Chemistry concepts and calculations

2. Consider the following analysis. (Remember: A conclusion must state what ion

2. Consider the following analysis. (Remember: A conclusion must state what ion is/may be absent or present as well as what any ppt may be and what significant species may be in s…

2. Consider the following chemical reaction: 3 12(s 6OH- (aq) 5(a) O(aq)+3 H2OO

2. Consider the following chemical reaction: 3 12(s 6OH- (aq) 5(a) O(aq)+3 H2OO a) Calculate ?G. for this reaction as written above at 25°C. Is this reaction spontaneous or non- s…

2. Consider the following chemical reaction: The following thermochemical data i

2. Consider the following chemical reaction: The following thermochemical data is available at 298 K and 1 atm [CO2(g)]--393.5 kJ/mol S"Corp]-213.9 JK''mor1 So[H2(g)] =130.7 JK'"m…

2. Consider the following program: 1). program test(input, output) 2). var a:int

2. Consider the following program: 1). program test(input, output) 2). var a:integer; 3). procedure first; 4). begin write(a); a:=6; write(a); end; 5). procedure second; 6). var a…

2. Consider the following unbalanced redox reaction which is being used to run a

2. Consider the following unbalanced redox reaction which is being used to run a voltaic cell AL, + Cd2.ag) Al,"u, tca, 1(educed a. Write the balanced oxidation half-reaction for …

2. Consider the oxidation cyclodod ion of eyelododecanol (1) to cyelododecanone

2. Consider the oxidation cyclodod ion of eyelododecanol (1) to cyelododecanone (2) (E4 16.20) to answer the following (16 20) Cyclododecsaone A. B. C. What was the purpose of add…

2. Consider the reaction represented by the (unbalanced) equation: Mg(s) + HCl(a

2. Consider the reaction represented by the (unbalanced) equation: Mg(s) + HCl(a) MgCl,(aq)+ H2(g) Determine the mass of H,(g) that can be produced from the following: a. 10.0 g M…

2. Consider the simultaneous formation of multiple products in a chemical reacti

2. Consider the simultaneous formation of multiple products in a chemical reaction. Rate law dt a. Referring to problem lb above, find tf for this process. b. Given the initial co…

2. Consider this gas phase equilibrium system: PC15(g) ? PC13(g) + Cl2(g) AH\'m

2. Consider this gas phase equilibrium system: PC15(g) ? PC13(g) + Cl2(g) AH'm = +87.8 kJ/mol. Which of these statements is false? A) Increasing the system volume shifts the equil…

2. Consumers are instructed to keep mayonnaise based foods refrigerated to slow

2. Consumers are instructed to keep mayonnaise based foods refrigerated to slow the growth of pathogenic bacteria present. The following experiment was conducted to determine if l…

2. Control test tube A contains 1 mL each of solutions of BiCl, and NH3. Test tu

2. Control test tube A contains 1 mL each of solutions of BiCl, and NH3. Test tube B contains 1 mL each of solutions of BiCl, and NH3, and 1 g of NH4Cl. A clear gelatinous precipi…

2. Copper hydroxide is only very slightly soluble in water. The reaction by whic

2. Copper hydroxide is only very slightly soluble in water. The reaction by which it goes into solution is: Cu (OH)2(s) Cu2+(aq) + 2 OH-(aq) a. Formulate the expression for the eq…

2. Creep strain a. of cycles to failure Stress Environmental/ 5. nuotile to brit

2. Creep strain a. of cycles to failure Stress Environmental/ 5. nuotile to brittle Operational transition temperature Failure Impact energy Cold Hot Cyclic Low High Temperature F…

2. Cryofluorane, also known as Freon 114, is a chlorofluorocarbon which was once

2. Cryofluorane, also known as Freon 114, is a chlorofluorocarbon which was once used as a refrigerant and an aerosol propellant. It contains carbon, fluorine, and chlorine. The p…

2. Cubic potential (25 points total) Valley Velley I A cubic potential of the fo

2. Cubic potential (25 points total) Valley Velley I A cubic potential of the form V(Q)m 2 x (Fig 1) can be used to model decay of a metastable state, e.g. a hydrogen atom trapped…

2. Define a class called CreditCardAccount that will track a credit card account

2. Define a class called CreditCardAccount that will track a credit card account activity for a customer.    The class should have member variables to track the balance, interest …

2. Describe and explain the possible effect on your results of the following exp

2. Describe and explain the possible effect on your results of the following experimental errors or variations. (a) The reaction test tube contained water. (b) You heated the oil …

2. Describe how to make up the following solution: 250.0 mL of a 0.0200M solutio

2. Describe how to make up the following solution: 250.0 mL of a 0.0200M solution of AgNO. You are given solid AgNO, distilled water, and a 250 mL volumetric flask. Show your calc…

2. Describe how we would prepare 1.000L of 0.10 M NaOH from a stock solution tha

2. Describe how we would prepare 1.000L of 0.10 M NaOH from a stock solution that is 2.5M NaOH. 3. (a) What is the percentage of sodium in Na2CO3? Report answer to 3 significant f…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an

2. Describe how you would prepare 100ml of 0.08 M sulfuric acid [H2SO4] from an 18 M concentrated sulfuric acid stock solution. 3. Describe how you would prepare 50 ml of 0.2 M po…

2. Determine the TCP/IP protocol assigned the following port numbers: 19 7 162 2

2. Determine the TCP/IP protocol assigned the following port numbers: 19 7 162 25 111 520 5. Determine the meaning of the following session-bit flag fields: 11 hex 10 hex 18 hex 0…

2. Determine the change in temperature for each process by subtracting the initi

2. Determine the change in temperature for each process by subtracting the initial temperature f initial corrected temperature. work Table the Table 8. Change in temperature calcu…

2. Determine the weight of your product from reaction B. 3. Calculate the theore

2. Determine the weight of your product from reaction B. 3. Calculate the theoretical yield and percent yield for the octenes from your original weight of 2-octanol. 4. Comment ab…

2. Determine whether the following errors will lead to a heat quantity (q) large

2. Determine whether the following errors will lead to a heat quantity (q) larger in magnitude or a heat quantity (q) smaller in magnitude. Circle your answers. Higher q in magnit…

2. Dilution and Standardization of NaOH solution Obtain a beaker filled with dis

2. Dilution and Standardization of NaOH solution Obtain a beaker filled with distilled water. Fill the 500mL volumetric flask with distilled water to about one third of the way. U…

2. Diurnal cycle (20 points) 3-hourly measurements of surface temperature are li

2. Diurnal cycle (20 points) 3-hourly measurements of surface temperature are listed below. It was calm day with no significant advection of temperature or humidity. The surface p…

2. Do any of the pens or markers appear to contain common pigments? How can you

2. Do any of the pens or markers appear to contain common pigments? How can you tel if similar colored pigments form different pens are actually the same compound? Do any similar-…

2. Do the calculation below and round off your answer to the correct number of s

2. Do the calculation below and round off your answer to the correct number of significant figures: 26.72 +2.4- 3. Convert 52.3 millimeters into meters. Cross out all the units th…

2. Do the calculation below and round off your answer to the correct number of s

2. Do the calculation below and round off your answer to the correct number of significant figures: 26.72 +2.4- 3. Convert 52.3 millimeters into meters. Cross out all the units th…

2. Does the calculated value of ascorbic acid per tablet agree with the value li

2. Does the calculated value of ascorbic acid per tablet agree with the value listed on the label? Give an explanation as to why it does or does not NG 4 Edit Answer 3. Suppose th…

2. During a Chem 121 experiment, a student obtained the following data after hea

2. During a Chem 121 experiment, a student obtained the following data after heating a sample of Calcium Chloride hydrate Chemistry 121 Worksheet 1 (Summer 2014) Answers Data Weig…

2. During a Chem 121 experiment, a student obtained the following data after hea

2. During a Chem 121 experiment, a student obtained the following data after heating a sample of Calcium Chloride hydrate. Data Weight of crucible and lid (g) Weight of crucible, …

2. During a Chem 121 experiment, a student obtained the following data after hea

2. During a Chem 121 experiment, a student obtained the following data after heating a sample of Calcium Chloride hydrate Chemistry 121 Worksheet 1 (Summer 2014) Answers Data Weig…

2. During a Chem 121 experiment, a student obtained the following data after hea

2. During a Chem 121 experiment, a student obtained the following data after heating a sample of Calcium Chloride hydrate. Data Weight of crucible and lid (g) Weight of crucible, …

2. During the course ofyour career as a natural products chemist, you isolate a

2. During the course ofyour career as a natural products chemist, you isolate a newcompound from a plant in South America that has excellent cytotoxicactivity against tumor cells.…

2. During the extraction of trimyristin from nutmeg, the ground nutmeg is reflux

2. During the extraction of trimyristin from nutmeg, the ground nutmeg is refluxed with ether for some time and then filtered to remove the insoluble solids. After subsequent remo…

2. Error Analysis (4 pts) o Typed discussion of the degree of agreement between

2. Error Analysis (4 pts) o   Typed discussion of the degree of agreement between your trials. If error appears to be present, explain possible sources. Note that “human error” is…

2. Ethanol and methanol are both substrates for alcohol dehydrogenase (ADH). In

2. Ethanol and methanol are both substrates for alcohol dehydrogenase (ADH). In times of methanol poisoning, ethanol is given as treatment to prevent ADH from converting methanol …

2. Ethanol is supplied in a 90% solution. You need 275 mL of 75% Ethanol for you

2. Ethanol is supplied in a 90% solution. You need 275 mL of 75% Ethanol for your experiment. How would you make this solution? 3.You have 12 mL of cells you need to treat with Hy…

2. Explain how solubility tests could be used to differentiate between: a. a phe

2. Explain how solubility tests could be used to differentiate between: a. a phenol and a carboxylic acid. b. a phenol that contains electron-withdrawing groups and a phenol that …

2. Explain how you would test an unknown solution to conrm the presence of lead

2. Explain how you would test an unknown solution to conrm the presence of lead (II) ion in a mixture that contains both lead (II) and copper (II)ions. I put: To test for the pres…

2. Explain the effect of each of the following sources of error on the molarity

2. Explain the effect of each of the following sources of error on the molarity of NaOH as NaOH obtained would determined in this experiment stating whether the concentration of b…