the answer is c) the speed and direction of travel must be constant
To find initial velocity, start by multiplying the acceleration by the time. Then, divide that number by 2 and write down the quotient you get. Next, divide the distance by the time and write down that quotient as well. Finally, subtract your first quotient from your second quotient to find the initial velocity.
Henry's law states that:
P1/C1 = P2/C2
Where P = Pressure, and C = Solubility
In this case, P1 = 8.0 atm, C1 = 0.55 g/l, P2 = 5.0 atm, C2 =??
Therefore,
C2 = (P2*C1)/P1 = (5*0.55)/8 = 0.344 g/l
