How many grams of naoh would be needed to be dissolved in 450 ml of water to make a 2.3 m solution?

41.4 grams of NaOH

Explanation:

Molarity is the data of moles of solute in 1L of solvent, so 2.3 moles of NaOH are contained in 1L or which is the same, 1000mL.

Let's find out the moles in our volume 450 mL by a rule of three:

In 1000 mL we have 2.3 moles

In 450 mL we have (450. 2.3)/1000 = 1.035 moles

Moles . molar mass = mass

1.035 m . 40 g/m = 41.4 g

petroleum? coal maybe?

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.