What apparatus is used in measuring grams aside from measuring scales?

Question

the choices include beaker and graduated cylinder. which one is the right one?

Answer 1

Neither a beaker nor a graduated cylinder is normally used for measuring grams. A graduated cylinder specifically measures milliliters. A beaker is not necessarily a measuring device, but it could be used to measure the mass (i.e., grams) of a sample of material as long as the mass of the beaker itself is already known.

Answer 2

If you were measuring a liquid with a known mass per unit volume, for instance x grams per milliliter, then a graduated cylinder could be used for measuring the weight of a liquid. You would obviously have to know how to read a meniscus, that is, the sort of half moon created by the surface tension of the liquid against the air. The slimmer the container, the more accurate the reading, therefore a narrow graduated cylinder would give you a better reading that a beaker, which is relatively fat, even if the beaker itself is graduated.

Answer 3

The metric system is remarkable!

Remember ... 1g of water = 1mL of water!

If you need to measure something other than water, all you have to do is figure out the difference between the molecular weight of 1mL of water and 1mL of the substance you need to measure.

My job requires that I weigh samples of hydrogen peroxide (H2O2). Since, compared to H2O, there is one extra oxygen molecule, the conversion factor is 1mL H2O = 1.23mL H2O2.

So ... your answer is the graduated cylinder. A beaker does not give accurate enough readings to allow you to measure grams without the use of a scale. A calibrated graduated cylinder, when read correctly, can allow you to read the grams of a compound in a specified volume of liquid.

Answer 4

well. it depends on whether the container is labeled "to deliver" or "to contain" if you're going to be nit-picky about precision and accuracy (how often do you want to duplicate or how close to correct you want to be with your results)...and then you have that whole messy business of conversions; given the right information (i.e, volume, density, temperature, pressure), you can (back)calculate anything.