Answer:
= 2.94 atm
Explanation:
The total pressure () in the container is given by:
The pressure of the oxygen (
) and the pressure of the helium (
) can be calculated using the ideal gas law:
<u>Where</u>:
V: is the volume = 25.0 L
n: is the number of moles of the gases
R: is the gas constant = 0.082 Latm/(Kmol)
T: is the temperature = 298 K
First, we need to find the number of moles of the oxygen and the helium:
Where m is the mass of the gas and M is the molar mass
And the number of moles of helium is:
Now, we can find the pressure of the oxygen and the pressure of the helium:
Finally, the total pressure in the container is:
Therefore, the total pressure in the container is 2.94 atm.
I hope it helps you!
Answer:
You can pick any two from these:
- Visible light: red, orange, yellow, green, blue, violet.
Explanation:
Electromagnetic energy is the is the energy that travels in form of transverse waves produced by the perpendicular oscilations electrical and magnetic fields.
An important characteristic of electromagnetic energy (waves) is that they do not need a material medium to propagate (travel) but they can travel in vacuum. That is how the sun light gets to the Earth through space.
Depending of the wavelength and frequency (which are inversely related) each electromagnetic wave has different amount of energy, involves particular risks and finds different applications.
Among other uses, we can mention: radio waves and mcirowaves are useful for communications, in infrared transmits heat, visible light permits see the objects, ultraviolet may be used in security systems, x-rays and gamma rays have medical uses.
Answer:
Explanation: Sodium has an atomic number of 11, so it has 11 protons. The atomic mass is 23, so there are 23 − 11 = 12 neutrons. The charge is +1, so there is 1 more proton than electrons, so there are 10 electrons
Explanation:
Latent heat of fusion for ice is 33600J/k
Heat absorbed
- k_f×m
- 31.6×33600
- 1061,740mJ
- 1061J
