A solution of toluene(molecular weight 92.1) in benzene(molecular weight 78.1) is prepared. The mole fraction f toluene in the solution is 0.100. What is the molality of the solution? (A)0.1 (B)0.703 (C)0.921 (D)1.28 (E)1.42

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

it is a solid

explanation:

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answer carbon and three oxygen atoms;