Answer:
A) False
B) True
C) True
D) True
Explanation:
A) False. If the charge of the atom is +2 means that you have two protons more than number of electrons. If you have 36 electrons you must have <em>38 protons.</em> Also, the electrons are not in the nucleus.
B) True. The isotope of X contains 38 protons, two more than the electron number.
C) True. The mass number is the number of protons + number of neutrons.
If the mass number is 79 and there are 38 protons you must have 41 neutrons.
D) True. You can now the identity of the atom with the number of protons that is the same than atomic number. The strontium, Sr, is the atom with 38 as atomic number.
I hope it helps!
Answer:
The acceleration is: 
Explanation:
Given
--- The initial velocity
--- time
-- The final velocity
Required
Determine the acceleration
To do this, we make use of the first equation of motion
We used negative because the car was coming to stop.
This gives:
Collect like terms
Solve for a
I think the answer is b because that is true
Nuclear energy comes from splitting of Barium atom to form Krypton atom
Answer:
It comes from the chemical reaction of The wax and the gas because the wax is made up of carbon-based chemicals so the gas and carbon make the candle light =)
Explanation:
