1) a certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. the initial volume was 3.00 l \rm l and the initial pressure of chlorine was 1.45atm the piston was pushed down to change the volume to 1.00 lcalculate the final pressure of the gas if the temperature and number of moles of chlorine remain constant..
2) in an air-conditioned room at 19.0c a spherical balloon had the diameter of 50.0 cm when taken outside on a hot summer day, the balloon expanded to 51.0cm cm in diameter. what was the temperature outside? assume that the balloon is a perfect sphere and that the pressure and number of moles of air molecules remains the same.

What is the overall order of reaction for rate = k[no2]2 ? second order 3/2 order third order zero order none of the listed answers are correct

Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.

On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density