Battery Lab

Why are spindle fibers important for mitosis? (5 points) Chromosomes use spindle fibers as pathways to daughter cells during mitosis.

The range of normal resting systolic BP for the subjects in this experiment is 115-125 mmHg. Did systolic BP increase, decrease, or not change with exercise?

2. Bring the Styrofoam cup close to another person's hair. What do you observe? What conclusions can you make regarding charged Styrofoam?

The goal of this experiment was to determine the empirical formula for a hydrate of magnesium sulfate and water. The technique that was used was measure the mass of the hydrate and then apply heat to evaporate the water. Then determine the mass of water that was in the hydrate and the mass of the remaining magnesium sulfate. The equation for the hydrate is determined by calculating the mole to mole ratio of the water and the anhydrous. The resulting formula will be formated as: MgSO4*_H2O

1. Using the information provided in the Introduction and your observations from Part 1, hypothesize as to the type of electrolyte the following solutions would be. Justify the hypothesis from a chemical standpoint.

The instructions I was given directed us to perform perform a lab where I performed a reaction the reaction between an active metal and an acid. The purpose of this lab was so we could observe said reaction and hopefully gain a better understanding of what we are currently leaning in class. I hypothesis, if we add dilute hydrochloric acid with magnesium, then there will be a reaction that produces heat because of the rapid exchange of electrons between the two. The materials used within the lab are, an apron, goggles, a clamp and stand, a thermometer, a pipette, hydrochloric acid, and magnesium.

Foor this you simply have to take a look at the processed data table and graph. There is a clear specific trend, visibly recognizable as well as mathematically (a trend line indicates it), that is, as the molar concentration (solute) of salt increased in the solution where potatoes were placed, the mass of potatoes decreased. Now, from the molar concentrations of salt solute that we tested (0.0M, 0.2M, 0.4M, 0.6M, 0.8M, 1.0M) we cannot decipher with certainty and accuracy what is the molar concentration of potato cells. However, we can estimate, and judging by the a decrease in percent mass from 21.10% grams (0.0M) to 12.13% (0.2M) and followed by a constant decrease in percent change in mass, it can be said that the salt concentration of a potato cell is between 0.0M and 0.2M. This is because these molar concentrations are the one that show the decrease in mass of the potato. When there’s a decrease in mass, this practically means that the water inside the cells is leaving because of diffusion to areas of lower concentration.

In this lab, the alkalinity, or buffering capacity, of three samples of water was tested. Indicator dye was added to the samples and acid of known normality was added until the alkaline components were depleted at near pH 4.2. The Na2CO3 solution sample was found to have an alkalinity equivalent of 270 mg-CaCO3. The NaOH solution was found to have an alkalinity equivalent of 205 mg-CaCO3. The tap water solution was found to possess an alkalinity equivalent of 310 mg-CaCO3.

I was just informed that you did not pass the Work Sample Test Battery (WSTB) on 04/08, which includes the following tests:

Higher temperatures are also a concern because of their effect on water chemistry. Water chemistry is the rate of chemical reactions increasing during higher temperature, which in turn

The purpose of this lab is to find the densities of three common rocks found in the Earth’s crust, basalt, sandstone, and granite using the provided materials. The prediction was that granite would appear to be the most dense, followed by sandstone, and basalt would be the least dense. The mass (g) and volume (cm³) would be needed to find the density of each of the three rocks. The method, water displacement, would need to be used to find the volume of the three rocks. In this lab, a graduated cylinder would need to be filled with 130 mL of water, and then the three rock samples would need to be added. Subtracting 130 mL to the total volume of the water would give the volume of the rock, in cm³. Each of the three rocks would also need to be measured for its mass in grams using a scale. To

With regard to buying a battery for UPS one should consider different things, such as the reliability of the same and also the battery life. There are many common batteries available that are made from low quality products and materials. The batteries are really meant for different purposes, like vehicles, house and also the inverter. When it comes to UPS; These batteries work very well and these batteries can also increase the life of UPS, but only good quality batteries can do so.

When Nitric Acid is poured upon Copper, which is contained in pennies, a very interesting reaction occurs. This reaction produces a red-brown nitrogen dioxide gas in addition to a hot, blue solution of Copper (II) nitrate. During the reaction, it is easy to observe the red-brown gas fill the flask with a distinct blue liquid covering the bottom. This reaction can be classified as a single replacement reaction. This is because the Copper ions and Hydrogen ions “switch places”. This is seen in the products of the reaction with Copper (II) nitrate and water. As mentioned previously, the reaction produces heat. This means that the reaction is exothermic. As a result of the increase in heat, the gas inside the flask where the reaction occurred expands,

If the results of these tests show that there is no change is mouse behavior or tissue degeneration of the brain, then Huntington’s disease did not affect the mice. This might be caused by a loss of cell-tissue or failed gene introduction within the brain of the mice, which has been observed while using electroporation. This problem occurs due to the amount of voltage added to the injection site, which varies depending on the experiment. For this experiment, a low voltage is used, which can ensure the health of the mouse, but not always full introduction of the new gene. Higher voltages can be used to ensure the full introduction of the new gene, but they also cause more cell death within the mice, (De Vry).

Quality of the test material in SB5 are innovative, functional, and all the material successful provides a basis for the five factors of cognitive ability. Anagloies, manipulation of toys, reasoning with pictures, and memory test of the last word in a sentence are the various things that will be presented in a SB5 kit ( Rod, 2003). These various types of test material will help an examiner see where the examinee is having problems. In order to replace the SB5, it depends if a person needs a whole kit with scoring additives or individual components such as Item Books or manipulatives kit. The cost to replace the SB5 complete kit will cost close to 2,000 dollars, and scoring additives will increase the price by a hundred. (Riverside, 2013).