In an appropriate reference, read a discussion of mass and volume measurements.

Question

In an appropriate reference, read a discussion of mass and volume measurements. Briefly describe two problems that can occur in this experiment if a piece of metal is carelessly dropped into a graduated cylinder partially filled with water. The slope of a plot comparing the masses of several different samples of the same substance to the corresponding volumes of water displaced by the samples is 1.2. Determine the density and possible identity of the substance, using Table 2. Calculate the volume of water, in milliliters, that would be displaced by 1.82 g of cobalt. See Table 2.

Explanation / Answer

If we throw a piece of metal, then we will:

- Lose mass of metal (expect less reactant)

- Increase volume (incorrectly relate other calculations)

Q3

N/A

Q4

Volume of water in mL that will be desplaced by 1.82 g of cobalt

Density of cobalt = 8.90 g/mL

D = mass/volume

V = mass/D = 1.82/8.90 = 0.20449 mL will be displaced

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