25 g of iron is added to a graduated cylinder containing 45 mL of water. The water level rises to the 50 mL mark. From this information, calculate the density of the iron.

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.  

the answer is true. hope it .

your answer is c) plasma

~*"auba14"*~

answer: i dont know the answer but this might

explanation:

l