Be sure to answer all parts. explain why the addition of hbr to alkenes a and c is regioselective, forming addition products b and d, respectively.8addition to alkene a is regioselective because: alkene a forms a primary carbocation, which is always more stable than a secondary carbocation. alkene a forms a resonance stabilized carbocation on the c closest to the o atom. alkene a forms an inductively destabilized carbocation on the c closest to the o atom. the br atom is less crowded on a primary carbon than on a secondary carbon. addition to alkene c is regioselective because: alkene c forms a secondary carbocation, which is always more stable than a primary carbocation. the br atom is less crowded on the carbon that is farther away from the cooch3 group. alkene c forms a carbocation that is resonance stabilized by the cooch3 group. alkene c forms a carbocation on the c farthest from the inductively destabilizing cooch3 group.

Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, and calculate its density. here is a summary of the steps required: add water by clicking and holding prepare a known volume of water button. until the desired volume of water has been added. if more than the desired volume is added, click the reset button. button and redo the procedure. a single click will add about 21.0 ml of water. to set the mass, click and hold weigh out metal button. until the desired amount of metal is added to the weighing pan. once the desired mass of the metal is added, release the button. transfer the metal to water and then click on calculate density button. to see how the density is calculated using water displacement to measure the volume of the solid. to save time you can approximate the initial volume of water to â±1 ml and the initial mass of the solid to â±1 g. for example, if you are asked to add 23 ml of water, add between 22 ml and 24 ml. which metals in each of the following sets will have equal density? check all that apply.

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?