questions\n1. which of the following pieces of equipment is designed to deliver or contain one specific…

questions\n1. which of the following pieces of equipment is designed to deliver or contain one specific volume of liquid?\na. graduated cylinder\nb. pipet\nc. buret\nexplain your answer.\n2. suppose a 10 - ml graduated cylinder is used that has calibration marks representing each ml and 0.1 ml. according to the rules for significant figures, accurate readings should be estimated and recorded to the nearest\na. 1.0 ml.\nb. 0.1 ml.\nc. 0.01 ml.\nd. 0.001 ml.\nexplain your answer:\n3. a student determined the volume of water from a pipet by the method described in part b. the volume determined on a mass basis was consistently greater than 10.00 ml. which of the following would account for this result?\na. the meniscus was allowed to fall below the mark on the pipet before the sample was transferred to the weighed beaker.\nb. the remaining contents were blown out of the pipet into the beaker after the pipet had drained.\nc. some of the water sample was spilled from the beaker before it was weighed.\nd. more than one response is correct.\nexplain your answer:\n4. a student fills a buret with distilled water, adjusts the meniscus to a reading of 0.00 ml, and allows water to drain out until a reading of 10.00 ml is obtained. the water sample, weighed by difference, has a mass of 9.72 g. which of the following experimental errors will account for the large difference between the volume according to readings and the volume according to mass?\na. initially the meniscus was above the 0.00 - ml mark.\nb. the final meniscus was below the 10.00 - ml mark.\nc. air was not cleared from the buret tip before delivering the sample.\nd. water leaked from the buret into the beaker after the final buret reading was taken.\nexplain your answer:

questions\n1. which of the following pieces of equipment is designed to deliver or contain one specific volume of liquid?\na. graduated cylinder\nb. pipet\nc. buret\nexplain your answer.\n2. suppose a 10 - ml graduated cylinder is used that has calibration marks representing each ml and 0.1 ml. according to the rules for significant figures, accurate readings should be estimated and recorded to the nearest\na. 1.0 ml.\nb. 0.1 ml.\nc. 0.01 ml.\nd. 0.001 ml.\nexplain your answer:\n3. a student determined the volume of water from a pipet by the method described in part b. the volume determined on a mass basis was consistently greater than 10.00 ml. which of the following would account for this result?\na. the meniscus was allowed to fall below the mark on the pipet before the sample was transferred to the weighed beaker.\nb. the remaining contents were blown out of the pipet into the beaker after the pipet had drained.\nc. some of the water sample was spilled from the beaker before it was weighed.\nd. more than one response is correct.\nexplain your answer:\n4. a student fills a buret with distilled water, adjusts the meniscus to a reading of 0.00 ml, and allows water to drain out until a reading of 10.00 ml is obtained. the water sample, weighed by difference, has a mass of 9.72 g. which of the following experimental errors will account for the large difference between the volume according to readings and the volume according to mass?\na. initially the meniscus was above the 0.00 - ml mark.\nb. the final meniscus was below the 10.00 - ml mark.\nc. air was not cleared from the buret tip before delivering the sample.\nd. water leaked from the buret into the beaker after the final buret reading was taken.\nexplain your answer:

Answer

1.

Brief Explanations:

A pipet is designed to deliver or contain one specific volume of liquid. A graduated cylinder is used for approximate volume measurements of liquids and a buret is used for dispensing variable - known volumes of liquid during titrations.

Answer:

b. Pipet

2.

Brief Explanations:

When taking measurements with a graduated cylinder, the accuracy is one - tenth of the smallest calibration mark. Since the smallest calibration mark is 0.1 mL, readings should be estimated and recorded to the nearest 0.01 mL.

Answer:

c. 0.01 mL

3.

Brief Explanations:

If the remaining contents are blown out of the pipet into the beaker after it has drained, extra liquid will be added to the beaker, making the volume determined by mass greater than the volume the pipet is supposed to deliver. Option a would lead to a lower volume transferred and option c would lead to a lower mass reading and lower calculated volume.

Answer:

b. The remaining contents were blown out of the pipet into the beaker after the pipet had drained.

4.

Brief Explanations:

If air was not cleared from the buret tip before delivering the sample, the volume read from the buret would include the volume of air, while the mass measurement would only account for the mass of water. This would cause a large difference between the volume according to readings and the volume according to mass.

Answer:

c. Air was not cleared from the buret tip before delivering the sample.