Nitrogen monoxide reacts with chlorine at high temperature according to the equation, 2 NO(g) + Cl2(g) → 2 NOCl(g) In a certain reaction mixture the rate of formation of NOCl(g) was found to be 4.50 x 10‑4 mol L‑1 s‑1. What is the rate of consumption of NO(g)?

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.  

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

i think its 5049.

i hope this !

the answer is barium and copper bromide