Approximately 1 gram/millilitre for the water, but not all small beakers of water have the same mass. In fact, it's much more likely the masses differ than are the same. Are you trying to fake a lab exercise or is this just a silly question?
Volume of water in 400mL beaker as measured with a graduated cylinder
400 grammes
You must obtain and subtract the mass of the beaker.
the beaker can hold a different amount of liquid according to the size and mass of the beaker.
You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
Generally, a beaker (a glass jar) is used to measure volume (litres, gallons, pints, etc), not mass (kilograms, pounds, stone, etc). However, if you know the volume and density of the material in the beaker, you should be able to calculate its mass in kilograms. Density = Mass/Volume (mass over volume)
The mass of 100 ml of standard water under standard conditions is 100 grams, regardless of what it's in. We have no way of knowing the mass of the empty beaker.
You must obtain and subtract the mass of the beaker.
mass by difference is an indirect way to find the mass of an object. For example, if you know the mass of a 'beaker and the substance in it' and the 'mass of the beaker', you can determine the mass of the substance by subtracting (mass of beaker + substance) - (mass of beaker)
The answer will depend on the capacity of the beaker. There is no information about that in the question.
86 g
Subtract the mass of the beaker from the total weight.
between which two of these times was the mass of the contents of the beaker
32 g
the beaker can hold a different amount of liquid according to the size and mass of the beaker.
You can do that or you can zero balance the scale with the empty beaker on it before adding the substance to be measured to the beaker.
Mass is always conserved. It is not clear what the experimental setup is, but if a beaker contained a liquid, it is very likely that some of that mass evaporated - went into the atmosphere.
Measure the mass of the beaker including the powdered solid. Then empty the beaker, make sure ALL traces of the powder have been removed and measure the mass of the empty beaker. The difference between the two measure is the measure of the powdered solid.
a beaker