What concentrations of acetic acid (pka = 4.76) and acetate would be required to prepare a 0.15 m buffer solution at ph 5.0? note that the concentration and/or ph value may differ from that in the first question. strategy 1. rearrange the henderson-hasselbalch equation to solve for the ratio of base (acetate) to acid (acetic acid), [a–]/[ha]. 2. use the mole fraction of acetate to calculate the concentration of acetate. 3. calculate the concentration of acetic acid. step 1: rearrange the henderson hasselbalch equation to solve for (a-)/(ha) if the solution is at ph 5.0

Which of the following statements is true about planck’s law

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Problem #3 (ch. 1, problem 15)the ideal gas law provides one way to estimate the pressure exerted by a gas on a container. the law isí‘ťí‘ť=푛푛푛푛푛푛푉푉more accurate estimates can be made with the van der waals equationí‘ťí‘ť=푛푛푛푛푛푛푉푉â’푛푛푟푟â’푞푞푛푛2푉푉2where the term nb is a correction for the volume of the molecules and the term an2/v2is a correction for molecular attractions. the values of a and b depend on the type of gas. the gas constant is r, the absolutetemperature is t, the gas volume is v, and the number of moles of gas molecules is indicated by n. if n = 1 mol of an ideal gas were confined to a volume of v = 22.41 l at a temperature of 0â°c (273.2k), it would exert a pressure of 1 atm. in these units, r = 0.0826.for chlorine gas (cl2), a = 6.49 and b = 0.0562. compare the pressure estimates given by the ideal gas law and the van der waals equation for 1 mol of cl2 in 22.41 l at 273.2 k. what is the main cause of the difference in the two pressure estimates, the molecular volume or the molecular attractions?