Answer: Acceleration can be defined as the rate at which velocity changes
Acceleration has the units m/s2.
Hope this helps! :D
Answer:
An atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other.
For example,
Al atom has 13 protons and 13 electrons. The number of positive and negative charge is equal thus it will be neutral atom.
While the atom of Al which have 13 proton and 10 electron is not neutral. The positive charge is greater than negative by 3. Which means 3 electrons are lose by Al atom and form cation "Al⁺³".
Thus an atom of Al which has 13 protons and 10 electrons is Al cation (Al⁺³)
Answer:
0.01M
Explanation:
Given paramters:
Volume of FeCl₂ = ?
Concentration = 0.945M
Number of molecules of O₂ = 4.32 x 10²¹molecules
Solution:
The balanced reaction equation is given below:
4FeCl₂ + 3O₂ → 2Fe₂O₃ + 4Cl₂
Now, to solve the problem we use mole relationship between the compounds.
We work from the known to the unknown compounds. Here, the known is the oxygen gas because from the given parameters we can estimate the number of moles of the reacting gas.
number of moles of O₂ = 
number of moles of O₂ = 
number of moles of O₂ = 0.007mole
now, from the reaction equation we find the number of moles of the FeCl₂:
3 mole of O₂ reacted with 4 moles of FeCl₂
0.007mole of O₂ reacted with 
= 0.0096mole O₂
Now to find the volume of FeCl₂ we use the expression below;
volume of FeCl₂ = 
= 
= 0.01L
Hey there!
The first one:
The 20 means it has 20 protons. The 42 means the sum of protons and neutrons is 42, so that means 20 protons plus 22 neutrons is 42 total. There is no charge noted, so the number of electrons is equal to the number of protons.
This atom has 20 protons, 22 neutrons, and 20 electrons.
The second one:
The 20 means it has 20 protons. The 44 means the sum of protons and neutrons is 44, so that means 20 protons plus 24 neutrons is 44 total. There is no charge noted, so the number of electrons is equal to the number of protons.
This atom has 20 protons, 24 neutrons, and 20 electrons.
Hope this helps!
Answer: protons and neutrons
Explanation: both of those subatomic particles are located in the nucleus and account for 99.99% of atomic mass
