Shell Mass And Acid Concentration Lab

After gently blotting, weigh all three eggs separately inside their own individual weigh boats to the nearest 0.1g and record the weights in Table 1 at time 0. Place eggs 1, 2, 3 into separate culture dishes containing solutions of distilled water (0% sucrose), 14% sucrose, and 40% sucrose respectively. The sucrose must cover the entire egg inside the culture dish before proceeding to the next step. Place a napkin down on the lab counter, at 15-minute intervals, remove the eggs from the dishes with large spoon; place on napkin and wipe off all excess water each weigh boat must be clean as well before weighing; and again, weigh each egg separately. Record the weight in Table 1: Weight of Eggs vs. Time (minutes). Replace the egg in the dish for the next interval. After the experiment is complete, return the eggs to their container and each solution to its labeled container. Clean the dishes and weigh boats and return all materials to the setup

First students obtained 8 graduated cylinders and labeled them. Each one contained a different ratio of vinegar and water. These graduated cylinders with the liquid were weighed and recorded.Then, students obtained an Alka-Seltzer tablet and recorded its mass. Then one alka-seltzer tablet was dropped into each of the graduated cylinders. Students had to

After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. What hypothesis can you generate about the effect of adding salt to water?

For this experiment, there is several materials needed to have a successful lab experiment. This includes the basic utensils such as the datasheets, pencil, and a notepad to add additional notes. Following the list of materials, you will need three bottles to collect sampling water

The purpose of this virtual lab is to observe the acid-base balance in the urinary system by how PCO2 and blood pH affect the H+ and HCO3- in the urine. The renal compensation is a mechanism that shows the kidneys manage to change pH in correct way if the respiratory system is not healthy. The kidneys are two organs that help remove wastes and extra fluids out of the body. The acid-base balance is when the blood need to keep the balance of

Rinse the beakers and fill both with 125 ml of water each. Place one egg in a beaker and place the other egg in the other beaker. Record the density by subtracting the current reading of water in the cup by the original amount of water in the beaker.Leave both eggs in their beakers alone for 48 hours. After the 48 hours, take both eggs out of their beakers. Clean both beakers for reuse. Fill one beaker with 125 ml of corn syrup. Fill the other beaker with 125 ml of water. Lave bother eggs in their beakers alone for another 48 hours. After the 48 hours, take both eggs out of their beakers. It is time to take measurements and collect data. Take a ruler and measure the height of both eggs. The take a bit of yarn (enough to wrap around the eggs) and wrap the yarn around both eggs separately to get their individual circumferences. Then place both eggs on the grams scale individually to get their weights. Observe their color and shape to get some qualitative data. Rinse the beakers and fill both with 125 ml of water each. Place one egg in a beaker and place the other egg in the other beaker. Record the density by subtracting the current reading of water in the cup by the original amount of water in the beaker. Clean up and the experiment is

3: Using a graduated cylinder, measure 50 ML of vinegar. Pour the vinegar into a second plastic cup.

The experiment began with us weighing the original mass of the egg, this information would be used later to compare to the affected mass. We then soaked the egg in a small cup of vinegar and let it sit for 24 hours. When we observed the egg the following day we removed the egg

The first step you have to do is to have small bowl when you have your small bowl you will need to have the following solutions vinegar and the salt and when you have both you will need pour both solutions into the bowl and stir them well. The second step You will need pennies and nickels and detergent or any dish soap and you will need to soak the pennies with the dish soap and let them dry. The fourth step you will need to cut out aluminum foil around 2cm-8cm. The fifth step you will need scissors to cut out small squares of paper towels. After that is done you will need plate to set up everthing.. Like you will put the aluminum foil on the plate after that is done you will need to built your stack of pennies and when that is finish you need a multimeter and you ready to see how much energy the pennies produce. Lastly you will analyze your

The acidification that is happening within the ocean is affecting numerous animals and plants that have calcium carbonate skeletons and shells. IUCN states “These become very sensitive when the acidic level changes even the slightest bit and there is even evidence that some species are already being affected and we can see that the loss is already starting”.

The first organisms that ocean acidification affects are calcifying creatures. These include creatures like oysters, calcareous plankton, clams, sea urchins, and coral. The ocean normally has enough carbonate ions dissolved for calcifying creatures to use to create their shells. Ocean acidification negatively affects the ability for these organisms to build their shells. As carbon dioxide dissolves into the ocean it reacts with the water to form carbonic acid (What is Ocean, 2015). Also, as more carbon dioxide dissolves into the ocean, it reacts with seawater to make H+ ions. These H+ ions compete with calcifying creatures for the carbonate ions. The H+ ions often win making it much more difficult for these shelled creatures to make their shells (Cripps et al., 2014). Creatures like conch shells, oysters, and clams are the most negatively affected. But not all creatures are immediately affected. Some organisms such as crabs and lobsters and crabs actually grow heavier shells to combat the effects of changing pH. This adaptation

“Shellfish growers who live on the West Coast of the U.S. are taking steps to adapt to ocean acidification” (What Can We Do 1). By monitoring the seawater chemistry and adopting new practices, shellfish growers are making the most out of this situation that can be easily resolved.

The eggs were each individually placed in one of the beakers and were taken out and weighed every 15 minutes for 60 minutes. Weighing the eggs helped to test the process of osmosis by finding out the mass before and after soaking in water, this will dictate whether water has moved in or out of the egg.

The overall effect of ocean acidification on mollusks leads scientists to believe their population is in jeopardy of decreasing. Scientists found that mollusks are capable of adapting to the ocean acidification by reducing their size to accommodate for the lack of available calcium for shell formation (1). But much like the other issues faced by mollusks, such as thinning shells and defensive behaviors leading to less feeding time, their adaptation of decreasing their size also leads to their death as they are more vulnerable to predation (1). Mollusks are an important food source for many higher organisms, if the mollusk population decreases the populations of the predators who rely on them as a food source will also see a decline. While a decline in the mollusk population may not seem like a particularly impactful result of the ocean acidification, in the larger picture of the food chain these affects could be quite

They all must be the same size, same type, and the same mass. Then collect 2-3 7oz cups depending on how many shells were collected. Also for this experiment vinegar is needed. Fill each 7oz cup with water and for each cup put a different concentration of acid using teaspoons and make sure to label each cup and how many teaspoons of acid is within them. For example, In cup one there is quarter teaspoon of acid. In cup number two there is half a teaspoon of acid, and in cup number three there is one full teaspoon of acid in the cup. Now before dropping the shells within the 7oz cups like most are tempted to. Go weigh the shells to see if they are or are so close to being the same exact mass. If they are not are or almost the same mass the experiment will fail. Once the weighing of the shells are done then drop one shell into each one of the cups with different concentrations of acid. Cover each cup up with saran wrap and wait at least a week. After a week or so take out the shells in the labeled cups one at a time and weigh them again so see how much the mass change from before it was dropped into the acidic