When solid aluminum, Al, is placed into a solution of copper (II) nitrate, Cu(NO3)2, a reaction occurs. The balanced equation for the reaction is:

2AL(s)+3Cu(NO3)2(aq) 3Cu(s)+2AL(NO3)3(aq)

which of the following is true if 4.0 mol of aluminum reacts with 4.0 mol of copper (ll) nitrate

petroleum? coal maybe?

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

what does the table look like

може ли да зареждате повече информация, моля