In a chemical reaction represented by the general equation a+ b = c + d, there are 4 distinct mole ratios that can be written. true or false?

The statement is False Statement.

Explanation:

we are given a chemical reaction represented by the general equation

A + B = C + D,

since we are not given information regarding number of moles of any of A, B , C or D that are part of the chemical reaction so we take it to be equal to one mole by default.

so since in the given equation each of A, B, C, and D have equal no. of moles say equal to 1 then according to the given equation there can not be 4 distinct mole ratios hence the answer is false.

14,16 18 reacts with group

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.