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
OLga [1]
3 years ago
10

Please help me I’m desperate plz help and fast

Chemistry
1 answer:
taurus [48]3 years ago
8 0

Answer:c

Explanation:

You might be interested in
element m is a metal and its chloride has the formula mcl2. to which group of the periodic table does m most likely belong
Triss [41]
It will belong to the metals because metals bond with nonmetals like chlorine to form ionic compounds
3 0
3 years ago
Read 2 more answers
In a given substance, as the temperature of a substance increases, the volume of that substance _____.
Molodets [167]

Answer:

C: increases

Explanation:

Temperature is directly proportional to volume. If the temperature of a substance increases, the volume also increases. If the temperature decreases the volume also decreases.

According to Charles's law "the volume of fixed mass of gas varies directly as its absolute temperature if the pressure remains constant". Although this is an ideal gas law, it is also applicable to most substances.

As the temperature is raised, the volume also behaves proportionally that way.  

5 0
4 years ago
Methane at 10 mpa and 300 k is heated at constant pressure until its volume has increased by 80 percent. determine the final tem
katovenus [111]
When you assume that the gas is behaving ideally, the gas molecules are very far from each other that they do not have any intermolecular forces. If it behaves this way, you can assume the ideal gas equation:

PV = nRT, where

P is the pressure
V is the volume
n is the number of moles
R is a gas constant
T is the absolute temperature

When the process goes under constant pressure (and assuming same number of moles),

P/nR = T/V = constant, therefore,

T₁/V₁=T₂/V₂

If V₂ = V₁(1+0.8) = 1.8V₁, then,

T₂/T₁ = 1.8V₁/V₁

Cancelling V₁,

T₂/300=1.8
T₂ =540 K

If you do not assume ideal gas, you use the compressibility factor, z. The gas equation would now become

PV =znRT

However, we cannot solve this because we don't know the value of z₁ and z₂. There will be more unknowns than given so we won't be able to solve the problem. But definitely, the compressibility factor method is more accurate because it does not assume ideality.

7 0
3 years ago
How many moles are present in 10.5 x 10^23 atoms of helium?
Usimov [2.4K]

10.5 \times  {10}^{23}
multiply by (6.02 times 10^23 atoms)/(1mole, cancel out atoms)
4 0
3 years ago
Which term names the concentration of salts dissolved in a liquid?
Viefleur [7K]
Hey there!
The answer is D, Salinity.
Salinity is the concentration of salt in water. Ocean water often has high salinity and this can contribute to things like upwelling and water density- but these all start from salinity.
Hope this helps!
4 0
4 years ago
Read 2 more answers
Other questions:
  • How many neutrons does bromine have
    10·1 answer
  • Which city is located at 15 degrees south, 50 degrees east
    12·2 answers
  • 2. How does the way elements are grouped in the periodic table serve as an advantage to scientists?
    11·1 answer
  • jan is holding an ice cube. what causes the ice to melt? thermal energy from the ice is transferred to the air. thermal energy f
    12·2 answers
  • A sample of nitrogen gas (N2) containing 1.5 x10^23 particles has the same number of particles as a sample containing:
    10·1 answer
  • A) Earlier you were told that of all of the 14 solutes you will be studying, the only one that is not appreciably ionized in wat
    10·1 answer
  • 4. What is the percent by mass of tungsten in the calcium tungstate compound CaWO3, commonly
    6·1 answer
  • PLEASEEEE HELPPP??????
    8·2 answers
  • Help for extra points & brainlest !
    6·2 answers
  • Correctly label the picture with the correct phase
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!