It has 9 protons, 9 electrons and 10 neutrons.
An ionic compound is a compound between a metal and a non metal where the metal (normally from group 1 or 2) transferrs an electron to the non metal ( most commonly from group 6 or 7) . this is so that both atoms have a full outer shell of electrons. the metal gains a positive charge and the non metal a negative charge. they are held together by electrostatic forces of attraction. an example would be sodium chloride (salt) sodium is in group 1 and chlorine in group 7 so sodium transfers one electron :)
Saturated fats are when fatty acid contains carbon that are connected by a single bond. Unsaturated fats are when one or more carbons form a double bond with another carbon.
Ratio is the relationship between two number indicating how many times the first number containing the second number.
The ratio of carbon to oxygen is as follows
0.429 :0.571
multiply 1000 to remove the decimals
therefore the ratio of mass of carbon to mass of oxygen =429:571