A single replacement reaction will occur when a piece of magnesium is dropped into a solution of nickel(?) nitrate. Todd reacted 3.582 g of anhydrous nickel(?) nitrate with an excess amount of magnesium metal. The nickel product of the reaction was dried and had a mass of 0.836 g.-Calculate the moles of nickel formed.-Calculate the mass of nitrate in the original anhydrous nickel(?) nitrate compound.-Calculate the moles of nitrate in the original anhydrate.-Calculate the nitrate to nickel mole ratio, and write formula with the Roman #. -Write the overall balanced chemical equation for this reaction.-Write the balanced net ionic equation for this reaction.

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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.  

it would be d. henry moseley

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