Answer:
Oxygen, it's supposed to have six valenge electrons.
Explanation:
Count the dots on the oxygen atom, you'll see seven, but there's supposed to be six.
Answer:
Propane and butane are pure substances, which means that each one of them is made of only one type of molecule—propane molecules or butane molecules. In contrast, gasoline, diesel, and kerosene are not pure substances; they are mixtures of more than one substance.
Explanation:
Hope it is helpful...
The frequency of radio waves at the two stations are:
1. WIL-92.3 : Frequency = 92.3 MHz (mega hertz)
2. KSHE-94.7 : Frequency = 94.7 MHz
The wavelength (λ) and frequency (ν) are related as:
ν = c/λ ------(1)
Energy (E), frequency (ν) and wavelength (λ) are related as:
E = hν -----(2)
(or)
E = hc/λ ----(3)
A) Based on equation (2), higher the frequency higher is the energy. Therefore, station KSHE broadcasts waves with higher energy
B) Based on equation (1), higher the frequency lower will be the wavelength. Station KSHE will broadcast waves with shorter wavelength
C) KSHE will broadcast waves with higher frequency
Answer:
V₂ = 5.07 L
Explanation:
Given data:
Initial volume of balloon = 7.60 L
Initial number of moles of oxygen = 2.67 mol
Final number of moles of oxygen = 1.78 mol
Final volume of balloon = ?
Solution:
According to the Avogadro law,
Number of moles of gas and volume are directly proportional to each other at constant temperature and constant pressure.
Mathematical relationship:
V₁/n₁ = V₂/n₂
No we will put the values.
7.60 L / 2.67 mol = V₂/1.78 mol
V₂ = 7.60 L× 1.78 mol/ 2.67 mol
V₂ = 13.528 L. mol /2.67 mol
V₂ = 5.07 L