Answer:
x=1/4
Step-by-step explanation:
M(Pb(C2H5)4 = M(PB)*1 + 4*( M(C)*2 + M(H)*5)
M(Pb(C2H5)4 = 207.2 + 4(12.0*2 + 1.0*5)
M(Pb(C2H5)4 = 207.2 + 4(28.0 + 5)
M(Pb(C2H5)4 = 207.2 + 4*33
M(Pb(C2H5)4 = 207.2 + 132
M(Pb(C2H5)4 = 339.2 g/mol
Hope this helps !
Photon
Answer:
-x +7
Step-by-step explanation:
Combine like terms.
Rewrite as 2x + (-3x) + 6 + 1
Combining your "x" terms gives you 2x + (-3x), or 2x - 3x = -1x or -x
Combining your integer terms gives you 6 + 1 = 7.
Recombining them gives you -x + 7.
First, you round your numbers:
162% to 160
and
79 to 80
I would divide 160 (%) by 80 which, obviously, is 2
My best estimate would be 2
Hope this helps!
(If you have any questions about how i got this answer, feel free to ask in the comments. Also, if you find this answer helpful, please consider marking it brainliest, Thanks!)
