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The size of a drop of any liquid depends on how the drop is created, so it is not possible to say as a general rule that any particular amount of water is in a "drop of water." You first have to know the size of the drop of water.
1 drop = 1 gram
It 1.00 gram/cm3
The density of water at standard temperature and pressure is 1 gram/milliliter. The size of the sample is irrelevant. If the sample is pure, then one drop of it has the same density as a tankerful of it has.
E.coli is gram negative bacteria it give pink colour for staining bacteri with gram stain first make smear then put a drop of crstal violet on smear for one minute now wash it with distill water and then add a drop of iodine a moderator for 30 sec. and wash it drop by drop with alcohol and then with distill water now add counter stain saffranin for one minute and wash with distill water now look the slide under oil immersion of microscope or 100x
One milliliter of pure, clean water at standard temperature and pressurehas a mass of 1 gram, or 0.001 kilogram.
== == There are about 20 drops of water in 1 milliliter. Eye drops are about the same. For other liquids, the number depends on the viscosity of the liquid, which affects the average drop size. Thicker, more viscous fluids are likely to produce larger drops and therefore fewer drops per milliliter. Note that 1 milliliter is equal to 1 cc.
It depends on the liquid. If they are water drops they can vary in size. However a drop of water is reckoned to be about 0.05 ml in volume. I ml of water weighs 1 gm, so one drop of water weighs 0.05 gms There are 1000 milligrams in a gram, so (0.05 x 1000 =) 50 milligrams would be the approximate weight of one drop of water.
I took a 1/2 oz eyedrop bottle and weighed out 5 gram or the weight of a nickel. The number surprized me after taking around 10 minutes. my count was 117 but i rounded it off to a 120. Which i devided by 5 to come up with 24 eyedrops for 1 gram. So 1/24 of a gram would weigh about 0.0417 grams. Nice experiment. The size of a drop of water varies a lot. The "official" size ranges from about 50 ul to about 99 ul depending on country and system. 60 ul seems to be a common size. Because a liter of water weights a kilogram a drop of 60 ul weighs .06 gram.
I took a 1/2 oz eyedrop bottle and weighed out 5 gram or the weight of a nickel. The number surprized me after taking around 10 minutes. my count was 117 but i rounded it off to a 120. Which i devided by 5 to come up with 24 eyedrops for 1 gram. So 1/24 of a gram would weigh about 0.0417 grams. Nice experiment. The size of a drop of water varies a lot. The "official" size ranges from about 50 ul to about 99 ul depending on country and system. 60 ul seems to be a common size. Because a liter of water weights a kilogram a drop of 60 ul weighs .06 gram.
The density of water is 1 gram per cm3 .
1 gram