Question

Sodium reacts with chlorine gas to form sodium chloride. 2Na + Cl₂ = 2NaCl What mass of chlorine gas will react with 92.0g of sodium?

Answer 1

how do chemist count things?

Answer 2

in moles

Answer 3

so the equation is a molecular ratio of the different compounds involved in the reaction, so you have to convert the grams of sodiums to moles and then use the ratios of the equation

Answer 4

multiply those together and you have moles of chlorine gas which you convert to grams using the molar mass 35.45g/mol

Answer 5

how do I convert the grams of sodium into moles?

Answer 6

you multiply the reciprocal of the molar mass
\[92.0 g Na(\frac{ 1 mol }{ 22.99g })\]

Answer 7

where did the 22.9g come from?

Answer 8

that is the molar mass of Na

Answer 9

that comes from the periodic table

Answer 10

Oh, ok. So it would be 4.0 mol, right?

Answer 11

yeah