Answer:
vrcdcrxfbexcrxe try ugrzefthygf
Assuming that there is missing information in this question I’m just going to go ahead and say that it’s lower.
HNO3 (nitric acid) is a very strong acid which should be found on the lower end of the pH scale. While water, on the other hand, is neutral and found at a pH of 7.
So if you add one drop of a strong acid into a neutral solution of 100ml let’s say, one can assume that the pH of that solution is now very low and probably found between 1-3 on a pH scale.
Reminder:
-Acids are found between 1-6 on the pH scale. The lower the number the stronger the acid
-Bases are found between 8-14 on the pH scale. The higher the number the stronger the base
While staying in the same period, if we move from left to right across the period, the atomic radius decreases. The reason is, in a period the number of shells remain the same and the number of electrons and protons increase as we move across the period to the right. The increased electrons and protons attract each other with greater force and hence the atomic size decreases.
So the element on the left most will have the largest atomic radius. So the correct ans is Potassium. Potassium will have the largest atomic size among Potassium, Calcium and Scandium.
<h3>
Answer:</h3>
12 neutrons
<h3>
Explanation:</h3>
- A neutral atom is an atom that has no charge, which means it has no additional electrons or electrons removed from its energy levels.
- An atom is made up of sub-atomic particles neutrons and protons found in the nucleus and electrons found in the energy levels.
- The number of protons in the nucleus of a neutral atom is known as the atomic number.
- In a neutral atom, the atomic number is equal to the number of electrons as protons are equal to the number of electrons.
- The sum of protons and neutrons in the nucleus of an atom is known as the mass number of an atom.
Therefore;
Protons = Atomic number
Protons + neutrons = Mass number
Thus;
Neutrons = Mass number - protons or
= Mass number - atomic number
In this case;
Atomic number = 11
Mass number = 23
Thus;
Neutrons = mass number - atomic number
= 23 - 11
= 12 neutrons
Answer:
When marshmallows are toasted, a chemical change occurs. The sugar molecules in the marshmallow are being changed into carbon (1). Sugar can be changed into water molecules. ... The flame on stage - oxygen diffuses to the surface of the marshmallow from the surrounding air.
