Acompound has the empirical formula c. h.no, if its molar mass is 116,1
g/mol, what is the molecular formula of the compound?

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92