then you would have a problem to find out the right amount of volume of the sample that you dropped in the cylinder.
chem 111
It ensures that all the heat must enter the water, which in turn raises its temperature. if there was not enough water to completely cover the sample, then some of the heat could be lost directly to the air, resulting in a (potentially gross) underestimate of the heating value of the sample.
after 5.63 gm sample of wood metal was added in a 10ml graduated cylinder the new water level is 8.7ml "http://wiki.answers.com/Q/Was_the_water_in_a_cylinder_before_the_sample_was_added" after 5.63 gm sample of wood metal was added in a 10ml graduated cylinder the new water level is 8.7ml "http://wiki.answers.com/Q/Was_the_water_in_a_cylinder_before_the_sample_was_added"
A water sample has a volume of exactly 12.0000mL. This volume would be recorded 12.0mL if it were measured from a 50-mL graduated cylinder.
Oxygen is just O and water is H2O
A sample of water is said to be hard when it does not form lather readily with soap.
It ensures that all the heat must enter the water, which in turn raises its temperature. if there was not enough water to completely cover the sample, then some of the heat could be lost directly to the air, resulting in a (potentially gross) underestimate of the heating value of the sample.
No. Density is an intrinsic property and does not depend on the amount or size of the sample. If you are referring to finding the volume of an irregular solid by water displacement, then you will get a very large experimental error if the solid sticks out of the water. The amount of water added to the graduated cylinder initially, must be enough to completely cover the solid, before you place the solid in the cylinder.
It ensures that all the heat must enter the water, which in turn raises its temperature. if there was not enough water to completely cover the sample, then some of the heat could be lost directly to the air, resulting in a (potentially gross) underestimate of the heating value of the sample.
Use a graduated cylinder and the water displacement method. Pour the sample of water in the graduated cylinder and find its meniscus. That is its volume.
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after 5.63 gm sample of wood metal was added in a 10ml graduated cylinder the new water level is 8.7ml "http://wiki.answers.com/Q/Was_the_water_in_a_cylinder_before_the_sample_was_added" after 5.63 gm sample of wood metal was added in a 10ml graduated cylinder the new water level is 8.7ml "http://wiki.answers.com/Q/Was_the_water_in_a_cylinder_before_the_sample_was_added"
Drop it in water. Fill a graduated cyllinder with water to cover the sample and record the volume. Then gently lower the rock sample into the water and record how much the water rose. The difference is the volume of the rock. Drop it in water. Fill a graduated cyllinder with water to cover the sample and record the volume. Then gently lower the rock sample into the water and record how much the water rose. The difference is the volume of the rock.
To find the volume of an irregular shape, you need to use the water displacement method. If the object can fit into a graduated cylinder, fill the cylinder with enough water to adequately cover the object, but don't put the object inside the cylinder yet. Record the amount of water in the cylinder. Carefully drop the object into the cylinder. This will cause a rise in the water in the cylinder. Record this second volume. Subtract the first volume from the second volume, and the difference is the volume of the irregular object. For larger objects, use an overflow can.
You can not drink enough.
Use the water displacement method. You need a graduated cylinder and some water. Fill the graduated cylinder with enough water so that when you place the rock in the graduated cylinder it will cover the rock. Read the meniscus (the slightly curved line of the water) at eye level. Record your measurement of the water in the graduated cylinder (in mL). Place the rock in the graduated cylinder and record your new measurement of the water line, again at eye level. Subtract the original measurement from the new one to get the volume of the rock.
cover slips are generally used with a microscope slide to press the water of the sample to a more even level so that the lens can focus properly and the sample you are studying doesn't move around as much.
Weigh the key. With water, fill a graduated cylinder to a mark that is deep enough to cover the key. Now place the key in the water, and measure how much the water goes up. That will give you the volume of the key. Density is weight divided by volume.