Homework Answers
Negative staining technique is a method that is used for diagnostic purposes to view the contrasting images of specimen. The staining method is direct and in this case the organism is not stained and kept untouched but the background is stained in order to view a contrasting feature of the organism. This process does not require any heat fixing because the staining is directly applied along with the organism. Negative stains can be sometimes heavy chemicals like osmium tetraoxide for the Electron microscopy so they sometimes can be strong chemicals. But because there is no multiplication of the organisms during the stain because that is not possible.
The correct answer is : no heat fix ; no multiplication
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Question 7 The two conditions for negative stain are NO STRONG CHEMICAL: NO NUTRITION ONO HEAT...
the symbol delta H stands for Question 7 The symbol AH stands for the specific heat...
the symbol delta H stands for
Question 7 The symbol AH stands for the specific heat of a substance standard heat of formation for a compound O heat capacity of a substance heat of reaction for a chemical reaction
QUESTION 7 Which of these is a weak negative correlation? r = .9 r = .91...
QUESTION 7 Which of these is a weak negative correlation? r = .9 r = .91 r = -.12 4 = .43 10 points QUESTION 8 Which of these is a strong positive correlation? r = .86 r = -.93 r = .27 r = .03 10 points QUESTION 9 Which of these is a perfect positive correlation? r = 1.0 r = -1.0 r = 0 r = 100
QUESTION 2 2. A shell and tube heat exchanger with two shell passes and four tube...
QUESTION 2 2. A shell and tube heat exchanger with two shell passes and four tube passes cools a chemical with a specific heat of 2385 J/kg K at a rate of 1.25 kg/s from 140°C to 80°C, using water at 35°C. The outlet temperature of the water is 85°C. Determine the area of heat exchanger if U= 800 W/m2-K. If the unit is operated with flow rates doubled, determine the heat transfer. Also determine the heat transfer if the...
Question 7 2 pts Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond...
Question 7 2 pts Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity. HH H-N- -0- Chemical bond Bond type N-H [Select N-C [ Select] C-H [ Select) C-o (Select) O-H ✓ Select) Polar covalent bond, and the partial negative charge is on O Polar covalent bond, and the partial negative charge is on H Pure (Nonpolar) covalent bond
Question 7 Independent random samples from two regions in the same area gave the following chemical...
Question 7 Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the popalation distributions of the chemical are mound-shaped and symmetric for these two regions Region 1,71; m1 = 12 981 726 686 496 657 627 815 504 950 605 570 520 Region I: x2 2-16 024 830 526 502 539 373 888 685 868 1093 1132 792 1081 722 1092 844 LotMg-678 be the population mean and ơ1.164 be the population...
Question 7 2 pts Consider the Lewis structure of dichloroacetic acid (CHCI2COOH) below, for each chemical bond in th...
Question 7 2 pts Consider the Lewis structure of dichloroacetic acid (CHCI2COOH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity. :c1: • H-¢--0-H :C: Chemical bond Bond type [Select] O-H C-C1 Select [Select] Polar covalent bond, and the partial negative charge is on Polar covalent bond, and the partial negative charge is on Pure (Nonpolar) covalent bond C-H Pure (Nonpolar) covalent bon c-o
Question 7 2 pts Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond in the table, d...
Question 7 2 pts Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity. HH H- N- C- 0- H Chemical bond Bond type N-H (Select) [ Select] N-C C-H Polar covalent bond, and the partial negative charge is on H Pure (Nonpolar) covalent bond Polar covalent bond, and the partial negative charge is on N [Select] 0-H [Select]
QUESTION 10 A lizard population has two alleles conferring different tolerance to heat stress. In stressful...
QUESTION 10 A lizard population has two alleles conferring different tolerance to heat stress. In stressful heat conditions, the following genotypes give on average the following number of offspring per reproductive season: Att/Atn = 10; Att/Att=20; Atn/Atn = 3. If this lizard population has an initial frequency for the allele Att of 0.3, what will the frequency of Att be in the next generation under stressful heat conditions? 0.52 0.48 0 037 0.24
7. I want to bond two alumina plates together. I put a thin layer of SiO, glass in between then heat to high T. Eventually mulie (ALO2Sio,) forms. (a) What are the boundary conditions, and which...
7. I want to bond two alumina plates together. I put a thin layer of SiO, glass in between then heat to high T. Eventually mulie (ALO2Sio,) forms. (a) What are the boundary conditions, and which case is this representative of, and which equation would you use? (b) What else would you like to know? (c) How would you predict if mullite will form, how would you use thermodynamics?
7. I want to bond two alumina plates together. I put...
Question 20. Below are two IR spectra for two chemical compound. One of them is an alcohol and on...
help please
Question 20. Below are two IR spectra for two chemical compound. One of them is an alcohol and one is an aldehyde. Please assign a correct type of compound for each spectra 60 40 20 4000 3500 3000 2500 20005001000500 Answer A: Part-2 (Mass Spectroscopy Total Points: Total pts Received: 20 Page 4 of 7
Question 20. Below are two IR spectra for two chemical compound. One of them is an alcohol and one is an aldehyde. Please...
the symbol delta H stands for
Question 7 The symbol AH stands for the specific heat of a substance standard heat of formation for a compound O heat capacity of a substance heat of reaction for a chemical reaction
QUESTION 2 2. A shell and tube heat exchanger with two shell passes and four tube passes cools a chemical with a specific heat of 2385 J/kg K at a rate of 1.25 kg/s from 140°C to 80°C, using water at 35°C. The outlet temperature of the water is 85°C. Determine the area of heat exchanger if U= 800 W/m2-K. If the unit is operated with flow rates doubled, determine the heat transfer. Also determine the heat transfer if the...
Question 7 2 pts Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity. HH H-N- -0- Chemical bond Bond type N-H [Select N-C [ Select] C-H [ Select) C-o (Select) O-H ✓ Select) Polar covalent bond, and the partial negative charge is on O Polar covalent bond, and the partial negative charge is on H Pure (Nonpolar) covalent bond
Question 7 Independent random samples from two regions in the same area gave the following chemical measurements (ppm). Assume the popalation distributions of the chemical are mound-shaped and symmetric for these two regions Region 1,71; m1 = 12 981 726 686 496 657 627 815 504 950 605 570 520 Region I: x2 2-16 024 830 526 502 539 373 888 685 868 1093 1132 792 1081 722 1092 844 LotMg-678 be the population mean and ơ1.164 be the population...
Question 7 2 pts Consider the Lewis structure of dichloroacetic acid (CHCI2COOH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity. :c1: • H-¢--0-H :C: Chemical bond Bond type [Select] O-H C-C1 Select [Select] Polar covalent bond, and the partial negative charge is on Polar covalent bond, and the partial negative charge is on Pure (Nonpolar) covalent bond C-H Pure (Nonpolar) covalent bon c-o
Question 7 2 pts Consider the Lewis structure of aminomethanol (NH2CH2OH) below, for each chemical bond in the table, determine the type of the chemical bond and bond polarity. HH H- N- C- 0- H Chemical bond Bond type N-H (Select) [ Select] N-C C-H Polar covalent bond, and the partial negative charge is on H Pure (Nonpolar) covalent bond Polar covalent bond, and the partial negative charge is on N [Select] 0-H [Select]
QUESTION 10 A lizard population has two alleles conferring different tolerance to heat stress. In stressful heat conditions, the following genotypes give on average the following number of offspring per reproductive season: Att/Atn = 10; Att/Att=20; Atn/Atn = 3. If this lizard population has an initial frequency for the allele Att of 0.3, what will the frequency of Att be in the next generation under stressful heat conditions? 0.52 0.48 0 037 0.24
7. I want to bond two alumina plates together. I put a thin layer of SiO, glass in between then heat to high T. Eventually mulie (ALO2Sio,) forms. (a) What are the boundary conditions, and which case is this representative of, and which equation would you use? (b) What else would you like to know? (c) How would you predict if mullite will form, how would you use thermodynamics?
7. I want to bond two alumina plates together. I put...
help please
Question 20. Below are two IR spectra for two chemical compound. One of them is an alcohol and one is an aldehyde. Please assign a correct type of compound for each spectra 60 40 20 4000 3500 3000 2500 20005001000500 Answer A: Part-2 (Mass Spectroscopy Total Points: Total pts Received: 20 Page 4 of 7
Question 20. Below are two IR spectra for two chemical compound. One of them is an alcohol and one is an aldehyde. Please...
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