Chemistry concepts and calculations

part 2 Advance Study Assignment: Determination of the Hardness of Water 1. A 0.3

part 2 Advance Study Assignment: Determination of the Hardness of Water 1. A 0.3946 g sample of CaCO, is dissolved in 12 M HCI and the resulting solution is diluted to 250.0 ml. i…

part 3: mol 02 remaining part4: Co mole fraction A mixture of 0.159 moles of C i

part 3: mol 02 remaining part4: Co mole fraction A mixture of 0.159 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0 L vessel at 500.0 K, producing a mixture of CO a…

part A . Pyridine is a weak base that is used in the manufacture of pesticides a

part A. Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: …

part A : As a technician in a large pharmaceutical research firm, you need to pr

part A : As a technician in a large pharmaceutical research firm, you need to produce 400. mL of a potassium dihydrogen phosphate buffer solution of pH = 6.76. The pKa of H2PO4 is…

part A A sweet beverage drink contains sugar labeled as having 95 Calories (95kc

part A A sweet beverage drink contains sugar labeled as having 95 Calories (95kcal) of energy. how many kilojoules are there in 95.0 Calories? part B If all of this energy (95 Cal…

part A A. Effect of lowering the pH on the solubility of an insoluble salt. 1. O

part A A. Effect of lowering the pH on the solubility of an insoluble salt. 1. Obtain 5.0 mL each of 1.0 M calcium chloride and 0.25 M sodium oxalate solutions 2. Pour both soluti…

part A Cd( s )+Sn2+( a q )Cd2+( a q )+Sn( s ) Write the anode half-reaction. Exp

part A Cd(s)+Sn2+(aq)Cd2+(aq)+Sn(s) Write the anode half-reaction. Express your answer as a ionic equation. Identify all of the phases in your answer. Part B Cd(s)+Sn2+(aq)Cd2+(aq…

part A The normal boiling point of water, H2O is 100.00 °C and its Kbp value is

part A The normal boiling point of water, H2O is 100.00 °C and its Kbp value is 0.512 °C/m. Assuming complete dissociation of the electrolyte, if 11.22 grams of sodium nitrate (Na…

part A Urea (NH2CONH2), an important nitrogen fertilizer, is produced industrial

part A Urea (NH2CONH2), an important nitrogen fertilizer, is produced industrially by the following reaction: 2NH3(g)+CO2(g)NH2CONH2(aq)+H2O(l) Given that G = 13.6 kJ/mol, calcula…

part A and B a.com/Common/TakeTutorialAssignment.aspx Student: jorge.sosa@mavs.u

part A and B a.com/Common/TakeTutorialAssignment.aspx Student: jorge.sosa@mavs.utaedu My Account Log Out HW 5: Circular motion Begin Date: 3/4/20181 0 PM End Date: 3/24/2018 11:59…

part A and b calculate the box length, using the particle in th ebox modle for h

part A and b calculate the box length, using the particle in th ebox modle for hexatriene Calculate the box length, using the particle in the box model for hexatriene, C_6 H_8, as…

part A k=AeEa/RT where k is the rate constant, A is the frequency factor, Ea is

part A k=AeEa/RT where k is the rate constant, A is the frequency factor, Ea is the activation energy, R=8.314 J/(molK) is the universal gas constant, and T is the absolute temper…

part A k=AeEa/RT where k is the rate constant, A is the frequency factor, Ea is

part A k=AeEa/RT where k is the rate constant, A is the frequency factor, Ea is the activation energy, R=8.314 J/(molK) is the universal gas constant, and T is the absolute temper…

part A the answer is 6.5 but how do youCalculate the number of moles of all reac

part A the answer is 6.5 but how do youCalculate the number of moles of all reactants and products in an equilibrium mixture prepared by mixing 1.00 of acetic acid and 10.00 of et…

part A) if Kb for NX3 is 2.0x10^-6 what is the pOH of a 0.175 M aqueous solution

part A) if Kb for NX3 is 2.0x10^-6 what is the pOH of a 0.175 M aqueous solution of NX3? part B) if Kb for NX3 is 2.0x10^-6 what percent ionization of a 0.325M aqueous solution of…

part A)Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unkno

part A)Three gases (8.00 g of methane, CH4, 18.0 g of ethane, C2H6, and an unknown amount of propane, C3H8) were added to the same 10.0-L container. At 23.0 C, the total pressure …

part A, B, C were answered in this link , part D left http://www.chegg.com/homew

part A, B, C were answered in this link , part D left http://www.chegg.com/homework-help/questions-and-answers/question-linke-answered-http-wwwcheggcom-homework-help-questions-ans…

part A. a volume of 90.0mL of aqueous potassium hydroxide (KOH) was titrated aga

part A. a volume of 90.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution od sulfuric acid (H2SO4). What was the molarity of the (KOH) solution if 2…

part A:determine the average concentration moles per liter of Ca2 ions present i

part A:determine the average concentration moles per liter of Ca2 ions present in your water. (my average edta used was 1.48ml) trail 1 1.5ml edta used trail 2 1.4ml edta use trai…

part B snd C emic Analysis DATA Trial 4 Massaf Basso, and paper, Mass of paper.

part B snd C emic Analysis DATA Trial 4 Massaf Basso, and paper, Mass of paper. 676 Muse of Baso, precipitate, issoles of Hasoo that reaowed volume of neal solution reactod,mL sml…

part C only A2-hour carburizing (i.e. adding carbon) heat treatment of a steel s

part C only A2-hour carburizing (i.e. adding carbon) heat treatment of a steel sample at 250 degree C will raise the carbon concentration to 0.40 wt% (weight %) at a depth of 4.0 …

part C only A2-hour carburizing (i.e. adding carbon) heat treatment of a steel s

part C only A2-hour carburizing (i.e. adding carbon) heat treatment of a steel sample at 250 degree C will raise the carbon concentration to 0.40 wt% (weight %) at a depth of 4.0 …

part a CO(g)+Cl2(g)=COCl2(g) Carbon monoxide and chlorine gas are allowed to rea

part a CO(g)+Cl2(g)=COCl2(g) Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 469C . At equilibrium, the concentrations were measured and the following …

part a In the following reaction indicate which is the Lewis acid: SO2+H2O?H2SO3

part a In the following reaction indicate which is the Lewis acid: SO2+H2O?H2SO3 Express your answer as a chemical formula. part b In the following reaction indicate which is the …

part a Some salts are basic, meaning that when those salts are dissolved in wate

part a Some salts are basic, meaning that when those salts are dissolved in water, the anion further reacts with water to form a basic solution. A very important example of this i…

part a The reaction of nitrogen and hydrogen to produce ammonia: N2(g) + 3H2(g)

part a The reaction of nitrogen and hydrogen to produce ammonia: N2(g) + 3H2(g) 2NH3(g) has an equilibrium constant Kc= 1.2 at 375 °C. If the starting concentrations are [H2] = 0.…

part a a reaction rate can be measured relative to either the rate of reactant l

part a a reaction rate can be measured relative to either the rate of reactant loss or the rate of product increase. Depending on which species concentration is followed, the poss…

part a part b part c part d A catalyst is a substance which increases the rate o

part a part b part c part d A catalyst is a substance which increases the rate of a reaction. The most common first description is that a catalyst lowers the activation energy of …

part a part b part c part d If is very simple to determine how much the boiling

part a part b part c part d If is very simple to determine how much the boiling point will increase or the freezing point will decrease for any solvent, if the number of particles…

part a part b part c part d Model Other Measurements of Solutes in Solutions Alt

part a part b part c part d Model Other Measurements of Solutes in Solutions Although there are many other units used to measure the amount of a solute in a solution, two of those…

part a the reaction COCl2(g)CO(g)+Cl2(g) has an equilibrium constant Kc=2.19

part a the reaction COCl2(g)<-->CO(g)+Cl2(g) has an equilibrium constant Kc=2.19*10^-10 at 100 degree celcius. is the following mixture at equilibrium, and if not, which dir…

part a was marked incorrect, i dont know what i did wrong. please outline explan

part a was marked incorrect, i dont know what i did wrong. please outline explanation strp by step. 4. A student purified a 500-mg sample of phthalic acid by recrystallization fro…

part a was marked incorrect, i dont know what i did wrong. please outline explan

part a was marked incorrect, i dont know what i did wrong. please outline explanation strp by step. 4. A student purified a 500-mg sample of phthalic acid by recrystallization fro…

part a) If 41.2 L of N 2 at 32.8°C and 735 torr is heated to 119°C and compresse

part a) If 41.2 L of N2 at 32.8°C and 735 torr is heated to 119°C and compressed to 2.91 L, what is the new pressure in torr? Enter your answer in scientific notation. _____ × 10 …

part a,b,c,d and e Exercise 7.26 Part A Constants A 75-kg roofer climbs a vertic

part a,b,c,d and e Exercise 7.26 Part A Constants A 75-kg roofer climbs a vertical 7.0-m ladder to the flat roof of a house He then walks 12 m on the roof, climbs down another ver…

part a,b,c,d,e, and f Exercise 6.7 Constants Part A Two blocks are connected by

part a,b,c,d,e, and f Exercise 6.7 Constants Part A Two blocks are connected by a very light string passing over a massless and frictionless pulley (the figure (Figure 1) Travelin…

part a. Based on the model Solute and Solvent , for the following common solutio

part a. Based on the model Solute and Solvent, for the following common solutions identify the solvents in the following mixtures: 1. soda 2. vinegar 3. vodka 4. sea water 5. rubb…

part a. You are using a Geiger counter to measure the activity of a radioactive

part a. You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. …

part a.) A mixture of neon and xenon gases is maintained in a 9.44 L flask at a

part a.) A mixture of neon and xenon gases is maintained in a 9.44 L flask at a pressure of 3.71 atm and a temperature of 39 °C. If the gas mixture contains 10.5 grams of neon, th…

part a.) A student needs 155 mL of 2.9M HCl solution for an experiment. What vol

part a.) A student needs 155 mL of 2.9M HCl solution for an experiment. What volume (in mL) of 10M HCl would need to be diluted to make the desired solution? part b.) Calcium carb…

part a: Colligative properties are only incidentally affected by chemical proper

part a: Colligative properties are only incidentally affected by chemical properties of substances. The most important point is that colligative properties are dependent on the nu…

part a: Iodine, I 2 , reacts with aqueous thiosulfate ion in neutral solution ac

part a: Iodine, I2, reacts with aqueous thiosulfate ion in neutral solution according to the balanced equation I2(aq)+2S2O2?3(aq)?S4O2?6(aq)+2I?(aq). How many grams of I2 are pres…

part b and c please. how do i solve these ID-88069042 ± Solution Dilution what i

part b and c please. how do i solve these ID-88069042 ± Solution Dilution what is the final volume in mililiters when a 646 L of a 42 0 % (mh) solution is diluted to 21 8 % (mi)? …

part b part c One common problem for many students is not looking at data carefu

part b part c One common problem for many students is not looking at data carefully before trying to force it into an equation. This is very common with kinetics data since there …

part c and d A sprinter set a high school record in track and field, running 200

part c and d A sprinter set a high school record in track and field, running 200.0 m in 20.9 s What is the average speed of the sprinter in kilometers per hour? Express your answe…

part e here applicable, you MUST show ALL work for full credit!!! You have a 30

part e here applicable, you MUST show ALL work for full credit!!! You have a 30 mL sample of 0.10 M acetic acid (K, 1.76 X 103) that you are going to titrate using 0.15 M KOH a. D…

part2.py Read in a list of numbers entered by the user. The user will enter inte

part2.py Read in a list of numbers entered by the user. The user will enter integers, and when they are done they will type "end". You should print out the length of the longest s…

partb a)A 50.0-mL volume of 0.15 M HBr is titrated with 0.25 M KOH. Calculate th

partb a)A 50.0-mL volume of 0.15 M HBr is titrated with 0.25 M KOH. Calculate the pH after the addition of 13.0 mL of KOH. Express your answer numerically. Part b) A 75.0-mL volum…

partial fraction partial fraction partial fraction Tonic and Covlent Name Dat Se

partial fraction partial fraction partial fraction Tonic and Covlent Name Dat Section OBSERVATIONS AND DATA 1. Electrolytes and Nonelectrolytes A. Record the conductivity measurem…

pate: Lab Section Name Partner\'s name 1. Use your and data table to co the volu

pate: Lab Section Name Partner's name 1. Use your and data table to co the volume ofNaoHtitrant you recorded before and after the large increase in the addition of 0.5 mL ofNaoH s…