What would be the difference in precision and accuracy if I chose to use a graduated cylinder instead of a buret? Explain.

Suppose you were measuring out an organic liquid, and some of it is evaporated after you have performed the volumetric measurement while you are weighing out the sample. What effect would this have on the densities you calculated? Will you overestimate or underestimate the density of the liquid? Would this cause poor accuracy, low precision, or both? Explain briefly.

Which statement about a volumetric flask is correct?     Each volumetric flask has several calibration marks (on the neck of the flask), so measuring of several volumes is possible.     A volumetric flask is used when a graduated cylinder is not available.         Each flask only measures one particular volume.     A graduated cylinder measures volume more precisely and accurately than a volumetric flask.

While creating a piece of art work, a student becomes curious about the ink he is using to create his art. He wonders if the in is a pure substance or a mixture. The ink appears to be uniform throughout, but separates when a chromatography experimer is performed on it, leaving multiple marks of different colors along the chromatography paper. Using his observations of the properties of the ink, the student can classify it as a heterogeneous mixture. solution. compound. element.

Take the mass measurement with nitrogen (28 dalton or atomic mass units per molecule) and the mass measurement with helium (4 daltons per atom) and use the difference between the measured masses to find the mass of 1 dalton (one atomic mass unit) in grams. The standard value of the dalton is 1.66053906660×10−27 kg with an uncertainty of ±50 in the last two figures. Can you identify the sources of error in your measurement?

number 3 and 4 of this part ty in analytical chem

I don't know where to start. I found the average.

A student find an irregular metal object. Student wanted to know the identity of this metal. As a chemistry student, you learnt that finding density of the object would be cheap, easy, and reliable method to find the identity. Explain in detail, how would you find the identity of this metal using density? When you explain the method, you show all the steps you will follow (measuring, recording, calculations,.etc) in the laboratory. For example, if you are using a measuring cylinder for taking volume, you must draw diagrams to show every aspects including scale on the cylinder, meniscus, reading,.etc

A volumetric flask that is to be used to measure volume is supposed to be marked at 10.00 ml but is actually marked at 9.95 ml. This error affects its precision. True or false? please explain

Iron has a density of 7.86 g/cm° (1 cm° = 1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 3.62 kg . Note that the density is provided in different units of volume and mass than the desired units of volume (dL) and the given units of mass (kg). You will need to express the density in kg/dL ( 1 cm3 1 mL) before calculating the volume for the piece of iron. Express your answer to three significant figures.