Chemistry concepts and calculations

1. In this organic chemistry lab, why do we determine meiting points? A. It prov

1. In this organic chemistry lab, why do we determine meiting points? A. It provides information about the polarity of a sample B. It provides information for the amount of sample…

1. In this organic chemistry lab, why do we determine meiting points? A. It prov

1. In this organic chemistry lab, why do we determine meiting points? A. It provides information about the polarity of a sample B. It provides information for the amount of sample…

1. In this question, you will explore the concept of nuclear fission and how it

1. In this question, you will explore the concept of nuclear fission and how it works to power the Sun. Though there are steps in between, the process begins with 4 protons and en…

1. In three dimensions, what is the greatest angle that can be achieved between

1. In three dimensions, what is the greatest angle that can be achieved between four equivalent bonds? Formatting help: Just enter a number like 231.12, do not include "degrees". …

1. In well i, you allowed the chemical NH 3 and CuSO 4 to react. This reaction p

1. In well i, you allowed the chemical NH3 and CuSO4 to react. This reaction produced a thick, dark blue precipitate known as tetramminecopper(II) sulfate. This chemical was first…

1. In what total volume (mL) must 331.3 mg of NaOH be dissolved in order to make

1. In what total volume (mL) must 331.3 mg of NaOH be dissolved in order to make a solution with a molar analytical concentration of 0.353 M? 2. What mass in grams of sodium carbo…

1. In which of the following scenarios does allele q have the highest likelihood

1. In which of the following scenarios does allele q have the highest likelihood of going to fixation in the future, assuming that genetic drift is the only evolutionary force? a.…

1. In which period and which group is the element that has the ground-state elec

1. In which period and which group is the element that has the ground-state electron configuration [Rn]7s2? 2. What Element is it? 3. In which period and which group is the elemen…

1. In your own words, what is a C pointer? 2. Given the following information, f

1. In your own words, what is a C pointer? 2. Given the following information, fill in the blanks in the Statement and Output columns. For the output, just provide the number, not…

1. In your role as a corrosion scientist, you are required to undertake corrosio

1. In your role as a corrosion scientist, you are required to undertake corrosion rate measurements in the laboratory. (a) For some initial measurements, you have prepared an aque…

1. Indicate how you could distinguish between the following pairs of compounds b

1.   Indicate how you could distinguish between the following pairs of compounds by using infrared spectroscopy. a Butanal 2-Butanone b 3-Cyclohexenone 2-Cyclohexenone c Diethylam…

1. Indicate if the following pair of structures represent isomers, cis-trans iso

1. Indicate if the following pair of structures represent isomers, cis-trans isomers, or the same molecule: a).structural isomers b).cis-trans isomers c).the same molecule 2. Indi…

1. Indicate the concentration of each ion present in the solution formed by mixi

1. Indicate the concentration of each ion present in the solution formed by mixing the following. (Assume that the volumes are additive.) (a) 40 mL of 0.100 M HCl and 10.0 mL of 0…

1. Indicate the concentration of each ion present in the solution formed by mixi

1. Indicate the concentration of each ion present in the solution formed by mixing the following. (Assume that the volumes are additive). (a) 50 mL of 0.100 M HCl and 10.0 mL of 0…

1. Indicate the effect of each of the following procedural mistakes on the repor

1. Indicate the effect of each of the following procedural mistakes on the reported concentration of the solution. Is the reported concentration too high, too low, or unaffected? …

1. Indicate what the following would do to your results: a) When measuring the a

1. Indicate what the following would do to your results: a) When measuring the acetylsalicylic acid solid, some was not transferred to the volumetric flask. b) When transferring t…

1. Indicate whether the following balanced equations inviove oxidation reduction

1. Indicate whether the following balanced equations inviove oxidation reduction. If they do, identify the elements that undergo changes in oxidation number. a) PBr3(l) + 3 H2O (l…

1. Indicate whether the following balanced equations involve oxidation-reduction

1. Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changed in oxidation number: 2. A voltaic cell is …

1. Indicate whether the following balanced equations involve oxidation-reduction

1. Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changed in oxidation number: 2. A voltaic cell is …

1. Indicate whether the following balanced equations involve oxidation-reduction

1. Indicate whether the following balanced equations involve oxidation-reduction. If they do, identify the elements that undergo changed in oxidation number: 2. A voltaic cell is …

1. Indicate whether the solute solid is soluble or insoluble in each solvent liq

1. Indicate whether the solute solid is soluble or insoluble in each solvent liquid. SOLVENT nonpolar liquid, CoH14 polarl SOLUTE salt, NaCl sugar, CoH120 cholesterol, C27H460 2 l…

1. Indicate which is Lewis acid, and which is Lewis base: - PH, Fe CH;NH2, NO,K

1. Indicate which is Lewis acid, and which is Lewis base: - PH, Fe CH;NH2, NO,K 2. The following reaction is taking place in aqueous solution: Identify the Bronsted Acid, base, co…

1. Infrared Spectrum - On the IR spectrum, label all pertinent peak(s) 2·The Ele

1. Infrared Spectrum - On the IR spectrum, label all pertinent peak(s) 2·The Elemental Analysis. Show Calculations for obtaining the Empirical Formula %N Empirical Formula: Calcul…

1. Initially, only A and B are present, each at 2.00 M . What is the final conce

1. Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and includ…

1. Instant cold packs, commonly used by athletic and medical professionals, cons

1. Instant cold packs, commonly used by athletic and medical professionals, consist of a bag of water inside another bag which contains ammonium nitrate. By squeezing the outer ba…

1. Instead of using the variables: num1 and num2 create an array variable named

1. Instead of using the variables: num1 and num2 create an array variable namedNumberInput of size 2 to save input in from the keyboard... (10 points) // includes all necessary he…

1. Interpret the following equation for a chemical reaction using the coefficien

1. Interpret the following equation for a chemical reaction using the coefficients given: On the particulate level: _________one moleculetwo moleculesone moletwo moles of Br2(g) r…

1. Interpret the following equation for a chemical reaction using the coefficien

1. Interpret the following equation for a chemical reaction using the coefficients given: On the particulate level: _________one moleculetwo moleculesone moletwo moles of Br2(g) r…

1. Iodine is very slightly soluble in water, but its solubility is so low that i

1. Iodine is very slightly soluble in water, but its solubility is so low that it is very difficult to see any concentration gradients. Yet it is very esy to determine experimenta…

1. Iodine is very slightly soluble in water, but its solubility is so low that i

1. Iodine is very slightly soluble in water, but its solubility is so low that it is very difficult to see any concentration gradients. Yet it is very esy to determine experimenta…

1. Iodine-131, t(1/2)= 8.0 days, is used in diagnosis and treatment of thyroid g

1. Iodine-131, t(1/2)= 8.0 days, is used in diagnosis and treatment of thyroid gland diseases. If a laboratory sample of Iodine-131 initially emits 9.95E18 beta particles per day,…

1. Iron metal is produced commercially by reducing iron(iI) oxide in iron ore wi

1. Iron metal is produced commercially by reducing iron(iI) oxide in iron ore with carbon monoxide: Fe2Ods) + 3 CO(g) 2 Fe(s) + 3 CO2(g) "(a) (i) Calculate the standard enthalpy c…

1. Iron sulfide, FeS, is a sparingly soluble salt with a Ksp of 6.3 x 10^-18. a)

1. Iron sulfide, FeS, is a sparingly soluble salt with a Ksp of 6.3 x 10^-18. a) Write the chemical equation for the dissolution of iron sulfide. b) Write the solubility product e…

1. Is it a quadrupole mass spectrometer? 2. How long is it? 3. What ranges of m/

1. Is it a quadrupole mass spectrometer? 2. How long is it? 3. What ranges of m/z can this instrument detect? 4. Will you be able to use it to detect proteins? 5. What is the high…

1. Is it feasible to create a portable battery powered drive out of RAM that cou

1. Is it feasible to create a portable battery powered drive out of RAM that could sustain its data via the charge of a battery? From my understanding it doesn't require much powe…

1. Is it reasonable to say that enzymes lower the energy of the transition state

1. Is it reasonable to say that enzymes lower the energy of the transition state for a reaction? 2. Why is the reaction faster when the liver is ground up? 3. Energy profile for c…

1. Is oxygen a slow killer, and the reason we as carbon-based lifeforms do not l

1. Is oxygen a slow killer, and the reason we as carbon-based lifeforms do not live long? Humans need oxygen for basic survival, it is how energy is created in our cells. However,…

1. Is the equivalence point of a weak acid-strong base titration acidic, neutral

1. Is the equivalence point of a weak acid-strong base titration acidic, neutral, or basic? 2. How is pKa determined from a weak acid-strong base titration? 3. A 0.6385 g sample o…

1. Is there a relationship between time and distance in movement of ammonia mole

1. Is there a relationship between time and distance in movement of ammonia molecules? 2.discuss the relationship with supporting measurements below. 3. Is the diffusion of ammoni…

1. Isoamyl salicylate ( Molar mass = 208.25 g/mol) has a pleasant aroma and is u

1. Isoamyl salicylate ( Molar mass = 208.25 g/mol) has a pleasant aroma and is used in perfumes and soaps. Which of the following combinations gives a 0.75 msolution of isoamyl sa…

1. Isopropyl alcohol is mixed with water to produce a 35.0% (v/v) alcohol soluti

1. Isopropyl alcohol is mixed with water to produce a 35.0% (v/v) alcohol solution. How many milliliters of each component are present in 745 mL of this solution? (Assume that vol…

1. It can be said that events, which are the centerpieces of event-driven progra

1. It can be said that events, which are the centerpieces of event-driven programming, have 3 stages in their life-cycle: -Registering the Event                                   …

1. It can contain the purine adenine. -->DNA only --> RNA only --> Both -->Neith

1. It can contain the purine adenine. -->DNA only --> RNA only --> Both -->Neither 2. It can contain the pyrimidine uracil. -->DNA only --> RNA only --> Both …

1. It is found that the concentration of Pb2+ in a saturated solution of lead(II

1. It is found that the concentration of Pb2+ in a saturated solution of lead(II) fluoride is 3.0 * 10^-3 M. What is Ksp for PbF2? a. 1.3*19^-9 b. 9.1*10^-3 c. 9.1*10^-6 d. 2.8*10…

1. It is important to remember that the same grouping of orbitals will have diff

1. It is important to remember that the same grouping of orbitals will have different symmetry labels when you solve for their irreducible representations in different point group…

1. It is known that when an ester forms, the hydroxyl group from the acid reacts

1. It  is  known  that  when  an  ester  forms,  the hydroxyl group  from  the  acid  reacts  with  the hydrogen atom  on  the  alcohol  to  form  water,  rather  than  the hydrox…

1. It requires 25.05 mL of NaOH solution of unknown concentration to titrate 25.

1. It requires 25.05 mL of NaOH solution of unknown concentration to titrate 25.00 mL of 0.1000 M H2SO4 solution. The chemical equation that summarizes the reactio is H2SO4 + 2NaO…

1. Jan hears about a new diet plan that she is very excited about as it promises

1. Jan hears about a new diet plan that she is very excited about as it promises that she will lose weight very quickly. The plan excludes almost all fat from the diet. Based on w…

1. Justify the purpose of the following in this experiment: a. using concentrate

1. Justify the purpose of the following in this experiment: a. using concentrated (and not dilute) sulfuric acid b. adding excess acetic acid c. extracting with sodium bicarbonate…

1. Justify which of the following produces the lowest value of pH? 5.98) A) anil

1. Justify which of the following produces the lowest value of pH? 5.98) A) aniline (pK 9.37) B)pyridine (pKb-8.75 C) nicotine (pK D) ammonia (pK,4.74) E) methylamine (pK 3.44) 2.…