Answer:
392 g
Explanation:
The given concentration tells us that<em> in 100 g of solution, there would be 15.3 g of 2-ethyltoluene</em>.
With that in mind we can<u> calculate how many grams of solution would contain 60.0 g of 2-ethyltoluene</u>:
- Mass of solution * 15.3 / 100 = 60.0 g 2-ethyltoluene
Answer:
Electrons do not follow circular orbits around the nucleus
Explanation:
Bohr's model of the atom is a combination of elements of quantum theory and classical physics in approaching the problem of the hydrogen atom. According to Neils Bohr, stationary states exist in which the energy of the electron is constant. These stationary states were referred to as circular orbits which encompasses the nucleus of the atom. Each orbit is characterized by a principal quantum number (n). Energy is absorbed or emitted when an electron transits between stationary states in the atom.
Sommerfeld improved on Bohr's proposal by postulating that instead of considering the electron in circular orbits, electrons actually orbited around the nucleus in elliptical orbits, this became a significant improvement on Bohr's model of the atom until the wave mechanical model of Erwin Schrödinger was proposed.
Answer:
Add water to the lemon juice to dilute it.
Explanation:
pH value is the measure of alkalinity or acidity of a substance. The pH scale range from 0-14 . The lower the pH value the higher the acidity while the higher the pH value the higher the alkalinity. This simply means on the pH scale , if the pH value is 7 it depicts neutrality. 7 upwards indicates an increasing alkalinity while 7 downwards indicates an increasing acidity.
Acidic substance possess an hydrogen ion (H+) while alkaline substance possess more of hydroxide ions(OH-).
The pH value of lemon juice is usually low at a rate of 2 to 4 pH value . That simply means lemon juice is acidic and contains more hydrogen ions. The best option to increase the pH value of 2 is adding water molecule to neutralize it acidity content.
Adding water molecules(H20) will decrease the acidity and reduce the hydrogen ions that contributes to lemon's juice acidity and invariably increase it pH value.
