A355-ml soft drink sample contains 0.133 mol of sucrose (table sugar). What is the molar concentration of sucrose in the
beverage?

0.375mol/L

Explanation:

Well you were given the mole of solute (n) =0.133 and the volume of solvent (V) =355mL

Note that the molar Conc. also called Molarity = (n) the mole of solute/ (V) the volume of solvent

But keep in mind that the volume should always be in liter (L). Therefore, convert mL to L by dividing 1000:

                  V=  355mL/1000 = 0.355L

In the end, we apply the formula:

M = n/V

M= 0.133/0.355 = 0.3746mol/L ≈ 0.375mol/L

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.

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