Chemical Equations and Formulas
4
If you start with 5 grams of
carbon on the reactant side,
how many grams of carbon
should you end with?
Reactant: 5 grams of Carbon
© The Science Duo

You will end up with 5g of carbon

Explanation:

If one starts a reaction with 5g of carbon, they will end up 5g of carbon at the end of the reaction.

Chemical reactions obey the law of conservation of mass.

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.