Chemistry concepts and calculations

help please 1. what was the major composition of the vapor that escaped during t

help please 1. what was the major composition of the vapor that escaped during the glycerol plyester reaction? How did the evaporation of this component help drive the reaction to…

help please 10 minutes ASAP The second law of thermodynamics states that For the

help please 10 minutes ASAP The second law of thermodynamics states that For the reaction C_2 H (g) rightarrow C_2 H_4 (g) + H_2 (g) Delta H degree is +137 kJ/mol and Delta S degr…

help please 3. You have been given the task of purifying a 60 mL sample of tolue

help please 3. You have been given the task of purifying a 60 mL sample of toluene. In order to develop your plan of action, you ask about the impurities likely to be present in t…

help please 3. You have been given the task of purifying a 60 mL sample of tolue

help please 3. You have been given the task of purifying a 60 mL sample of toluene. In order to develop your plan of action, you ask about the impurities likely to be present in t…

help please 5. For which reaction mechanisms SNI, SN2, E1, or E2 are each of the

help please 5. For which reaction mechanisms SNI, SN2, E1, or E2 are each of the following statements ue? A statement may be true for one or more mechanisms 1. The mechanism invol…

help please 5. For which reaction mechanisms SNI, SN2, E1, or E2 are each of the

help please 5. For which reaction mechanisms SNI, SN2, E1, or E2 are each of the following statements ue? A statement may be true for one or more mechanisms 1. The mechanism invol…

help please ASAP!!! 1) A 0.040 M solution of a weak acid (HA) has a pH of 4.70.

help please ASAP!!! 1) A 0.040 M solution of a weak acid (HA) has a pH of 4.70. What is the pKa of the acid? 6.00 8.00 2.89 4.12 5.34 2) The following reaction has been studied at…

help please Asap Nicotinic acid (niacin) is a monoprotic acid with the formula H

help please Asap Nicotinic acid (niacin) is a monoprotic acid with the formula HC6H4NO2. A solution that is 0.012M in nicotinic acid has a pH of 3.39 at 25 degree C. What is the a…

help please B is part of question 6. need help on all Chemistry 3 - Second Hour

help please B is part of question 6. need help on all Chemistry 3 - Second Hour Exam The formula for the hexanitrocoba compounds formed from the hexanitrocobaltate (IIl) ion and c…

help please Calculate the heats of dissolution for lithium chloride and ammonium

help please Calculate the heats of dissolution for lithium chloride and ammonium chloride from Tabulated Delta Hf values, these can be found in Appendix B of your textbook or on-l…

help please Calculator Periodic Table Question 2 of 11 The following is a multi-

help please Calculator Periodic Table Question 2 of 11 The following is a multi-step reaction. The rate-limiting step is unimolecular, with A as the sole reactant A+B C+D "[A] and…

help please Consider the neutralization reaction below. NaOH(aq) +HF(aq) rightar

help please Consider the neutralization reaction below. NaOH(aq) +HF(aq) rightarrow H2O (I) + NaF(aq) If equal molar amounts of NaOH and HF are mixed together, Is the resulting so…

help please Determine the oxidation state of P in HPO_4^2. +3 +5 +2 0 -3 Determi

help please Determine the oxidation state of P in HPO_4^2. +3 +5 +2 0 -3 Determine the oxidation state of N in KNO_3. -4 +2 +4 +6 +5 Magnesium burns in air with a dazzling brillia…

help please Part A Calculating Equilibrium Constants Phosgene (carbonyl chloride

help please Part A Calculating Equilibrium Constants Phosgene (carbonyl chloride), COCl, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgen…

help please Show details of your work including the correct number of significan

help please Show details of your work including the correct number of significant figures and the proper unit. One line answers will be given a ZERO grade even if the answer is th…

help please What is delta G degree at 1000 degree C for the following reaction?

help please What is delta G degree at 1000 degree C for the following reaction? (Use data from Appendix C)CaCO3(s) CaO (s) + CO2(g) Is the reaction spontaneous at 1000 degree and …

help please When a strong base is added to a solution of CuSO_4, which is pale b

help please When a strong base is added to a solution of CuSO_4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. What is the net chemi…

help please and thank you 10. Which of the following have an enol form? I. benza

help please and thank you 10. Which of the following have an enol form? I. benzaldehyde, CHsCHO II. 2,2-dimethylpropanal, (CHs)CCHO III. 2-chloropropanal, CH,CHCICHO A. only I B. …

help please and thank you 4. Which of the following combinations is the ideal on

help please and thank you 4. Which of the following combinations is the ideal one for a mixed Claisen condensation? 6. Which of following conditions must be met for a Claisen cond…

help please and thank you Multiple Choice questions (28?) 1 Which of the followi

help please and thank you Multiple Choice questions (28?) 1 Which of the following compounds is the most polar one? 3. Which of the following ketones/aldehydes has the most acid a…

help please and thank you! 5. Which of the following compounds is most reactive

help please and thank you! 5. Which of the following compounds is most reactive in hydration reaction? 6. What is the best way to synthesize 7. Which of the following statements a…

help please idk if my answers are correct step by step solving please 1. At a te

help please idk if my answers are correct step by step solving please 1. At a temperature of 298 K, two organic liquids are found to have equilibriurm vapor pressures that are in …

help please im desperate!example problems!!! 1)A sample of argon occupies 195.7

help please im desperate!example problems!!! 1)A sample of argon occupies 195.7 mL at 1.74 atm and 12°C. If the volume is changed to 329 mL and the temperature ischanged to 8 °C, …

help please previous 6 of 10 The Octet Rule ResetHelp When main group elements r

help please previous 6 of 10 The Octet Rule ResetHelp When main group elements react, they tend to acquire eight outer-shell electrons (ns np). This is called an octet, and it is …

help please step by step... A.an aqueous solution of _____ is added to a mixture

help please step by step... A.an aqueous solution of _____ is added to a mixture ofF- and SO4 ^2- the fluoride ion will precipotate but thesulfate ion will remain in solution 1. A…

help please tp/aaw.saplingleaming.com/biscms/mod ibis view.phpid-1635112 w Favor

help please tp/aaw.saplingleaming.com/biscms/mod ibis view.phpid-1635112 w Favorites Tools Help o 5/16/2015 1 1:55 PM62/100 mpts Score Print CakuatorPeriodic Table Question 17 al …

help please! I need to know FOR SURE if I have the correct answers!!! Only respo

help please! I need to know FOR SURE if I have the correct answers!!! Only respond if you answer all parts please! Thanks in advance. ning.com/ibiscms/mod/ibis/view.php?id-2427462…

help please! MasteringChemistry Ch 14 Post Lecture Google Chrome à Secure https:

help please! MasteringChemistry Ch 14 Post Lecture Google Chrome à Secure https://session.masteringchemistry.com/myct/itemView?offset-nextBassignmentProblemiD 99062381 Ch 14 Post …

help please! MasteringChemistry Ch 14 Post Lecture Google Chrome à Secure https:

help please! MasteringChemistry Ch 14 Post Lecture Google Chrome à Secure https://session.masteringchemistry.com/myct/itemView?offset-nextBassignmentProblemiD 99062381 Ch 14 Post …

help please! The quiz question is as follows: You are planning to carry out a re

help please! The quiz question is as follows: You are planning to carry out a reaction at pH =4 that releases protons. Would it be better to use a 1.0 M formic acid/sodium buffer …

help please!! (15 POINTS) 15) A D Mareough star that contains an excess amount o

help please!! (15 POINTS) 15) A D Mareough star that contains an excess amount of helium can fuse three helium into carbon by ion process described below. Suppose the mass of a si…

help please, the answer is not 17.14 You have in front of you 100 mL of 7.00×10

help please, the answer is not 17.14 You have in front of you 100 mL of 7.00×102M HCl, 100 mL of 5.00×102M NaOH, and plenty of distilled water. Part A Assuming the final solution …

help please. THANKS! The oxidation number of an element is the \"charge\" the el

help please. THANKS! The oxidation number of an element is the "charge" the element would hay ionic; that is, if the electron pairs of each bond were transferred to the more For m…

help please.. Write chemical equations that represent the potential reactions of

help please.. Write chemical equations that represent the potential reactions of copper metal with the four metal ion solutions. Based on your observations, which ones occurred an…

help plz An experiment similar to the one performed in this lab was carried out

help plz An experiment similar to the one performed in this lab was carried out to determine the Ksp of PbCl2, The dissolved chloride in the filtered solution was quantitatively p…

help plz frnds An experiment similar to the one performed in this lab was carrie

help plz frnds An experiment similar to the one performed in this lab was carried out to determine the Ksp of PbCl2, MM = 278.10 g/mol The dissolved chloride in the filtered solut…

help plz or a or ward reaction, 2 A= 8, what 1vnal B) Kc C) 2 Kc D) (Ke2 4. Nitt

help plz or a or ward reaction, 2 A= 8, what 1vnal B) Kc C) 2 Kc D) (Ke2 4. Nittic oside reacts with osysgen to form nitrogen dionide 2 NO(g)+ 02(8)2 NO2(8) What is Ke for the rev…

help plz!! Write a program that will convert miles to kilometers and kilometers

help plz!! Write a program that will convert miles to kilometers and kilometers to miles. The user will indicate both a number (representing a distance) and a choice of whether th…

help plz. Match the following responses with the questions below. A Endpoint B T

help plz. Match the following responses with the questions below. A Endpoint B Titrant C Phenolphthalein D Primary Standard E Pump Dispenser F For this experiment: the condition t…

help question 22-26 please with Agr I the to final igh, Agci of such, the fins!

help question 22-26 please with Agr I the to final igh, Agci of such, the fins! reading would sus on the for the mass of original sample mass of paper 1.0051g mass of filter 22. H…

help so. which ib the comrecz quiliertian corstast espession foe the tedlowing m

help so. which ib the comrecz quiliertian corstast espession foe the tedlowing maction (Hal Fe,0,10H,l 11.The reaction, 2 H2S (g) 2H2 (g)(g. wu armed on in a lolontainer and the f…

help still needed with this problem. i was given an incorrect answer the answer

help still needed with this problem. i was given an incorrect answer the answer 4.88 is not correct Crude o oil pumped out of the ground may be accompanied by formation water, a s…

help to answer these questions A sample of ideal gas is in a sealed container. T

help to answer these questions A sample of ideal gas is in a sealed container. The pressure of the gas is 625 torr, and the temperature is 25 degree C . If the temperature changes…

help to answer these questions A sample of ideal gas is in a sealed container. T

help to answer these questions A sample of ideal gas is in a sealed container. The pressure of the gas is 625 torr, and the temperature is 25 degree C . If the temperature changes…

help to answer this question To draw a covalent Lewis structure and to identify

help to answer this question To draw a covalent Lewis structure and to identify bonding and nonbonding electrons. When covalent compounds, such as water (H2O). form covalent bonds…

help to answer this question To draw a covalent Lewis structure and to identify

help to answer this question To draw a covalent Lewis structure and to identify bonding and nonbonding electrons. When covalent compounds, such as water (H2O). form covalent bonds…

help to create Estimate sheet with drop downs I would like to create an Estimate

help to create Estimate sheet with drop downs I would like to create an Estimate form with many rows that will pull info from a second page (or "database" in excel in access??). F…

help to create Estimate sheet with drop downs I would like to create an Estimate

help to create Estimate sheet with drop downs I would like to create an Estimate form with many rows that will pull info from a second page (or "database" in excel in access??). F…

help vii. Explain the distinctly different behavior in the conductivity of NaCl(

help vii. Explain the distinctly different behavior in the conductivity of NaCl(s) and NaCl(aq). What species are present in each of these substances? Species Present NaClaq) NaCl…

help with #1 please 1) How many moles of NaOH would you need to neutralize 50.0

help with #1 please 1) How many moles of NaOH would you need to neutralize 50.0 mL of 0.250M Acetic Acid? A student performs an aqueous titration between an unknown polyprotic aci…