Online Submission Assignment Cover Page
Name: Veronica Malong
ID#: 0896981 Date: Sunday, March 22, 2015
Course #: FOOD 2010
Course Name: Principles of Food Science
Instructor: Massimo Marcone Assignment #: 2
Assignment Name: Assignment 2
# of Pages (including this one): 8
(For instructor’s use)
Grade:
2. Draw a flow diagram of the unit operations involved in sugar refining and at each step write a brief sentence explaining what is occurring. Use the information from SKIL site to develop your flow chart. Since the information does not start from the beginning of the refining process, please include an extraction step (extraction is explained in your textbook). Either milling or diffusion is
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The steam enters the heat exchanger as 50% quality steam and exits as water condensate at 85°C. Calculate the mass of steam required to heat 150 kg of cider. (For the cider, assume the Cp=3.651 kJ/kg°C, and latent heat=280.18 kJ/kg.)
Cider: T1 = 4 C T2= 65C Cp= 3.651 kJ/kg C Mass = 150 kg
Water: T1 = 100 C T2 = 85C Latent Heat = 2257.06
Quality=MCpT
Quality of Cider:
=(150 kg)(3.651 kJ/kgC)(65-4C)
=33406.65 kJ
Quality of Water:
=(4.18 )(100-85C
=62.7 KJ/Kg of water
Quality of 50% Steam:
= (0.5)(2257.06 kJ) + 62.7
=1128.53+62.7
=1191.23 KJ
mass of steam = 33406.65/1191.23=28.04382865
Thus the mass of steam needed would be 28.044 kg
5.
a) Graph the following data on semi-log OR regular graph paper. Determine the D-value using the graph. Show your work.
D = (t₂ - t₁)/(log a – log b)
=(250-100)/[log(270000)-log(30)]
=150/3.9542
=37.9 min.
b) How long would it take to obtain a 3-D reduction in microbial load?
3-D reduction in microbial load = 3 x (37.934) = 113.80 min.
Therefore 113.80 minutes are required to obtain a 3-D reduction in microbial load.
6.
a) Graph the following data on regular OR semi-log graph paper (graph both thermal death time curves on the same sheet of paper). Use the graph to determine the z-value for each organism. Show your work.
Z = T2-T1/log a – log b
A:
Za=150-110/[log(700)-log(0.04)]
=40/4.243
=9.43 F
B:
Zb = 180-100/[log(500)-log(4.5)]
=80/2.0458
=39.11
2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?
1. Use the graph below to predict what the results will look like if the null hypothesis is
1. Describe two examples of important things that financial planning skills can help you do, and explain why these things are important to you personally. (4-6 sentences. 2.0 points)
4. Calculate the following measures of central tendency for the set of cube measurement data. Show your work or explain your procedure for each.
11. Make up a scatter diagram with 10 dots for each of the following situations:
1. Explain how observed teleconnection patterns can help in the preparation of a seasonal weather forecast.
Knowing this information, you need to first tell me, and then show this in your graph:
Read the following short essay, and then write a 3-5 page response (12-point font, double-spaced, normal margins, no cover page, no binders). Your response should do the following three things: (1) state what the main conclusion of the essay is; (2) state what the most important premises (including sub-conclusions) are—i.e., state which premises are most important if the argument is to rationally convince its audience; (3) evaluate the quality of the argument, giving detailed reasons to justify your evaluation. For purposes of evaluation, assume that the speaker is a contemporary Canadian philosopher and the audience is a group of students in Introduction to Philosophy.
Record all my result in a suitable table stating their initial mass, final mass, mass change and percentage mass change.
10. If the temperature is 550, approximately how many grams of NaNO3 can be dissolved in 100 grams of H2O? 6-8.7
Table 1 displays the molar mass of Acetone. There were 3 trials done. Each trial was done under the same conditions. The mass of the flask, foil, and rubber band was calculated in grams before 1-3 grams of Acetone was added. The LabQuest pressure sensor was used to measure the barometric pressure in torrs. The temperature of the water in °C was taken via the LabQuest temperature probe. After the Acetone was heated in the boiling water for approximately 7 minutes, the residual test fluid mass in ml was calculated by weighing the flask, foil, and rubber band and taking that mass minus the mass calculated in row 1. The molar mass was calculated using Equation 1. In Equation 1 m is the residual test fluid in grams, R is a constant of 62.36367
Plot 3 is located on the slope and had the greatest mean height with 28.22m. This was 13% and 20% taller than the next tallest plot and the stand mean height respectively. The plots heights have a range of 19.75 to 31.77 (12.02) and this is the largest range out of all the plots.
period of 70 years. In each of the graphs constructed, there is a slight positive correlation between the
I have chosen these graphs because it makes the data easier to read and easier to compare to one another
1. Read module 16 which deals with writing formal reports. This provides you with a general