A student walks at a brisk 3.50 mi/hr. Calculate the student's speed in yards/minute.
I have 4 questions just like this one. Could you tell me step by step on how to do the double conversions? Thanks!
Pb(NO3)2 + Na2SO4 ==>
Divide this into
Pb(NO3) is Pb + element; NO3^- - element.
Na2SO4 is Na + element; SO4^2- l element.
+ of #1 goes with - of #2
+ of #2 goes with - of #1.
(Actually, I think that's the hard way to do it; you just change partners between the two compounds. Pb goes with SO4 and NO3 goes with Na.)
Pb(NO3)2 + Na2SO4 ==> PbSO4 + 2NaNO3