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Q: Why the bulb of the hydrometer is bigger than the stem?
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Why mercury is used in hydrometer?

A hydrometer consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright. Mercury has a higher density, thus a lower volume for the same weight than lead. It is a toxic liquid metal, but also more dangerous and difficult to clear up the mess when a glass hydrometer is broken


Can you plant a tulip bulb in one cubic centimeter of of dirt?

no, the bulb its self is bigger than that


Will hydrometer float higher in fresh air or salt water and why?

In salt water because a hydrometer sinks deeper if the liquid is less dense than water, The hydrometer floats higher if the liquid is denser than water.


Why is the scale of a hydrometer non linear?

The volume displaced to indicate a given change in Specific Gravity; e,g., 0.001, is less in higher SG liquids. If you do the math for a typical lab hydrometer, you will find that in a liquid with a SG near 1.100, you will have about 20% less stem travel than when it is near water at 1.000. The key to remember is that the weight of the liquid displaced is equal to the total weight of the hydrometer, not just the portion of it that is submerged.


How is a barometer different than a hydrometer?

Barometer is used to measure atmospheric pressure. Hydrometer is used to measure specific gravity.


Why the pycnometer method more accurate than the hydrometer method?

The pycnometer method is more accurate than the hydrometer method because it uses an analytical balance.


Why does a motor have a bigger resistance than a bulb?

There is no particular reason why a motor should have a bigger resistance than a bulb. A motor's resistance must depend on what current it draws at the particular voltage it was designed to run on. Equally, a bulb's resistance must depend on what current it draws at the particular voltage it was designed to run on. A particular motor may have a higher resistance than one kind of bulb but that same motor may have a lower resistance than another kind of bulb.


Why bulb of wbc smaller than rbc pipette?

Rbc pipette is bigger than the wbc pipette to dilute the blood with fluid.


How does calculated specific gravity compare to the hydrometer reading for the liquid?

The calculated specific gravity may be slightly different than the hydrometer reading. The calculated gravity is calculated using specific data while the hydrometer measures the liquid at a specific time and temperature.


How deep do you plant hosta bulbs?

Hosta have roots, not a bulb. You need to look at the stem and don't dig the hole any deeper than a foot.


How does the calculated specific gravity compare to the hydrometer reading for each liquid?

The calculated specific gravity may be slightly different than the hydrometer reading. The calculated gravity is calculated using specific data while the hydrometer measures the liquid at a specific time and temperature.


Why is it important for the stem to grow when the plant grows?

It's important for the stem to grow because if the other parts grow bigger than it, i'm pretty sure the plant will die because it can't carry all the weight.