Wearing short pants is allowed in the lab when it is hot outside

You should use a beaker to measure the mass of a gas

You should pour concentrated acid into water to safely mix the two liquids

The endpoint of a titration is always when the pH of the analyte is neutral

You can recover all solid from filter paper after using vacuum filtration

Placing your head in the hoods while working on an experiment is NOT allowed

If a white solid forms after mixing two colorless, transparent liquids together, a chemical change has occurred

A solid will form if you mix equal molar solutions of AgNO3 and NaCl together

How would you determine the density of a cubed object that has defined edges? The cube floats when placed in water

When adding gasoline to a water and honey mixture, the gasoline floats to the top, honey goes to the bottom and water is in the middle. Which liquid is the most dense?

The following reaction occurs when a piece of zinc metal is placed into a solution of copper (II) sulfate:

Zn(s) + CuSO4(aq) -> ZnSO4(aq) + Cu(s)

A titration between the analyte ascorbic acid, and the titrant sodium hydroxide was performed. Which solution would be in burette?

A solution was made at room temperature by dissolving an excess amount of a solid in water to the point that no more solid can dissolve. What can you do to get the undissolved solid to dissolve

A mixture of Pyrex glass, water, sodium chloride and oil needs to be separated. How would you separate the glass out from the other compounds

Two gases, gas Y and gas O, were placed at opposite ends of a tube and allowed to travel to a meeting point between the two gases. If gas Y traveled 2.49 inches and gas O traveled 0.341 inches along a tube that is 2.831 inches, which gas is heavier?

An unknown amount of potassium iodide was added to water in a beaker. How can you recover and determine the mass of the potassium iodide?

A student weighed out 3.87 g of H2PtCl6 and added it to water. How many moles of the compound did the student add to water?

A student added 20.5 mL of HNO3 to a 30 mL graduated cylinder and the same volume to a 100 mL graduated cylinder. Which volume would provide the more accurate volume of HNO3?

A researcher filled a burette to the 25.25 mL mark with water and added enough water to a flask until the 43.10 mL mark on the burette. How much water did the researcher add to the flask?

A student spilled a drop of 3.0 M HCl on the bench. The student then obtained a paper towel and wiped up the spill. The student then left the lab. What did the student do incorrectly?

Nickel (II) sulfate is a dark green solution and was added to a 0.1 M solution of HCl, which is transparent and colorless. The resulting solution after mixing the two was a bright lime green color. Why was this the case?

A student forgot to turn on the aspirator in their vacuum filtration apparatus. They began to pour a mixture of Fe(OH)3 and water onto their filter paper on their Büchner funnel. What happens to their filtration?

A mixture of Na+ , Cu 2+, and Zn2+ are mixed together in solution in water. What would be the best way to isolate the sodium cation from the other two cations?

A mixture of Cl- , I- , and OH- are in a water based solution. What cation would you add that would form a precipitate with each anion?

Antifreeze is soluble in water due to containing ethylene glycol which is a polar compound. Would antifreeze dissolve in vegetable oil based on this information?

How many grams are in 9.47 x 10^-2 mol of NiSO4 · 6 H2O?

Which instrument would be ideal for transferring an arbitrary large amount of a liquid?

While performing a titration using phenolphthalein indicator, the student obtained a solution that became very dark magenta after adding the NaOH titrant. What does this tell you about the titration condition?