Atomic number is written in subscript:
Uranium atomic number =92
Mass of neutron is the superscript value times the quantity (moles):
3*1= 3
Atomic mass is approximately equivalent to the number of protons and neutrons in the atom (the mass number). It's written in superscript:
Kr=92
No. of neutrons = Mass number (in superscript) - Atomic number ( in subscript)
= 141-56= 85
No. of neutrons in reactants are: 3
Answer:
Explanation:
Looking at the atom, you see that there is 1 carbon atom and 2 oxygen atoms.
The chemical formula of Carbon is just C (from the periodic table), and the chemical formula of Oxygen is just O (from the periodic table).
When you create the chemical formula of a compound, you want to indicate how many atoms of each element there are. Here, since there are 2 oxygen atoms, you want to have some form of 
, and since there's only 1 carbon atom, you want to have some form of C.
Now, we just put it together: (this is btw carbon dioxide)
Hope this helps!
Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colourless, acidic and highly corrosive. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon).
