). Hence, it will have lowest freezing point</em></u></span>
3 0
3 years ago
Read 2 more answers
Select the term that best completes the following statement:
ankoles [38]

Answer:

C. oxygen atom

Explanation:

H2O contains two hydrogen atoms and one oxygen atom.

3 0
3 years ago
A sample of nitrogen gas had a volume of 500. ml, a pressure in its closed container of 740 torr and a temperature 25 degrees c
Semenov [28]
Question:
              <span>A sample of nitrogen gas had a volume of 500mL, a pressure in its closed container of 740 torr and a temperature of 25°c. what was the volume of gas when the temperature was changed to 50°c and the new pressure was 760 torr?

Answer:

Data Given:
                   V</span>₁  =  500 mL

                   P₁  =  740 torr

                   T₁  =  25 °C + 273  =  298 K

                   V₂  =  ?

                   P₂  =  760 torr

                   T₂  =  50 °C + 273  =  323 K

Solution:
             Let suppose the gas is acting Ideally, then According to Ideal Gas Equation,

                      P₁ V₁ / T₁  =  P₂ V₂ / T₂

Solving for V₂,

                      V₂  =  (P₁ V₁ T₂) ÷ (T₁ P₂)

Putting Values,
  
                      V₂  =  (740 torr × 500 mL × 323 K) ÷ (298 K × 760 torr)

                      V₂  =  527.68 mL
7 0
3 years ago
Osmium: atomic number
bonufazy [111]
Osmium atomic number is 76
7 0
3 years ago
How many total atoms are there is a sugar molecule
Tju [1.3M]

Answer:

The white stuff we know as sugar is sucrose, a molecule composed of 12 atoms of carbon, 22 atoms of hydrogen, and 11 atoms of oxygen (C12H22O11). Like all compounds made from these three elements, sugar is a carbohydrate

7 0
3 years ago
Other questions:
  • How many valence electrons does hydrogen need to have a full first shell?
    5·1 answer
  • A fruit and oatmeal bar contains 142 nutritional calories. Convert this energy to calories
    8·1 answer
  • Conserving the quality of available water is a high priority world-wide. There are many countries where the water supply is reac
    7·1 answer
  • How to write a compound that contains one aluminum atom for every three chlorine atoms?
    5·1 answer
  • Granite can form when magma cools within earth. Basalt can form when lava cools on earth surface. What do granite and basalt hav
    11·1 answer
  • Investigate and explain that when a force is applied to an object but it does not move, it is because another opposing force is
    9·2 answers
  • The inside window pane in your house feels very cold to touch on a winter night. How does the heat transfer?
    10·1 answer
  • You are pushing a refrigerator of 150 kg with a force of 50 Newtons. By how
    5·1 answer
  • Snow that falls on the ground melts slowly. Snow that falls on Stefan’s nose melts very
    6·1 answer
  • The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. what is the binding energy (in j) of a 61co nucleus? (
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!