Answer:
( 4, 1 )
Step-by-step explanation:
midpoint formula: (x1 + x2/ 2, y1 + y2/ 2)
(9-1/ 2, -6+8/ 2) -> (4,1)
2x - 9 is the algebraic notation.
Hope it helps!
Please mark brainliest!
It is indeed 70, you divid 63 by 90 and your answer should be .07 so if you add that to your starting 63 you get 70
We apply arrhenius equation to solve this problem which relates Kc to the change in temperature and that <span>ΔH° is the constant. The arrhenius eqn is :
ln (Kc2)/ ln (Kc1) = </span><span>ΔH°/R * [(1/T1)- (1/T2)] where T is in kelvin.
Thus,
</span>ln (0.575)/ ln (0.405) = <span>ΔH°/8.314 * [(1/(40+273)- (1/(90+273)]
</span><span>ΔH° = 11566.81 J/mol</span>
The number is 16.
I know this cause 4 can go into 16 four times. I now do 4 x 3 which is 12
