Chemistry concepts and calculations

1-To make an alpha particle fuse with the nucleus of another atom, you need to a

1-To make an alpha particle fuse with the nucleus of another atom, you need to aim carefully give the alpha particle a negative charge give the alpha particle a large amount of en…

1-What are the basic/general principles of chromatography, and how are stationar

1-What are the basic/general principles of chromatography, and how are stationary and mobile phases involved in the separation of compounds? 2-What are the specifics of TLC as a c…

1-What is the chemical formula for the compound formed between tin(II) and iodin

1-What is the chemical formula for the compound formed between tin(II) and iodine? 2-What is the chemical formula for the compound formed between tin(II) and sulfur? 3-Write the f…

1-What is the chemical formula for the compound formed between tin(II) and iodin

1-What is the chemical formula for the compound formed between tin(II) and iodine? 2-What is the chemical formula for the compound formed between tin(II) and sulfur? 3-Write the f…

1-What is the difference between the internet and the web? 2-What is the functio

1-What is the difference between the internet and the web? 2-What is the function of an ISP? List two types of ISPs. 3-Describe the difference between Blogs and micro blogs? 4-Def…

1-What is the pH of a buffer that consists of 0.341 M HF and 0.439 M KF? K a of

1-What is the pH of a buffer that consists of 0.341 M HF and 0.439 M KF? Ka of HF is 6.8 x 10-4 2-The pH of 0.50 M HClO is 3.91.  Calculate the change in pH when 1.06 g of NaClO i…

1-What is volume in Liter of 10.3 moles of o2 gas at 25 ºC and 2 atm of pressure

1-What is volume in Liter of 10.3 moles of o2 gas at 25 ºC and 2 atm of pressure ? 2- What is the molarity of an 85.0 mL ethanol (C2H5OH) soulation contaning 1.77g of ethanol? 3- …

1-What solvent you use to determine the density of zinc chloride? 2-The density

1-What solvent you use to determine the density of zinc chloride? 2-The density of a solid with a melting point of 42 to 44 C was determined to be 0.87+- 0.02 gmL. what is the sol…

1-What was not used to determine the order of the [Dye] in the rate law? a)The t

1-What was not used to determine the order of the [Dye] in the rate law? a)The table of data that shows the changes of rate as a consequence of the change in the [Dye] for all exp…

1-What would be printed from the following program segment: for (x = 12 ; x = 0

1-What would be printed from the following program segment:     for (x = 12 ; x = 0 ; x = x - 2)           printf ("%d ", x);        a)on the same line: 12 10 8 6 4 2 0 b)       o…

1-Which is not true about saponification? a hydrolysis soaps are products a reac

1-Which is not true about saponification? a hydrolysis soaps are products a reaction of fatty acids a strongly basic solution is required 2-Which is not a lipid? cholesterol testo…

1-Which is/are criteria for hydrogen bonding to occur? Hydrogen must be bonded t

1-Which is/are criteria for hydrogen bonding to occur? Hydrogen must be bonded to a very electronegative atom. Two hydrogen atoms must be bonded together. There must be a lone pai…

1-Which of the following is not considered an air pollutant? water vapor ozone n

1-Which of the following is not considered an air pollutant? water vapor ozone nitric oxide sulfur dioxide 2-Which is not a greenhouse gas? CO2 H2O CO CH4 3-Which molecule will ab…

1-Which of the following processes are spontaneous? (Select all that apply.) ave

1-Which of the following processes are spontaneous? (Select all that apply.) average car prices increasinga satellite falling to Earthwater decomposing to H2 and O2 at 298 K and 1…

1-Which of the following statements about x-ray crystallography are true? (Selec

1-Which of the following statements about x-ray crystallography are true? (Select all statements that are TRUE) a-All atoms scatter x-rays equally. b-The basic experimental data a…

1-Which of the following underlined items is not an intensive property (a) A che

1-Which of the following underlined items is not an intensive property (a) A chemical reaction reqyuires 3.00g of oxygen (b) Solid copper hydroxide is blue colored (c) the density…

1-Which of the following underlined items is not an intensive property (a) A che

1-Which of the following underlined items is not an intensive property (a) A chemical reaction reqyuires 3.00g of oxygen (b) Solid copper hydroxide is blue colored (c) the density…

1-Why are scientists worried about the ozone hole? increase in skin cancer incre

1-Why are scientists worried about the ozone hole? increase in skin cancer increase in plant growth decrease in ocean temperature all of the above 2-Which type of radiation is eff…

1-Why are wireless technologies more expensive to implement for WAN technology t

1-Why are wireless technologies more expensive to implement for WAN technology than physical connections? Do you think that wireless WANs will eventually replace wired? 2-Security…

1-Why, in the standardization of H 2 SO 4 with Na 2 CO 3 solution, is titration

1-Why, in the standardization of H2SO4 with Na2CO3 solution, is titration carried out to pH 4.3 (methyl orange endpoint) rather than to pH 8.3 (phenolphthalein endpoint)? 2-For ea…

1-Write a program that will search a file of numbers of type int and write the l

1-Write a program that will search a file of numbers of type int and write the largest and the smallest numbers to screen.The file to the screen.The file contains nothing but numb…

1-Write the oxidation half­reaction and the reduction half­reaction for each of

1-Write the oxidation half­reaction and the reduction half­reaction for each of the reactions listed.? 2-Calculate the standard potential of each reaction listed.? 1. Mg(s) + ZnSO…

1-Write the rate law expression for the reaction A + B C, based on the following

1-Write the rate law expression for the reaction A + B C, based on the following data: [A] M [B] M Rate M/s 5 5 5 5 10 20 10 10 20 a.If the Rate units are M/sec, what is the unit …

1-a coffee-maker contains a heating element that has a resistance of 53 . This h

1-a coffee-maker contains a heating element that has a resistance of 53 . This heating element is energized by a 120-V outlet. What is the current in the heating element? 2-The he…

1-butanol + hydrobromic acid -----------> 1-bromobutane + H2O 1-butanol hydrobro

1-butanol + hydrobromic acid -----------> 1-bromobutane + H2O 1-butanol                        hydrobromic acid                          1-bromobutane + H2O Bp-118 C           …

1-butanol benzil 2-methoxyethanol 2-methyl-3-butyn-2-ol quinoline salicylaldehyd

1-butanol benzil 2-methoxyethanol 2-methyl-3-butyn-2-ol quinoline salicylaldehyde lauric acid benzoic acid 2-butanol 2-methyl-2-butene 2-naphthol oxalic acid benzyl alcohol methan…

1-declare an object pointer for the Student class ? 2.create an Student object u

1-declare an object pointer for the Student class ? 2.create an Student object using the new operator and the default constructor ? c 3.all showStudentData(Student *) function and…

1-give the formula for the acid conjugate to each of the following bases NH 3 an

1-give the formula for the acid conjugate to each of the following bases NH3 and OH? 2-1-give the formula for the acid conjugate to each of the following bases NH3 and HCO3- ? ===…

1-heptanol has a pleasant aroma and is sometimes used in cosmetics to enhance th

1-heptanol has a pleasant aroma and is sometimes used in cosmetics to enhance the fragrance. Draw the structure for 1-heptanol. Is this a primary, secondary, or tertiary alcohol? …

1-hexene and HBr Separation Discussion: Must be written in a concise, well-organ

1-hexene and HBr Separation Discussion: Must be written in a concise, well-organized paragraph to address all parts of your separation, and should explain each step on the separat…

1-ll Bonus THE ELECTRONIC STRUCTURE OF ATOMS 1. Indicate whether each of the fol

1-ll Bonus THE ELECTRONIC STRUCTURE OF ATOMS 1. Indicate whether each of the following statements is trut or 8. Based on the relationship between electron configurations false a. …

1-methoxybutane (butyl methyl ether) was synthesized by the following reaction C

1-methoxybutane (butyl methyl ether) was synthesized by the following reaction CH OH Use the data from the Aldrich Catalog below to calculate the following Sodium methoxide FW 54.…

1-propanol (n-propanol), and 2-propanol (isopropanol), form ideal solutions in a

1-propanol (n-propanol), and 2-propanol (isopropanol), form ideal solutions in all proportions. Calculate the partial pressure of each component in equilibrium at 25 °C with a sol…

1-propanol (p* 1= 20.9 torr at 25 degree C) and 2-propanol (p*2 = 45.2 torr at 2

1-propanol (p* 1= 20.9 torr at 25 degree C) and 2-propanol (p*2 = 45.2 torr at 25 degree C) form ideal solutions in all proportions. Let xi and x2 represent the mole fractions of …

1-propanol (p*_1 = 20.9 torr at 25 degree C) and 2-propanol (p*_2 = 45.2 torr at

1-propanol (p*_1 = 20.9 torr at 25 degree C) and 2-propanol (p*_2 = 45.2 torr at 25 degree C) form ideal solutions in all proportions. Let x_1 and x_2 represent the mole fractions…

1-the primary type of interior-automatic bonding in bulk fe(s) is 2-the primary

1-the primary type of interior-automatic bonding in bulk fe(s) is 2-the primary type of interior-automatic bonding in bulk NaCl(s) is 3-the primary type of interior-automatic bond…

1-the primary type of interior-automatic bonding in bulk fe(s) is 2-the primary

1-the primary type of interior-automatic bonding in bulk fe(s) is 2-the primary type of interior-automatic bonding in bulk NaCl(s) is 3-the primary type of interior-automatic bond…

1-what is the electron geometry (or electron arrangements) around an atomic or i

1-what is the electron geometry (or electron arrangements) around an atomic or ion which is surrounded by three lone pairs of electrons and one single bond. a-tetrahedral b- tring…

1-when trying to determine the molar mass of on unknown copper compound a studen

1-when trying to determine the molar mass of on unknown copper compound a student starts with 4.112g of copper salt. They perform a redox reaction in the same way as we did last w…

1. ( 15 pts. ) Name ____________________ (15 pts.) The absorption of drug molecu

1. (15 pts.) Name ____________________ (15 pts.) The absorption of drug molecules such as aspirin (acetylsalicylic acid) depends on their ability to penetrate nonpolar cell membra…

1. ( 15 pts. ) Name ____________________ (15 pts.) The absorption of drug molecu

1. (15 pts.) Name ____________________ (15 pts.) The absorption of drug molecules such as aspirin (acetylsalicylic acid) depends on their ability to penetrate nonpolar cell membra…

1. ( 15 pts. ) Name ____________________ The absorption of drug molecules such a

1. (15 pts.) Name ____________________ The absorption of drug molecules such as aspirin (acetylsalicylic acid) depends on their ability to penetrate nonpolar cell membranes. A lar…

1. ( 15 pts. ) Name ____________________ The absorption of drug molecules such a

1. (15 pts.) Name ____________________ The absorption of drug molecules such as aspirin (acetylsalicylic acid) depends on their ability to penetrate nonpolar cell membranes. A lar…

1. ( computational software recommended for this problem) A distillation process

1.       (computational software recommended for this problem) A distillation process has been set up to separate an ethane-ethylene mixture as shown in the below diagram. The pro…

1. ( problem 3.2 ) For the task graphs in the given abouve figure, determine the

1. ( problem 3.2 ) For the task graphs in the given abouve figure, determine the following :              a.) Maximum degree of concurrency              b.) Critial path length   …

1. (+ points, 1 points per pair a. ??1d have the gr 1. Rinse a 50-mL. volumetric

1. (+ points, 1 points per pair a. ??1d have the gr 1. Rinse a 50-mL. volumetric flask with a small amount of extracting solution (0.05 M HCI+0.05 M H so.) before you start. 2. Ca…

1. (+)-Tartaric acid has a specific rotation of +12°. Calculate the specific rot

1. (+)-Tartaric acid has a specific rotation of +12°. Calculate the specific rotation of a mixture of 67 % (+)-tartaric acid and 33 % (-)-tartaric acid. 2. A pharmaceutical chemis…

1. (0.75 pts) The free energy change for an enzymatic reaction under cellular co

1. (0.75 pts) The free energy change for an enzymatic reaction under cellular conditions must be negative for a reaction to occur in the direction as written. Thus, the concentrat…

1. (1 point) What might be damaged by ionizing radiation? * paper soft tissue wo

1. (1 point) What might be damaged by ionizing radiation? * paper soft tissue wood lead 2. (1 point) When an atom emits an beta particle, what is the change in the atomic number? …

1. (1 point) _____ is the one standard atmosphere of pressure in kilospascals. *

1.   (1 point) _____ is the one standard atmosphere of pressure in kilospascals. * • 0 kPa • 1 kPa • 101.3 kPa • 760 kPa 2.   (1 point) Average kinetic energy is directly proporti…