In the box provided, write a brief explanation of what assumption is made in order to determine the molecular weight of your unknown solute when it is dissolved in cyclohexane. for which factor in the expression for the freezing point depression do you not collect data?

The consumption of fossil fuels could be

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If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s