(A) Some of the water in the graduated cylinder splashes out when the sample is dropped into the cylinder. Answer:
The calculated water displacement will be lower there is less water in the cylinder Therefore
, the measured density will be greater than the true value. A higher volume would result in lower density.
How would the presence of bubbles in the graduated cylinder affect your results?
How would the presence of bubbles in the graduated cylinder affect your results? … Answer: Any water or air bubble adhering to the submerged sample
will cause an error in the next volume measurement
, volume may increase. A higher volume would result in lower density.
What is the effect of trapped air bubbles in water on the determination of density by water displacement?
When you inject air bubbles into a fluid such as water,
the mixture or air and water will have a reduced density compared to the density of water
. The buoyancy of an object in a fluid depends on the density of the fluid. If the object has a lower density than the fluid, it will float; if less, it will sink.
How would the density of an object be affected if there were air bubbles trapped on the object?
Air bubbles trapped in the solid take up space,
lowering the density of the solid and inflating the volume measurement
slightly.
Do air bubbles increase volume?
As depth increases
, pressure increases. Thus, when a bubble rises from below the surface it encounters less pressure. This causes the volume to increase and the bubble rises in size as it rises from a depth.
Why does the graduated cylinder remain full of water after inverting?
Why does the graduated cylinder remain full of water after inverting? It remains full of water
due to atmospheric pressure
. … It must be less than 0.09 g because if it weighed more the metal would produce more than 100 ml of gas, which exceeds the capacity of the graduated cylinder.
Why is it important to make certain that no air bubbles?
Why is it important to make certain that no air bubbles adhere to objects during the submerged weighing procedures? … In simple understand, heavy objects sink while lighter object floats in the fluid. Density, volume of fluid displaced is the key parameters to understand the forces on the object in a fluid.
When calibrating the flask Why is it important to make sure there are no air bubbles trapped in the flask?
When you measure the mass of the liquid you measure it
without the trapped bubbles and hence the mass measurement should be correct. With the bubbles in the pipet however the volume measurement is incorrect, it is too large.
Is aerated water less buoyant?
The aeration tanks are different. Because
a person is less buoyant in aerated water
, it is much more difficult to tread water. rings close by in case danger strikes and a crew member falls in. And remember, this is wastewater we’re talking about.
How does air affect buoyancy?
When part of the object is in the air above the fluid, then there is a “buoyancy”
due to the air density
. As the air becomes more dense, the effect is to provide additional buoyancy. In the limit where the air is as dense as the liquid, the object (if it floats in liquid) would keep rising to “find the surface”.
Will your densities be affected if air bubbles got trapped between the metal shots or the pennies samples explain?
If air bubbles got trapped between pennies or metal shots, then the volume would appear to be larger. Again,
density is inversely proportional to volume
, so the apparent density would be lower than the actual density.
What is the purpose of specific gravity?
The term “Specific Gravity” (SG) is used
to define the weight or density of a liquid as compared to the density of an equal volume of water at a specified temperature
. The temperature used for measurement is usually 39.2
o
F (4
o
C), because this temperature allows water to assume its maximum density.
How would the calculated density be affected if the solid is not completely covered by the water in the graduated cylinder?
How will this effect the reported density of the water? If a solid is not completely submerged,
it will make the reported density higher
. This is because the volume of liquid displaced will be minimalized, and thus we will be dividing the mass by a reported smaller volume.
Why do air bubbles expand as they rise?
Bubbles are comprised of gases, which have a lesser density than water. Since they are less dense, they get pushed up to the surface, and they rise,
lighter than the liquid around them
. This is just like helium in air; helium is lighter than air, so it rises, pushed to the top by the pressure around it.
What is the purpose of bubbling air through the liquid?
On the way to leave the liquid, free gas molecules join into bubbles, and the floating-up of gas bubbles
accelerates establishment of thermodynamic equilibrium
. The floating-up takes place to the interface, if a liquid borders with a free gas, or to walls of a tube, if the liquid flows inside this tube.
How does entrapped air affect specific gravity?
Density or specific gravity (SG) is affected by
entrapped air bubbles in the liquid under test
. … Under pressure the air will dissolve better into the liquid and any bubbles that are left undissolved will be compressed to a fraction of their original size.
