Please read question/answer choices carefully and answer ALL questions with a clear and simple explanation. Incorrect or Incomplete answers will not be given any credit (thumbs down). Thank you!Q1. Predict the order of elution of a mixture of benzyl alcohol, biphenyl, benzoic acid, and methyl benzoate from an Alumina column in column chromatography. AND WHY (SIMPLE EXPLANATION)Q2. Calculate the percent yield of Methyl nitrobenzoate, if 6 grams of Methyl benzoate produced 3 grams of Methyl nitrobenzoate during the nitration experiment. Q3. According to the news, the Mississippi River is polluted with toxic Dioxin. You have a pure sample of Dioxin. How do you determine that the news is true or not?Q4. Explain the Retention time, in GC. What will happen to retention time, if you increase the detector temperature?

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.

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

Is a pencil falling to the floor anon contact force, a force, or a contact force