Chemistry concepts and calculations

he shell of an egg from a chicken is mostly made of calcium carbonate, lined wit

he shell of an egg from a chicken is mostly made of calcium carbonate, lined with a semipermeable membrane. The shell of the egg can be dissolved using acetic acid (vinegar). The …

he tablet mL of this solution is added to 9. A tablet, with a mass of 1.545 g, i

he tablet mL of this solution is added to 9. A tablet, with a mass of 1.545 g, is analyzed for the amount of zinc it contains. T is dissolved in water to make 2.00 L of solution. …

he thermodynamic properties for a reaction are related by the equation that defi

he thermodynamic properties for a reaction are related by the equation that defines the standard free energy, G, in kJ/mol: G=HTS where H is the standard enthalpy change in kJ/mol…

he total entropy change for a t process is where AS, and AS ur are the entropy p

he total entropy change for a t process is where AS, and AS ur are the entropy pontaneous process asuw> 0 For a process at constant P ard T, we can use an alternative criter on…

he triprotic acid H3A has ionization constants of Ka1 = 8.4× 10–4, Ka2 = 9.1× 10

he triprotic acid H3A has ionization constants of Ka1 = 8.4× 10–4, Ka2 = 9.1× 10–7, and Ka3 = 9.0× 10–11. Calculate the following values for a 0.0320 M solution of NaH2A I have on…

he vapor pressure, P, of a certain liquid was measured at two temperatures, T. T

he vapor pressure, P, of a certain liquid was measured at two temperatures, T. The data is shown right below: T(K) P(kPa) 255 371 775 6,56 If you were going to graphically determi…

he voltage of an electrochemical cell is also related to the Gibbs free energy o

he voltage of an electrochemical cell is also related to the Gibbs free energy of its chemical reaction through the relationship of G = -nFE, where n is the number of electrons tr…

he web... Google structure.com/courses/112712/assignments/144236 submit Below yo

he web... Google structure.com/courses/112712/assignments/144236 submit Below you will find the kinetics data for the reaction Kc. 0.44 open up the following spreadsheet for data …

he where you would expect the chemical shift for each to be from the chemical ne

he where you would expect the chemical shift for each to be from the chemical ne (circle) 10-9 9-8 8-7 7-6 6-5 5-4 4-3 3-2 2-1 1-0 10-9 9-8 8-7 7-6 6-5 54 4-3 3-2 2-1 1-0 10-9 9-8…

he where you would expect the chemical shift for each to be from the chemical ne

he where you would expect the chemical shift for each to be from the chemical ne (circle) 10-9 9-8 8-7 7-6 6-5 5-4 4-3 3-2 2-1 1-0 10-9 9-8 8-7 7-6 6-5 54 4-3 3-2 2-1 1-0 10-9 9-8…

heat of Neutralization experiment 28 Heat Capacity of Calorimeter Temp of calori

heat of Neutralization experiment 28 Heat Capacity of Calorimeter Temp of calorimeter and water before mixing degree C Temp of warm water degree C Maximum temp. determined from yo…

heat of solution Name Instructor/Section PRE-LAB or POST-LAB QUIZ Multiple choic

heat of solution Name Instructor/Section PRE-LAB or POST-LAB QUIZ Multiple choice questions. Circle your answers. The amount of heat absorbed by the calorimeter contents is a. the…

heat of solution: I will have this experiment on next lab and want to be prepare

heat of solution: I will have this experiment on next lab and want to be prepared for it but don't know how to calculate some things like molarity, initial and final temperature, …

heat released from combustion reaction in the car engine is the propelling force

heat released from combustion reaction in the car engine is the propelling force the drives the car forward. The heat(energy) is often measured in BTU( British Thermal Unit). The …

heat released from combustion reaction in the car engine is the propelling force

heat released from combustion reaction in the car engine is the propelling force the drives the car forward. The heat(energy) is often measured in BTU( British Thermal Unit). The …

heat released from combustion reaction in the car engine is the propelling force

heat released from combustion reaction in the car engine is the propelling force the drives the car forward. The heat(energy) is often measured in BTU( British Thermal Unit). The …

heavy water is water Lithium nitride reacts with water to produce ammonia and li

heavy water is water Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the equation. Li_3N(s) + 3H_2O(l) rightarrow NH_3(g) + 3LiOH(aq) Heavy…

hee Name Parmer h 1 Generating HydrogGastroo poine Date Section Data Tables (Rec

hee Name Parmer h 1 Generating HydrogGastroo poine Date Section Data Tables (Record data from all of the groups in your Lab Section) 110 points) Group Number Atmospheric Pressure …

heeeeeeeelp please Look at the periodic table. List three metallic elements and

heeeeeeeelp please Look at the periodic table. List three metallic elements and three nonmetallic elements. Write both the symbol and name, such as "Re, rhenium" Name an example o…

heeeeeeelp Remember to show your work and box final answers Aluminum foil is alm

heeeeeeelp Remember to show your work and box final answers Aluminum foil is almost 100% aluminum. Say a box of foil contains a roll 23.1 meters long and 29.7 cm wide. 1 he foil i…

heeelp The solubility of carbon in a-Fe (bcc) is limited to no more than 0.1 wt%

heeelp The solubility of carbon in a-Fe (bcc) is limited to no more than 0.1 wt% C. Below the solubility limit, what sites do the C atoms occupy in the Fe crystal lattice? [one an…

heeelp please * clear answer please :) Most real-world ceramics and metals are p

heeelp please * clear answer please :) Most real-world ceramics and metals are polycrystalline rather than monocrystalline. Briefly explain the difference using what you have lear…

heelp Consider the following two solidification processes for molten silica (SiO

heelp Consider the following two solidification processes for molten silica (SiO2). A liquid sample of SiO2 is cooled slowly to room temperature, forming a crystalline solid. A li…

hellllppp!!! please!!!!! DMSO /H20 N-Br N-H HO3PO N CO2 HNCO ?? Pyridoxyl phosph

hellllppp!!! please!!!!! DMSO /H20 N-Br N-H HO3PO N CO2 HNCO ?? Pyridoxyl phosphate Step in the oxidation of alanine to pyruvate a - Electrophilic addition b-E2 Elimination c-SN1 …

helllp 1) three liquids A,B,C have vapor pressures of 76 mmhg , 132 mmhg and 55

helllp 1) three liquids A,B,C have vapor pressures of 76 mmhg , 132 mmhg and 55 mmHg , respectively at 25 C . what is would be the vapor pressure of a solution made by combinig 0.…

hello 2) If the exponents a, b, and c have the values: a = 1; b = 0; c = 2 exper

hello 2) If the exponents a, b, and c have the values: a = 1; b = 0; c = 2 experimental value for exponent C is 1.92 CALCULATE: Rate constant k for data in 1A...______________ (b)…

hello I will put the question the I will put the function mentioned in the quest

hello I will put the question the I will put the function mentioned in the question the question : Euler`s method is simply a rst order Taylor series expansion f(xi+1) = f(xi) + f…

hello all, so my exam is tomorrow morning and I have a couple last minute questi

hello all, so my exam is tomorrow morning and I have a couple last minute questions regarding acid/base equilibrium! My study guide has 3 questions with answers to them, but I jus…

hello can someone please solve these 3 and create another example of each for me

hello can someone please solve these 3 and create another example of each for me I would really appreciate it I have an exam in two days ven belovw In the last section, there are …

hello can someone please solve these 3 and create another example of each for me

hello can someone please solve these 3 and create another example of each for me I would really appreciate it I have an exam in two days ven belovw In the last section, there are …

hello everybody, i have a home work on the LC-3 assemply language, it is asking

hello everybody, i have a home work on the LC-3 assemply language, it is asking me to write a subroutine and i need helo on it. it is: write an LC-3 assembly language subroutine, …

hello friends I need help with chemistry Using half-integer coefficients Many ch

hello friends I need help with chemistry Using half-integer coefficients Many chemical equations can be balanced by simply balancing the number of each type of atom in the reactan…

hello guy, can you help me find the concentration of [A] given these absorbance

hello guy, can you help me find the concentration of [A] given these absorbance values and initial concentration 4. Prepare a table (No.1) as follows: 6.0 6.5 7.0 7.5 8.0 9.0 NA T…

hello i have a problem doing a homework question on LC3 assembly languge. the qu

hello i have a problem doing a homework question on LC3 assembly languge. the question says: write a program to add 2-digit decimal numbers, read from the consle. i really have no…

hello i have a question about my buffer an pH LAB SO i am suppose to find the in

hello i have a question about my buffer an pH LAB SO i am suppose to find the inital moles and ratio. pH .20M HC2H3O2 2.97 used 25mL of it and diluted with DI water 50mL .20M NaC2…

hello i have a question about my buffer an pH LAB SO i am suppose to find the in

hello i have a question about my buffer an pH LAB SO i am suppose to find the inital moles and acetate acd ratio using ice pH .20M HC2H3O2 2.97 used 25mL of it and diluted with DI…

hello please i want the asnwer with steps as soon as possible thank you 4- Given

hello please i want the asnwer with steps as soon as possible thank you 4- Given the following balanced reagent equations, derive the net equation for each (a) Znes) + Cu(NO3½(aq)…

hello please i want the asnwer with steps as soon as possible thank you 5. Calcu

hello please i want the asnwer with steps as soon as possible thank you 5. Calculate the weight of (NHa) P04 needed to prepare 2000 ml of a 1.50 M solution: 6- Two sucrose solutio…

hello please i want the asnwer with steps as soon as possible thank you Reaction

hello please i want the asnwer with steps as soon as possible thank you Reactions in Aqueous Solutions Electrolytes 1- By using the table of solubilities of ionic compounds in wat…

hello please i want the asnwer with steps as soon as possible thank you The reac

hello please i want the asnwer with steps as soon as possible thank you The reaction 2NaOH(aq) + H2SO4(aq) Na2SO4(aq) + 2H2O() was studied in a coffee cup calorimeter. 100.0 mL po…

hello programmers! i have a homework on java that i really need help with. it is

hello programmers! i have a homework on java that i really need help with. it is add/sub two 8-bit singed binary numbers. if anybody can help that would be great. thank you in adv…

hello there.. i really need help through this assighnment. (Create a new file on

hello there.. i really need help through this assighnment. (Create a new file on your Neocities page called whilePractice.html Create a new button for each of the following proble…

hello, I am struggling with naming this molecule Course Contents ..» Graded Home

hello, I am struggling with naming this molecule Course Contents ..» Graded Homework Toolbox 2 » Orgo II - Problem 4 Cl Give the IUPAC name for this alkane. Find the longest carbo…

hello, I have following maze game which needs to have extra levels, have basic o

hello, I have following maze game which needs to have extra levels, have basic one level but need help making levels 2 & 3 with little bit added difficulty? please see code at…

hello, I have following maze game which needs to have extra levels, i have a bas

hello, I have following maze game which needs to have extra levels, i have a basic one level but need help making level 2 with little bit added difficulty? it needs, implementing …

hello, I ran out of time in lab yesterday and I did not get tofinish my last lab

hello, I ran out of time in lab yesterday and I did not get tofinish my last lab for this week. The question we're supposeto answer is do all metals behave the same way in a chemi…

hello, so I did this experiment. Could you please help me label this chemical in

hello, so I did this experiment. Could you please help me label this chemical in name, chemical formula, molecular weight, storage condition. thanks. 5.2.Prepare 200 mL of o.1 M s…

hello, so I did this experiment. Could you please help me label this chemical in

hello, so I did this experiment. Could you please help me label this chemical in name, chemical formula, molecular weight, storage condition. thanks. 5.2.Prepare 200 mL of o.1 M s…

help 2.) PICK ONE target. You can get there however you choose; you will not be

help 2.) PICK ONE target. You can get there however you choose; you will not be penalized for lengthy syntheses, but every step you propose should lead to the indicated product as…

help 27h How many sulfur dioxide nolecules are there in 1 80 mol of sult A) 1 08

help 27h How many sulfur dioxide nolecules are there in 1 80 mol of sult A) 1 08 1023 B)6.02 1024 C) L.0s 1034 D) 1.80 1024 E) 6.021023 28) Barium reacts with a polysiomic ion so …