Seawater is made up of water and salt; they are together physically but not chemically (you can prove that because they can be separated as water and salt by physical methods, e.g. distillation, filtration). A physical combination is called a mixture, a chemical combination is called a compound.
Answer: The frequency of the wave is 0.5 hertz.
Explanation:
= Frequency of the wave
= speed of the light in m/s
= Wavelength of the wave.
Here in question we are given with speed of the infrared light. So, we will replace the value of speed of light(c) from the given value of the speed of the infrared light.
Speed of infrared light = 6 m/s
The frequency of the wave is 0.5 hertz.
Answer:
[Cl⁻] = 1.2 M
Explanation:
Equation of the disssociation of Iron (II) chloride is given below:
FeCl₃ -------> Fe³⁺ + 2Cl⁻
from the dissociation equation, 3 moles of Cl ions are produced from the dissociation of FeCl₃.
In a 0.40 M solution of FeCl₃, the concentration of Cl⁻ ions will be 0.40 * 3 = 1.20 M
Therefore, the concentration of Cl⁻ ions, [Cl⁻] = 1.2M
The gas is most likely methane (CH₄)
<h3>Further explanation</h3>
In general, the gas equation can be written
where
P = pressure, atm
V = volume, liter
n = number of moles
R = gas constant = 0.08205 l.atm / mol K
T = temperature, Kelvin
So the gas is most likely methane (CH₄ )
A is correct answer.
<span>The expansion of landfills with too much garbage to recycle.
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Hope it helped you.
-Charlie
