Then, we utilized the Vernier caliper to measure the diameter and length of a provided cylinder three times. Lastly, we used the micrometer calipers to measure a provided block. We also recorded the zero reading of the micrometer three times prior to measuring the sides of the rectangular. Four readings of each side were taken, the largest, intermediate, and narrowest sides. The method used to convert the measurement in inches to a decimal was to take the recording of the number plus the fraction out of 8 and add it to the nearest tenth of the smallest division.
Determination of the pKa of Methyl Red by UV-Vis Spectroscopy February 16, 2010 (Partner:) ABSTRACT The purpose of this experiment was to obtain the pKa for an acid-base indicator. A spectrometer was used to determine the pKa of methyl red. The calibration curves were created by analyzing samples of known concentration at pH’s well above and below the pH indicator range for methyl red. Then samples of known pH were analyzed. By, solving the system of equations using linear algebra, the concentrations of the indicator and the conjugate base were determined.
Abstract In this experiment we were handed 3 different tools: vernier caliper, micrometer and vernier height gauge, and asked to find precise measurements of different objects. Some of the objects where a screw, a solid sphere of steel, and a hollow sphere of steel. Then after we had all of our measurements we supplied drawings of each item we measured. Procedure 1. Perform the measurement on a set of parts using different instruments; 2.
Using the values for lens a and lens b, we filled in the columns for image distance in the two tables. We then recorded in table 1 for lens a the object and focused image sizes and the focused image distance from the lens for the given set of object distances from the lens. We then noted the orientation of the image as negative. We completed the data tables for lens a and b by calculating the focal length using equation 1 and the distance ratios and the size ratios, which are equal to the magnification. After this calculation, we have used two methods to determine the focal length of the lenses and calculated and reported a mean and standard deviation for the focal length and magnification.
Show your working. 3 t + 4 = t + 13 t= 2 marks 2 (3n + 7) = 8 n= 1 mark KS3/03/Ma/Tier 6–8/P1 3 Shapes 2. The drawing shows how shapes A and B fit together to make a right-angled triangle. Work out the size of each of the angles in shape B. Write them in the correct place in shape B below.
Write a paragraph describing the relationship between triangles and circles. Be sure to include a description of the different centers a triangle can have. Answer: Circles can be found in triangles. They can be found inside outside triangles too. The circles located on the inside are called inscribed circles, inscribed circles should touch each side of the triangle at a single point.
Week 5 Law of Sines and Cosines 1. Law of Sines: An equation to the length of all sides on a triangle and to the sines of its angles. 2. Law of Cosines: Related to the lengths of the sides of a plane triangle to the cosine of one of the angles. 3.
A.A.44: Using Trigonometry to Find a Side: Find the measure of a side of a right triangle, given an acute angle and the length of another side 1 In the accompanying diagram of right triangle ABC, [pic] and [pic]. [pic] Which single function could be used to find AB? |1) |[pic] | |2) |[pic] | |3) |[pic] | |4) |[pic] | 2 In right triangle ABC, [pic]. Which equation is true for this triangle? [pic] |1) |[pic] | |2) |[pic] | |3) |[pic] | |4) |[pic] | 3 The accompanying diagram shows a ramp 30 feet long leaning against a wall at a construction site.
This occurs at the point when the log ([HPO₄²⁻] / [H₂PO₄⁻] = 0. Using the interpolation calculator the value of pKa = 6.87. Now to determine the pKa of the dye Blue (1). This was done by constructing a plot of absorbance vs. pH of the buffers. This “S” curve plot can be seen below in Figure 2.
TOPIC SPECTROPHOTOMETRIC DETERMINATION OF CYTOCHROME C ABSTRACT We devised and carried out an experiment to determine the cytochrome c concentration of a sample solution. A graph of variation in absorbance with wavelength of another solution of fixed concentration was used to determine the wavelength of maximum absorbance (□max). Another graph of the variation in absorbance at □max with concentration was used to quantify for the cytochrome c in the solution ‘X’. The slope of the second graph was then determined. A value of A(1% 1cm) was obtained.