Chemistry concepts and calculations
117302 questions • Page 107 / 2347
1. Are the following molecules structural isomers or arethey identical? CH3-CH-C
1. Are the following molecules structural isomers or arethey identical? CH3-CH-CH3 [ CH2…
1. Are they (I and II) identical (superimposable) or different (non-superimposab
1. Are they (I and II) identical (superimposable) or different (non-superimposable)? 2. Are they isomers? Explain your answer. When a carbon is attached to four diffeent oms or gr…
1. Are used to show the number of each ion in the formula. 2. Used to show the n
1. Are used to show the number of each ion in the formula. 2. Used to show the number of atoms of each element when naming a molecular compound. 3. Carbon compounds are a special …
1. Arrange each group of compounds/ions in order of increasing pH and please exp
1. Arrange each group of compounds/ions in order of increasing pH and please explain I will rate. a) (3 pts) Li2CO3 OH- NH4Br …
1. Arrange each group of compounds/ions in order of increasing pH. Can you also
1. Arrange each group of compounds/ions in order of increasing pH. Can you also briefly explain why. a) (3 pts) H2SeO3...... H2SeO4 ..... …
1. Arrange each group of compounds/ions in order of increasing pH. Can you also
1. Arrange each group of compounds/ions in order of increasing pH. Can you also briefly explain why. a) (3 pts) H2SeO3...... H2SeO4 ..... …
1. Arrange the following atoms in order of increasingionization energy: lithium,
1. Arrange the following atoms in order of increasingionization energy: lithium, oxygen,magnesium,strontium,chlorine,and tellurium. Explain your order.? 2. Look at your model. Why…
1. Arrange the following elements in order of increasing electronegativity: gall
1. Arrange the following elements in order of increasing electronegativity: gallium, germanium, calcium, arsenic ___________________ smallest __________________ __________________…
1. Arrange the following groups in order of decreasing priority that would allow
1. Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S. Provide a string of letters (e.g. abcd) as an answer with the highes…
1. Arrange the following sets of compounds in order of increasing solubility in
1. Arrange the following sets of compounds in order of increasing solubility in water. Briefly explain your answer. 2. Arrange the following sets of compounds in order of increasi…
1. Arrange the following sets of compounds in order of increasing solubility in
1. Arrange the following sets of compounds in order of increasing solubility in water. Briefly explain your answer. 2. Arrange the following sets of compounds in order of increasi…
1. Arrange this group of molecules in order of increasing polarity: (Threonine M
1. Arrange this group of molecules in order of increasing polarity: (Threonine Methionine Lysine). Briefly explain your reasoning. 2. A shard of clear, colorless solid has become …
1. As I write this test the sidewalk between my house and garage is covered with
1. As I write this test the sidewalk between my house and garage is covered with at least 6 inches of snow. If I did my math correctly this amounts to about 255 kg of water. How m…
1. As a dialysis patient, Michelle has a 4-h dialysis treatment three times a we
1. As a dialysis patient, Michelle has a 4-h dialysis treatment three times a week. When she arrives at the dialysis clinic, her weight, temperature, and blood pressure are taken …
1. As a follow up question, which can Severus use? That is, which one of the fol
1. As a follow up question, which can Severus use? That is, which one of the following is soluble in water. a. PbI2 b. PbCl2 c. NH3 d. AgCl e. BaCO3 2. Let's try one more. What is…
1. As a physician your patient, a 22 year old male, appears to becyanotic. He re
1. As a physician your patient, a 22 year old male, appears to becyanotic. He reports frequent headaches and that he becomes easilyfatigued and out of breath when he exercises. Yo…
1. As a very rough approximation, an electron in a quantum dot can be thought of
1. As a very rough approximation, an electron in a quantum dot can be thought of as an electron in a 3D box. By analogy to the 2D box, write down an expression for the energy leve…
1. As emphasized above, identify an organization whose cybersecurity policy is a
1. As emphasized above, identify an organization whose cybersecurity policy is available. Federal civil sector organizations may be candidates or state governments. A company wher…
1. As pure elements, all of the hal are diatomic molecular species. Their meltin
1. As pure elements, all of the hal are diatomic molecular species. Their melting points are: Fa, 85 K, Cl2, 239 K, Bra, 332 K, and l,, 457 K. Using the Periodic Table, predict as…
1. As pure elements, all of the halogens are diatomic molecular species. Their m
1. As pure elements, all of the halogens are diatomic molecular species. Their melting points are: F2, 85 K, Cl2, 239 K, Br2, 332 K, and I2, 457 K. Using the Periodic Table, predi…
1. As pure elements, all of the halogens are diatomic molecular species. Their m
1. As pure elements, all of the halogens are diatomic molecular species. Their melting points are: F2, 85 K, Cl2, 239 K, Br2, 332 K, and I2, 457 K. Using the Periodic Table, predi…
1. As we exercise, our bodies metabolize glucose, converting it to CO2 and H2O,
1. As we exercise, our bodies metabolize glucose, converting it to CO2 and H2O, to supply the energy necessary for physical activity. The simplified reaction is: C6H12O6(aq)+6O2(g…
1. As you know by now, the ICP when coupled with atomic emission spectrometer or
1. As you know by now, the ICP when coupled with atomic emission spectrometer or mass spectrometer will result in very powerful analytical techniques called ICP-OES and ICP-MS tha…
1. Ascorbic acid can be reduced to dehydroascorbic acid. True/False 2. When does
1. Ascorbic acid can be reduced to dehydroascorbic acid. True/False 2. When does the titration endpoint occur in the Vitamin C analysis lab (be specific)? 3. An unknown sample is …
1. Ask the user to enter a digit between 0 and 9. Have the program print out the
1. Ask the user to enter a digit between 0 and 9. Have the program print out the digit in words, for example: Enter a digit between 0 and 9: 4 You entered the number four Assume t…
1. Aspirin can be prepared by the reaction of salicyue acid, and acetic acid or
1. Aspirin can be prepared by the reaction of salicyue acid, and acetic acid or acetic anhydride, which one favored and why? 2. In the compound shown below, identify the acyL corb…
1. Assertions. You will identify various assertions as being either always true,
1. Assertions. You will identify various assertions as being either always true, never true or sometimes true/sometimes false at various points in program execution. The comments …
1. Assign an oxidation number to each atom in the reactants. 2CO( g )+O2( g )2CO
1. Assign an oxidation number to each atom in the reactants. 2CO(g)+O2(g)2CO2(g) Express your answers as signed integers separated by commas. For example: +1, +2, +3. 2. Assign an…
1. Assign the relative Rf values you would expect for the standard compounds (ib
1. Assign the relative Rf values you would expect for the standard compounds (ibuprofen, acetaminophen, aspirin, and caffeine) if they were all run on the same TLC plate in an app…
1. Assume that carbon dioxide in a 2.00 L soda bottle is dissolved at a pressure
1. Assume that carbon dioxide in a 2.00 L soda bottle is dissolved at a pressure of 2.07 bar. At 2.2 °C, the Henry's law constant for carbon dioxide dissolved in water is 0.068 Ca…
1. Assume that carbon dioxide in a 2.00 L soda bottle is dissolved at a pressure
1. Assume that carbon dioxide in a 2.00 L soda bottle is dissolved at a pressure of 2.07 bar. At 2.2 °C, the Henry's law constant for carbon dioxide dissolved in water is 0.068 Ca…
1. Assume that the rate law for a reaction is rate = k[A][B]^2 a) what is the ov
1. Assume that the rate law for a reaction is rate = k[A][B]^2 a) what is the overall order of the reaction? b) if the concentration of both A and B are doubled, how will this aff…
1. Assume that the solubility of caffeine in water is 4.0 g/100 mL and in methyl
1. Assume that the solubility of caffeine in water is 4.0 g/100 mL and in methylene chloride it is 16.0 g/100 mL at 25°C. What is KD for this system? 3. Once you calculate KD, cal…
1. Assume that you are given two lists A, B of the same size, n, of positive and
1. Assume that you are given two lists A, B of the same size, n, of positive and negative integer values. The problem is to find all the pairs of values, (a, b), a from A, b from …
1. Assume that you can measure the effects of identical concentration of two inh
1. Assume that you can measure the effects of identical concentration of two inhibitors x and Z, on the K and V M and Vmax of an Enzyme. Which of the following would be consistent…
1. Assume that you have a cylinder with a movable piston. What would happen to t
1. Assume that you have a cylinder with a movable piston. What would happen to the gas pressure inside the cylinder if you do the following? A. Decrease the volume to one-fourth t…
1. Assume that you start with 0.495 g of copper turnings: a)Calculate the initia
1. Assume that you start with 0.495 g of copper turnings: a)Calculate the initial number of moles of Cu. ANSWER CALCULATED ALREADY: 7.79×10-3 mol b) Calculate the minimum volume o…
1. Assume that your vinegar contained a small amount of citric acid (a triprotic
1. Assume that your vinegar contained a small amount of citric acid (a triprotic acid). Using the same experimental data, would you expect the molarity of this…
1. Assume the following facts. Let be an alphabet. (a) For all strings w , w = w
1. Assume the following facts. Let be an alphabet. (a) For all strings w , w = w = w. ( is the identity element for string concatenation.) (b) For all strings w , w 0 = . (c) For …
1. Assume the range of concentrations for the unknown acids is between 0.30 M an
1. Assume the range of concentrations for the unknown acids is between 0.30 M and 0.80 M and that you will be titrating a 5-mL aliquot of an unknown acid with 0.250 M NaOH. a. Wha…
1. Assume the range of concentrations for the unknown acids is between 0.30 M an
1. Assume the range of concentrations for the unknown acids is between 0.30 M and 0.80 M and that you will be titrating a 5-mL aliquot of an unknown acid with 0.250 M NaOH. a. Wha…
1. Assume the velocity of a rocket for the first 2 minutes of flight after lifto
1. Assume the velocity of a rocket for the first 2 minutes of flight after liftoff can be described by 2 v 0.65*t where v is velocity (m/s) and t is time (sec.). Then it reaches a…
1. Assume the vinegar is 5.00 % acetic acid by mass and the density of vinegar i
1. Assume the vinegar is 5.00 % acetic acid by mass and the density of vinegar is 1.00 g/mL. Assume you have a 0.2000 M NaOH solution. Calculate the volume (in mL) of NaOH needed …
1. Assume you began with 5.2 mL of bromobenzene, calculate how many moles of the
1. Assume you began with 5.2 mL of bromobenzene, calculate how many moles of the compound you will use. 2. If you synthesized 6.09 grams of p-bromonitrobenzene, how many mmoles of…
1. Assume you measured out8.010 g of n-butyl bromide. In the end you produced an
1. Assume you measured out8.010 g of n-butyl bromide. In the end you produced and recoveredonly 6.465 g of n-butyl bromide. A)calculate the number of moles of n-butyl alcoho…
1. Assume you were given a solution that was said to contain Ca^2+ cations only.
1. Assume you were given a solution that was said to contain Ca^2+ cations only. Describe how you would confirm or deny the presence of this cation in the solution. Explain your r…
1. Assuming a stock concentration of 0.075 mM fluorescein, calculate the volume
1. Assuming a stock concentration of 0.075 mM fluorescein, calculate the volume necessary to make 100 mL of a 0.00009 mM fluorescein standard. The volumes will be fairly small and…
1. Assuming a three-bit exponent field and a four-bit significand, what decimal
1. Assuming a three-bit exponent field and a four-bit significand, what decimal value is represented byt this bit pattern: 1 111 1001 ______ 2. Assuming a three-bit exponent field…
1. Assuming a three-bit exponent field and a four-bit significand, what decimal
1. Assuming a three-bit exponent field and a four-bit significand, what decimal value is represented byt this bit pattern: 1 111 1001 ______ 2. Assuming a three-bit exponent field…
1. Assuming a three-bit exponent field and a four-bit significand, what decimal
1. Assuming a three-bit exponent field and a four-bit significand, what decimal value is represented byt this bit pattern: 1 111 1001 ______ 2. Assuming a three-bit exponent field…
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