Chemistry concepts and calculations

1-A HCl solution is titrated with a NaOH solution of known concentration. How mu

1-A HCl solution is titrated with a NaOH solution of known concentration. How much volume of NaOH 0.132 M is necessary to neutralize 10.00 mL of HCl 0.200 M? 2-A 5.00 mL sample of…

1-A KNO3 solution containing 47 g of KNO3 per 100.0 g of water is cooled from 44

1-A KNO3 solution containing 47 g of KNO3 per 100.0 g of water is cooled from 44 C to 0 C. What mass of KNO3 will precipitate? 2-An aqueous NaCl solution is made using 140 g of Na…

1-A KNO3 solution containing 47 g of KNO3 per 100.0 g of water is cooled from 44

1-A KNO3 solution containing 47 g of KNO3 per 100.0 g of water is cooled from 44 C to 0 C. What mass of KNO3 will precipitate? 2-An aqueous NaCl solution is made using 140 g of Na…

1-A helium weather balloon was filled at -20.°C and a certain pressure to a volu

1-A helium weather balloon was filled at -20.°C and a certain pressure to a volume of 2.5 × 10^4L with 1.2 × 10^3 mol He.What is the molar volume of helium under those conditions?…

1-A reaction from lab should theoretically produce 95.08 grams of product. If th

1-A reaction from lab should theoretically produce 95.08 grams of product. If the percent yield of this reaction is 56.65, how many grams did the reaction produce? 59.58 1.68 0.01…

1-An experiment identical to the one you just preformed is done by another stude

1-An experiment identical to the one you just preformed is done by another student.except the amperage is continuously increased while the sulfuric acid concentration is kept cons…

1-Approximately how many ozone molecules can one chlorine atom derived from one

1-Approximately how many ozone molecules can one chlorine atom derived from one CFC molecule react with? 1 100 1000 100000 2-Which molecule absorbs UV-B radiation? O2 O3 CO2 NO2 3…

1-Calculate the partial pressure (in atm) of CH 3 OH at equilibrium when 4.84 at

1-Calculate the partial pressure (in atm) of CH3OH at equilibrium when 4.84 atm of CH3I and 4.84 atm of H2O react at 3000 K according to the following chemical equation: Report yo…

1-Calculate the partial pressure (in atm) of Cl 2 at equilibrium when 4.38 atm o

1-Calculate the partial pressure (in atm) of Cl2 at equilibrium when 4.38 atm of COCl2 dissociates at 350 K according to the following chemical equilbrium: ***If the 5% approximat…

1-Calculate the partial pressure (in atm) of H 2 O at equilibrium when 59.6 g of

1-Calculate the partial pressure (in atm) of H2O at equilibrium when 59.6 g of CdO and 3.21 atm of H2 react at 800 K according to the following chemical equation: ***Report your a…

1-Chlorobutane (2.5 mL, d=0.886) in 20 mL of acetone is reacted with 90 mL of a

1-Chlorobutane (2.5 mL, d=0.886) in 20 mL of acetone is reacted with 90 mL of a 15 wt% solution of NaI in acetone. After work-up, you obtain 1.3 g  of 1-iodobutane. which is the l…

1-Chlorobutane is harmful if inhaled, ingested, or absorbed t the skin. Wear glo

1-Chlorobutane is harmful if inhaled, ingested, or absorbed t the skin. Wear gloves and use the reagent in a hood, if possible. SAFETY INFORMATION 2.2.4-Trimethylpentane is lammab…

1-Chlorobutane, 1-Bromobutane, Bromocyclopentane , Bromocyclohexane , 2- Chlorob

1-Chlorobutane, 1-Bromobutane, Bromocyclopentane ,Bromocyclohexane , 2- Chlorobutane , 2-Bromobutane, 2-Chloro-2-methylpropane, 2-Bromo-2-methylpropane are placeed in Sn2 and Sn1 …

1-Common commercial acids and bases are aqueous solutions with the following pro

1-Common commercial acids and bases are aqueous solutions with the following properties: nitric acid (HNO3), density 1.42 g/cm3 and 68% solute by mass. Calculate the molality. 2-C…

1-Crack is a form of cocaine codeine morphine heroin 2-Which substance occurs na

1-Crack is a form of cocaine codeine morphine heroin 2-Which substance occurs naturally? codeine heroin morphine Demorol 3-AZT fools the HIV virus by becoming part of its cell wal…

1-D 2- B>D>A>C 3-B??? 4- B Written Assignment 1 Ch 13-Alcohols (due 02/09/2016)

1-D 2- B>D>A>C 3-B??? 4- B Written Assignment 1 Ch 13-Alcohols (due 02/09/2016) 1. Which of the following structures represents 2-bromo-6-isobutyl-4-methyidec-3-en-1-o C.…

1-Describe how would you prepare 200.00mL of 0.150M sodium nitrate from the soli

1-Describe how would you prepare 200.00mL of 0.150M sodium nitrate from the solid? show calculation 2- How woud you make 150.00mL OF 0.300M sulfuric acid from a stock bottle that …

1-Evaluate the U.S. waterbudget,and identify critical aspects of present and fut

1-Evaluate the U.S. waterbudget,and identify critical aspects of present and futurefreshwater supplies. 2-Compare MD and CA in terms of main sources of watersupply. -Identify them…

1-Find the appropiate equilibrium constant (Kp) for the reaction below under the

1-Find the appropiate equilibrium constant (Kp) for the reaction below under the following conditions. 1/2SnO2 (s) + H2(g) <--> H2O(g) + 1/2 Sn(s) a)At 650 degrees celsius t…

1-For the reaction A + 3B ? 2C, the rate of disappearance of B given by (?[B]/?t

1-For the reaction A + 3B ? 2C, the rate of disappearance of B given by (?[B]/?t) may also be expressed as 2-Chlorine dioxide reacts in basic water to form chlorite and chlorate a…

1-Forms are used to a provide a more user-friendly way to work with data in tabl

1-Forms are used to a provide a more user-friendly way to work with data in tables a)True b)false 2-Which of the following is NOT a reserved word in Access: a) pixel b) data c) le…

1-Hematite is an ore of iron that is 69.9% by weight iron. How much hematite wou

1-Hematite is an ore of iron that is 69.9% by weight iron. How much hematite would be needed to provide 1500kg of iron? 2-Thr plantium in an automobile catalytic convert is worth …

1-How many grams of NaCl would be needed to prepare 150.00 L of a 1.402 M NaCl s

1-How many grams of NaCl would be needed to prepare 150.00 L of a 1.402 M NaCl solution? ..........................................................................................…

1-How many hydrogen-bond donors and acceptors are present in the following molec

1-How many hydrogen-bond donors and acceptors are present in the following molecule? HO OH 2-When mixed, which of the following pairs of compounds will exhibit both ion-dipole and…

1-Humans get cholesterol from the diet or they syn... Bookmark 1-Humans get chol

1-Humans get cholesterol from the diet or they syn... Bookmark 1-Humans get cholesterol from the diet or they synthesize it from Acetyl CoA. An adult on a low cholesterol diet syn…

1-Humans get cholesterol from the diet or they synthesize it from Acetyl CoA. An

1-Humans get cholesterol from the diet or they synthesize it from Acetyl CoA. An adult on a low cholesterol diet synthesizes around 600 mg cholesterol per day. This amount drops d…

1-Identify at least two differences between CLI and PowerShell. Explain why who

1-Identify at least two differences between CLI and PowerShell. Explain why who might use PowerShell. 2-You want to learn more about the dir command. Would you use /? or Help? Exp…

1-If 6.022 x 10 23 molecules of N 2 react according to the equation: N 2 + 3H 2

1-If 6.022 x 1023 molecules of N2 react according to the equation: N2 + 3H2 ? 2 NH3 the total number of molecules of ammonia produced is 1) 1.00 2) 2.00 3) 6.022 x 1023 4) 1.20 x …

1-If the capillary is overload with compound it will produce: a-light increase i

1-If the capillary is overload with compound it will produce: a-light increase in the melting point b- It does not matter c- A drop in the melting point value d- A wide melting po…

1-If you had excess aluminum, how many moles of aluminum chloride could be produ

1-If you had excess aluminum, how many moles of aluminum chloride could be produced from 36.0g of chlorine gas, Cl2? Express your answer to three significant figures and include t…

1-In part B pict attached What was the purpose of including test tubes 1 trough

1-In part B pict attached What was the purpose of including test tubes 1 trough 3 in your observations? 2- Did you findthat the digestion of tryacylglycerols is dependent upon tem…

1-Match the acid/base pair that is suitable for preparing a buffer of each given

1-Match the acid/base pair that is suitable for preparing a buffer of each given approximate concentration. You will need to refer to Tables in the book of weak acids and bases an…

1-Metathesis reactions are a family of reactions in which ions are removed from

1-Metathesis reactions are a family of reactions in which ions are removed from solution.  Precipitation reactions are one type of metathesis reaction.  Describe what happens in a…

1-Propanol has the^1 H NMR spectrum shown below. Map each hydrogen atom in the m

1-Propanol has the^1 H NMR spectrum shown below. Map each hydrogen atom in the molecule of 1-propanol with its corresponding peak number. Draw the molecule on the canvas by choosi…

1-Propanol, C3H8O can be oxidized by NaOCl, to propionic acid C3H6O2 and NaCl. B

1-Propanol, C3H8O can be oxidized by NaOCl, to propionic acid C3H6O2 and NaCl. Balance these half cells using the half cell method. You do NOT need to balance the entire redox rea…

1-Propanol, C3H8O can be oxidized by NaOCl, to propionic acid C3H6O2 and NaCl. B

1-Propanol, C3H8O can be oxidized by NaOCl, to propionic acid C3H6O2 and NaCl. Balance these half cells using the half cell method. You do NOT need to balance the entire redox rea…

1-Purification of chromium can be achieved by electrorefining chromium from an i

1-Purification of chromium can be achieved by electrorefining chromium from an impure chromium anode onto a pure chromium cathode in an electrolytic cell. How many hours will it t…

1-Show what the array would look like at each step when the heapIncreaseKey oper

1-Show what the array would look like at each step when the heapIncreaseKey operation (increase the key value of the 8th node from 2 to 20) is performed on the max-heap array show…

1-Small quantities of oxygen can be prepared in the laboratory by heating potass

1-Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The equation for the reaction is kclo3 2kcl----2kcl+3o2 Calculate how many …

1-Small quantities of oxygen can be prepared in the laboratory by heating potass

1-Small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KClO3(s). The equation for the reaction is kclo3 2kcl----2kcl+3o2 Calculate how many …

1-Solve using matlab codes Figure 1 shows a schematic model of the human arm. a

1-Solve using matlab codes Figure 1 shows a schematic model of the human arm. a is the angle between the upper arm and the shoulder. and is the elbow angle. We define q1 and q2 fr…

1-The 3 basic data types of Labview are: a-string, float and array b-string, boo

1-The 3 basic data types of Labview are: a-string, float and array b-string, boolean and number c-string, integer and float d-string, boolean and float 2-1 dimensional arrays can …

1-The energy of a photon emitted when an electron underwent a transition to n =

1-The energy of a photon emitted when an electron underwent a transition to n = 1 energy level was 2.092x10-18 J. What was the initial energy level for the electron? Options ( 2,3…

1-The following procedure provides a crude method of determining the molar mass

1-The following procedure provides a crude method of determining the molar mass of a volatile liquid. A liquid of mass 0.0175 g is introduced into a syringe and the end is capped …

1-The following reaction was carried out in a 2.00L reaction vessel at 1100 K: C

1-The following reaction was carried out in a 2.00L reaction vessel at 1100 K: C(s)+H2O(g)?CO(g)+H2(g) If during the course of the reaction, the vessel is found to contain 6.00mol…

1-The half-life of cesium-129 is 32.0 hours . How much time is required for the

1-The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of cesium-129 to fall to 16.6 percent of its original value? hrs B)Chromium-51 …

1-The laboratory manual specifies two types of errors in measurements. What are

1-The laboratory manual specifies two types of errors in measurements. What are these errors? Briefly describe each kind and provide examples 2-What is meant by the terms (a) accu…

1-The mineral limestone is used to reduce the acidity of soil. Limestone consist

1-The mineral limestone is used to reduce the acidity of soil. Limestone consists primarily of calcium carbonate, CaCO3.Calcium carbonate reacts with hydrochloric acid to from cal…

1-The quantity, 37,000 disintegration per second, is 1 curie 1 microcurie half-l

1-The quantity, 37,000 disintegration per second, is 1 curie 1 microcurie half-life of carbon-14 1 bequerel 2-Elements with atomic number greater than 83 beyond bismuth, Bi are be…

1-The quaternary structure of proteins is the direction of twisting of the helic

1-The quaternary structure of proteins is the direction of twisting of the helical structure the aggregation of the tertiary or secondary structures a four-side protein structure …