The following materials were used in order to conduct the experiments about metric measurements. The materials needed to conduct all of the experiments was a dropper bottle, a graduated cylinder, two long bones, a magnet, a meter stick, a resin block, a test tube, a thermometer, a triple beam balance, and water. The first procedure was based on the metric units of measurement for length. The experiment required measuring bones. First, a meter stick and long bone from a human skeleton were obtained. The bone was then measured with the meter stick in centimeters and millimeters. Another bone was obtained and measured on the meter stick as well. Lastly, both long bones and meter stick were put away.
The second procedure was based on the metric units of measurement for weight. For the next procedure, a balance scale and resin
…show more content…
The materials were used for the procedure based on the metric units of measurement for volume. The 50 mL graduated cylinder was filled with water to the 20 mL mark. To obtain the precise measurement of water a dropper bottle was used. The water was measured correctly by identifying the meniscus of the water when it reached the 20 mL mark. The 20 mL of water was then poured into the test tube. The 50 mL graduated cylinder was again filled with water to the 20 mL mark. The magnet that was measured in the earlier procedure was then placed inside the graduated cylinder. The volume of the object was calculated by taking how much the substance rose when put into the water and subtracting it by the 20 mL mark. The graduated cylinder was then emptied. The new objective was to find out how many drops using a pipet it would take to make it to the 1 mL mark in a 50 mL graduated cylinder. The drops of water were counted until the water reached the 1 mL mark. The graduated cylinder was emptied and the other materials were cleaned and put
The only materials needed in the experiment were a single dial caliper, and the skin of the participant that was measured (Lab Manual). A dial caliper was available for purchase online through the use of a simple Google search. The dial caliper was a long metal object with one dial, that was adjustable and that moved the two sharp points at the end of the caliper further away from each other. The purpose of the dial caliper was to measure the length of space between the two sharper points of the dial caliper.
3) You will then measure the mass of one c-clamp. Record this as m1 accepted.
The buret nozzle was closed and the final amount of acid in the buret was recorded. The stir bar was taken out of the flask using a bar magnet.
The mixture was poured through a weight filter paper and Sucrose washed with a 5ml of dichloromethane. The resulting solid was left in a breaker to dry for one week, to be measured. Left it in the drawer to dry out for a week and weighted it to find the sucrose amount recovered amount.
Start with the hot water and first measure the temperature. Record it. 8. Then pour 40 ml into the beaker. You can measure how much water was used by looking at the meniscus.
Summary and procedures: the use of the different types of apparatus to get the correct results is always knowing it functionality and the correct significant digits. We always must make sure the balance should be 0.000 g when it is completely empty. In the case of the electric balance, the tray must to be clean and free of water or dirt, this machine is very accurate and precise. In the use of the flask and beaker, those should be cleaned before and after the use, that is how we avoid and create accidents for unknow chemicals or substances that were used before in the containers. Starting with the procedure, first is determine the mass for each balance in use, then record all the necessary data of that.
IOS 5725 “Accuracy (trueness and precision) of measurement methods and results” Part 2 to 5: 1994
Each tablet was placed on pre-weighed container, and then they were weighted by using the digital balanceafter making sure that any extra drops of water was uninvolved and the container was completely dry and clean. This step was repeated for each tablet to determine the exact swelling percentage through the following formula
Discuss the unit of distance of the soda bottle that was used in this experiment. The unit of distance could be measured using the metric system, which would be centimeters, or meters or it might have been measured in inches or feet. My question is which unit of measurement did my lab partners use to measure the soda bottle.
A medication error occurred in 1999, where a patient received 0.5 grams of a sedative instead of 0.5 grains. A grain is equivalent to 0.065 grams. The prescriber misread the label. The institute for Safe Medication Practices emphasized that only the metric system should be used for prescribing medications.
In order in determine the equivalent weight of the unknown acid, a base was needed at a known or "stan...
The reason why this specific amount was chosen is because it was an easy amount to measure and does not take a lot of space when it is poured into the graduated cylinder. Using five grams was too low of an amount to measure and twenty grams seemed too much. Also, using ten grams for each metal made the procedure quick and simple to complete. The volume was picked out to 50 mL because this amount of volume was much easier to measure than a really low volume like 10 mL. Since the graduated cylinder is numbered by a factor of 10 mL, it was easier to read a 50 mL as opposed to a 73 mL. The calculated density for the unknown metal A seemed to be aluminium since it was approximately close to the constant density of aluminium. The density that was calculated during this experiment for unknown metal A was 2.248 g/mL and the constant density for aluminium is 2.7 g/mL. However, the calculated density for unknown metal B was a little off for it to be a density of tin. The result of the average density for unknown metal B is 5.11 g/mL and the constant density for tin is 7.31
What would happen if the whole world used the same system of measurement? Today, the current situation on whether or not the United States should convert to the metric system (SI) is highly debated. The United States should convert to the SI system because it is much more beneficial than the Imperial system.
The main reason the metric system is known for its simplicity is because there is only unit of measurement or a base unit for each type of measured quantity measured; length mass, weight, etc… There are a few base units in the metric system but the most common ones which are used are the meter, gram and liter. As an example if ...
This is a technique that is used when separating mixtures. A substance is put into a mediu...