An experiment requires you to add 0.05 ml of solution X and 100 µl of solution Y to 0.85 ml of water. How many and what type(s) of pipette(s) are required?

    One; a p1000
    Two; a p200 and a p1000
    Two; a p20 and a p1000
    Three; a p20, a p200 and a p1000

Answer 1

The best option is Two: a P100 and a p1000.

The volume ranges of the pipette types are:

#ulbb("Type"color(white)(m)"Volumes/µL")# #"P20"color(white)(mmmml) "2 -20"# #"P200"color(white)(mmml) "20 -200"# #"P1000"color(white)(mml) "200 -1000"#

Thus, to pipet volumes of 50 µL, 100 µL, and 850 µL, you would use two types of pipette:

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Answer 2

To add 0.05 ml of solution X, a micropipette with a volume range that includes 0.05 ml is required. To add 100 µl of solution Y, a micropipette with a volume range that includes 100 µl is needed. Therefore, two micropipettes are required: one for solution X and one for solution Y.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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