The -Р
he
21. In the diagram below ZXOY = 120°.
Find the value of ZXOZ, ZZOZ', and
26. In the
strai
Calo
ry,
ZZ'OY
Z
Y
Z
(3x-9)
(2x+9)
(x+6)
183​

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!