Essay about Engineering Lab Report Sample, Master's Student

PURPOSE:  to determine which of the 3 ionic compounds (NaCl, LiCl, or NaCH3COO) is most

Two major laboratories have given two stones that differ markedly in overall quality the same grade. Explain

11. Perform the Mohs hardness test on all of the samples in your set; determine which is the hardest and softest.

When the pH is not at its optimum, the differing pH's will disrupt the bonding between the R groups of the amino acid causing its structure and the shape of the activation site to change

A1.Work under the hood! With a pair of tongs, hold a strip of magnesium in a bunsen burner flame. Do not look directly at the flame. Save the ash in a small beaker for the next procedure. If magnesium is substance "A" in the general equation, what is "B"?

Analyze results – Assume that your experiment produces results identical to those seen in Table 4, what type of graph would be appropriate for displaying the data and why?

Table 1 Concentration of protein, DNA, and ratio of the two in heart, kidney and liver of bos taurus. Average standard deviation of protein concentration is also shown.

Step 1: Label the test tubes 1, 2, 3 and 4, where test tube 1 represents the sample placed on the counter at room temperature, test tube 2 represents the tube placed in the refrigerator, test tube 3 represents the tube placed in the freezer, and test tube 4 represents the sample exposed to boiling water. You will expose catalase to each of these four conditions.

The number of electrons forming a charge cloud around the nucleus is (pick one of the following) greater than; equal to; smaller than the number of protons in the nucleus of the atom.

The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react

1. Make a wet mount (Ex 12) of a small sample of the alfalfa water. Examine at 1000X total magnification using high contrast. This will illustrate how many organisms, both motile and non-motile, are present in the sample.

groups. It was conducted to further the research in choice overload and paralysis of the mind.

14) Which one of the following minerals has the greatest hardness on the Mohs hardness scale? A) Feldspar B) calcite C) gypsum D) topaz 15) Which of the following best defines a mineral and a rock? A) A rock has an orderly, repetitive, geometric, internal arrangement of minerals; a mineral is a lithified or consolidated aggregate of rocks. B) A mineral consists of its constituent atoms arranged in a geometrically repetitive structure; in a rock, the atoms are randomly bonded without any geometric pattern. C) In a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of minerals. D) A rock consists of atoms bonded in a regular,

This experiment was performed to observe differences in density based on the chemical makeup of an object. Pennies minted before 1982, pennies minted after 1982, and an unknown metal sample was tested to see if there were any differences in their densities. Ten pennies from each category and the metal sample were weighed using a scale to find mass and the displacement method was used to find their volumes. The masses and volumes were then used to calculate the densities of the pennies (D=m/v). The density of the pre-1982 pennies were 8.6 g/mL while the post-1982 pennies were 6.9 g/mL. The metal sample’s density was 1.7 g/mL. Following the experiment we were given the real densities of each item to calculate the percent error with the formula

Introduction: The purpose of this experiment is to classify the pigments in various plant specimens as one of the four main pigments by recognizing distinct characteristics indicative of each pigment. If the water keeps the color of the specimen, then I will be able to identify which pigment (or perhaps pigments) is present in the specimen. I came to this conclusion based on the logic that some of the four pigments are water-soluble, so if the water has no color, the pigment dissolved and I can eliminate said pigment. I think that my ability to distinguish the three red specimens will depend on the results of the experiment; if the results suggest that all three red specimens have the same pigment it will be difficult to tell which one is