GMontenaro M5 Lab 1 Dehydration of a Hydrate 2022

4. Geologist also use binary phase diagram to show compositional change with temperature. These diagrams are described on pages 249-256 of MMS, and in your chemistry books. For the initial composition shown by an X, determine the original composition of the olivine (core) and the final composition of the solid - the rim. Use Fo/Fa percentages. Olivine Binary Phase Diagram Temperature "C 1990 1800 1600 1400 1200- 0 М035904 Fo Olivine 20 X Liquid 40 60 Weight % Fa 41205 100 Fe Fa Substances with >1 component melt over a range of temperatures core rim 3

> EL session.masteringchemistry.com MasteringChemistry ROSTER-2019-SPRI-PULLM-CHEM-101 blackboard wsu Google Search MasteringChemistry: HW 8 KHW 8 Applications for Dilution Calculations K8 of8 Dilution as a procedure in analysis We sometimes purposely dilute solutions if the analyte concentrations wavelengths in the visible (and sometimes uitraviolet) range. Based on the dissolved solute's properties, we can quantify that solute's concentration are too high to permit an accurate measurement. For example, a spectrophotometer can measure the amount of light that passes through a sample solution for If the solute's concentration is too high, a relatively small amount of incident light having the wavelength that corresponds to the solute's absorption behavior will less light is absorbed, and the detector in the spectrophotometer can generate more reliable data. reach the dete ctor, which results in an inaccurate measurement (consider the result if you blocked the light with an opaque…

The scatter plot below shows the density of ethylene glycol solutions vs. the mass % of those solutions. Density (g/mL) 1.04+ 1.03- 1.02- 1.01 0.99- 0.98- 8 % 10 12 14 16 18 20 Mass % Q The equation for the line of best fit shown on the scatter plot is y= 0.001683 +0.9959. Use the equation of the trendline to determine the mass percent of an ethylene glycol solution with a density of 1.015 g/mL.

18. Jet is an undergraduate chemistry student, he’s out in the laboratory trying to determine the volatile organic compounds as well as overall protein content of the leaf and stem of a malunggay (Moringa oleifera). He subjected the leaf and stem in a separate digestion reaction (treatment of sulfuric acid), afterwards he subjected the products to high temperature induction to get a dry ash like substance. Which type/s of chemical analysis did Jet employ to reach his objective?I. Qualitative AnalysisII. Quantitative Analysis III. Instrumental Chemical AnalysisIV. Wet Chemical AnalysisA. II & IV onlyB. I & IV onlyC. I, II & IV onlyD. I, II, III, IV

Co 5 .. Aktiv Chemistry Welcome to MyTCC X b Home | bartleby 403 Forbidden: Ac... 1 + Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. CoCl₂(aq) + K₂S(aq) ( 2 □ CI Reset Cu F5 000 3- T 3 F6 4 0²-0 X QYour Sets | Quizlet P Question 46 of 50 03 04 05 06 07 08 C F7 5 6 7 8 9 Co - 2+ 3+ 4 4+ ASUS FB K NR 8 X ** H₂O F9 9 F10 Ac (1) (g) (aq) S 0 Sign In or Sign Up | Chegg.cc X Do Delete 8 O Prt. Sc + W 4

An open tubular column with a diameter of 215 um and a stationary phase thickness on the inner wall of 0.51 um passes unretained solute through in 79 s. A particular solute has a retetion time of 467 s. What is the distribution constant for this solute? Kp = What fraction of time does this solute spend in the stationary phase? ts !! ttotal

Preview File Edit View Go Tools Window Help 21,743 FEB 22 h (page 1 of 2) 2. Use the figure shown below for an ideal solution to answer the following questions. Percent Composition A 60% 40% 100% 140 120 100 W 80 60 40 20 0 0% 80% 20% Vapor Liquid 15 60% 40% Percent Composition B 20% 80% a. What two requirements must be met in order for a solution to be considered "ideal"? b. What is the molar composition of the vapor in equilibrium with a boiling liquid that has a composition of 40% A and 60% B? c. A sample of vapor has the composition of 30 % A and 70 % B. What is the composition of the boiling liquid that produced this vapor? 100% 0% d. What is the boiling point of a liquid having a molar composition of 80% A and 20% B? MA Zims wwwww m PG 60% f Wed 5:24 PM == Highlight Rotate Markup Search... VIP

You are analyzing the effluent from a lotion plant for parabens using HPLC. You have a working standard solution with a concentration of 59.4 ppm which returned a Peak Height of 10,164 and Peak Area of 5,315. You take 44.4 L of the water sample and concentrate it to 0.3 L and analyze this solution. The Peak Height is 9,119 and the Peak Area is 6,320. What is the concentration of parabens in the effluent of the plant in mg/L to two decimal places.

Pls do fast within 5 minutes and i will give like for sure Solution must be in typed form To plan a liquid–liquid extraction we need to know the solute’s distribution ratio between the two phases. One approach is to carry out the extraction on a solution that contains a known amount of solute. After the extraction, we isolate the organic phase and allow it to evaporate, leaving behind the solute. In one such experiment, 1.235 g of a solute with a molar mass of 117.3 g/mol is dissolved in 10.00 mL of water. After extracting with 5.00 mL of toluene, 0.889 g of the solute is recovered in the organic phase. If we extract 20.00 mL of an aqueous solution that contains the solute using 10.00 mL of toluene, what is the extraction efficiency?

Using the Mg-Pb phase diagram below, if you start at point A andcool down very slowly to room temperature (point D), sketch the microstructure associated with each letter, determine what phases are present at each letter, determine the compositions for each phase, and determine the weight in each phase. The Mg-Pb mixture has 20 wt. % Pb in it. You start with 100 kg. A. 700ºC  B. 600ºC C. 400ºC D. 25ºC

a. Colloidal particles typically have a negative surface charge that attracts oppositely charged positive ions in the surrounding bulk solution. These so-called _______-ions are held at the particle surface through electrostatic and van der Waals forces of attraction strongly enough to overcome thermal agitation. b. Turbine and propeller type mechanical mixers used for rapid mixing of reagent chemicals have either ------------- flow impellers with flat or curved blades located parallel to the axis of the drive shaft, or --------------------- flow impellers with blades making an angle of less than 90o with the drive shaf

) - O + 88 www-awu.aleks.com Dashboard Rhetorical Analysis Essay Assignment WPAL 101_ 229 _Spring 2022 _ Smith -... ALEKS - Anniston Stovall - Learn Answered: Sodium hydrogen carbonate (.. O CHEMICAL REACTIONS Anniston V Solving for a reactant in solution 1/5 One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 200. mL sample of groundwater known to be contaminated with iron(II) chloride, which would react with silver nitrate solution like this: FeCl,(aq) + 2 AgNO3(aq) → 2 AgCl(5) + Fe(NO3),(aq) 2 The chemist adds 11.0 mM silver nitrate solution to the sample until silver chloride stops forming. She then washes, dries, and weighs the precipitate. She finds she has collected 8.9 mg of silver chloride. ol. Calculate the concentration of…

NCHE X b AnsweX Oefeni X Oefeni X Oefeni X Oefeni x Oefeni X 2021 F X Oefeni X Micros X + docs.google.com/forms/d/e/1 FAlpQLSfSGcE8gf218c6JoHMWME1A8Nydf8M4g1yG93D-2LPpoMj_g/formResponse Question 9: Suppose that the alkene in Figure 9 reacts with 1 mole of hydrogen chloride. Predict the structure of the main product of the reaction. [Generate a SMILES notation: https://jsme-editor.github.io/dist/JSME test.html. Copy the notation (CTRL+C) and paste it as the answer to this question (CTRL+V).] * Jou antwoord Figure 9 Show all -11. jpg 10:07 28°C Sunny ^ 2021/11/19 自 な ere to search hp

Chrome File Edit View History Bookmarks People Tab Window Help 99% 1 Fri 2:43 PM 1 Q OChemistry-S2- MI, T2- Activ x A lincolnlearningsolutions.Ims.lincolnlearningsolutions.org/student/158064923/activity/71945701 FF14945E-E5A8-AA5C-E4B3-DE63-DA2. Paused Update ABP CSF # Apps YouTube G Google @ school wR Word Reference 6 3 X school myflixer 国Reading Ideal Gas Law - Assess It Chemistry-S2-MI, T2/Gases/Lesson 146 -147 Tina Etemi 回 04 @ All changes sav 3. If you have 3 moles of a gas at a pressure of 2.5 atmospheres and a volume of 8 liters, what is the temperature? Pay attention to the unit of pressure used. O 0.81 K O 25 K O 81.27 K O 57.86 K

The following data were collected for the reaction 2A + 2B + C 3G+ 4 F Experiment 2 3 4 5 [A] Units of Molarity .00125 .00250 .00125 .00125 .00301 [B] Units of Molarity 00125 .00125 00302 00302 .00100 [C] Units of Molarity 00125 .00125 .00125 00375 .00115 Rate Units M/s 00870 .0174 .0508 .457 a. What is the order with respect to each reactant and what is the overall order for the reaction? Answer this question within the answer box and show your work clearly labeled on the scratch paper. b. Write the rate law for the reaction. Answer this question within the answer box and show your work clearly labeled on the scratch paper. c. What is the value and units for k? Answer this question within the answer box and show your work clearly labeled on the scratch paper. d. Predict the rate for experiment 5, you should give a value and units. Answer this question in the answer box and show your work on the scratch paper labeled clearly.

02:21 4G File Details 4CH003/UM1: Fundamentals of... Place a thermometer into the mixture and cool the flask in a water bath until the temperature is below 200C. Remove the flask from the water bath and carefully add cyclohexanol (10ml, 9.6g) to the acid mixture. Cyclohexanol is only slightly soluble in water so you should observe two immiscible layers at this point. Dissolve sodium dichromate dihydrate (10.5g) in water (5ml) in a 25ml conical flask and, using a dropping pipette, add this solution carefully drop by drop to the cyclohexanol/sulphuric acid mixture over about 30-40minutes. Swirl the flask vigorously during the addition process and maintain the temperature of the mixture in the round bottomed flask between 25-35°C during the addition by immersion of the flask in the cold water bath. If the dichromate solution is not added slowly, a rapid rise in temperature will occur and the reaction will become violent. 3 When all the dichromate solution has been carefully added rinse…

Using the percent purity calculations, determine the percent yield of synthesis of aspirin.    Part I  Synthesis of Aspirin Mass of salicylic acid used (g)  2.029g Volume of acetic anhydride used (mL)  5ml Mass of acetic anhydride used (vol. × 1.08 g/mL)  5.4g Mass of aspirin synthesized (g)  3.256g Part II  Melting Temperature Data Melting temperature (°C)  133°C Part III  Salicylic Acid Standard Stock Solution Initial mass of salicylic acid (g)  0.210g Moles of salicylic acid (mol)  0.0147 mol Initial molarity of salicylic acid (M)  0.724 M Part III  Beer’s Law Data for Salicylic Acid Standard Solutions Trial Concentration (M) Absorbance Water (mL) 1  10  0.301 0 2  7.5 0.219 2.5 3  5.0 0.163  5.0 4  2.5 0.074  7.5   Best-fit line equation for the salicylic acid standards   Test of the Purity of the Synthesized Aspirin Initial mass of aliquot of product (g)…

* Chrome File Edit View History Bookmarks People Tab Window Help A1 07 99% 1 Fri 2:44 PM a Chemistry - S2 - MI, T2 - Activ x lincolnlearningsolutions.Ims.lincolnlearningsolutions.org/student/158064923/activity/71945701_FF14945E-E5A8-AA5C-E4B3-DE63-DA2... ☆O Updat ABP C5F Paused E Apps O YouTube G Google @ school wR Word Reference 6 X school myflixer EReadin Ideal Gas Law-Assess It Chemistry-S2-MI, T2/Gases//Lesson 146-147 Tina Etemi 回 O 4 All changes sava 5. A balloon can hold 10 liters of a gas. If you blow up this balloon with 2 moles of oxygen gas at a pressure of 0.76 atmospheres, what is the temperature of the balloon? Pay attention t the unit of pressure used. O 45.7 K O 0.457 K O 4.63 K O 46.3 K PREVIOUS 5 of 5 SAVE & EXIT SUBMIT ALL ANSWERS

The following data were obtained when a hydrate was heated 31.781 g crucible+ sample 30.501 g empty crucible 31.100 g crucible + sample after heating 1. Calculate the % water in the hydrate. SHOW WORK 2. Decide whether the sample was BaCl2 2H20 or MgCl2 6H2O by calculating the theoretical % water in each compound and comparing to your answer in #1. SHOW WORK 95.218 g/mole Formula weights: MgCl2 208.25 g/mole ВаCl> НО C= 18.0153 g/mole 89 II 1

Are Particles Visible? Can it be Filtered? Do Partices Settie? See Tyndal Effect? Example Mixture Solution No saltwater Colloid No Suspension Yes Part 3 Separating Mixtures 15. Since the parts of a moture are combined, they can be separated rather easily. 16. F in the table below to sutmarize the 6 different separation techniques described. Technique Description Separates larger solids from smaller solids by passing them through mesh. Separates magnetic from non-magnetic materials Separates an insolluble solid from a liquid by passing it through a filter. Separates a soluble sold from a liquid by boling off the liquid. Separates a liquid from a soluble solid in solution by boiling and cooling it. Separates mitures of liquids with different boiling points using a condenser. Separates matures of liquids with afferent solubilities using absorbent paper. Part 4 Properties.of Matter 17. Matter can be described by 2 types of properties: and properties 18. A) s a property of matter one can…

Q3/ Caleulate the solubility parameter for amorphous polylactie acid, which has a density of 1.21g/cm3. Also, identify the best solvent for molecular weight determination. Explain your reasoning. Note that the density for acetone, ethyl acetate, and tetrahydrofuran are 0.791,0.902, and 0.889 g/cm3, repsectivily. Note H-1 g/mole, C-12 g/mole, N-14 g/mole, and 0-16 g/mole. CH3 -H polylactic acid (C3H402)n но Aceton:C3H60 ethyl acetate :C4H8O2 tetrahydrofuran :C4H80 人人 Group Molar Attraction Constant Fin (MPa) cm' mol -CH, 420 --CH, - 280 >CH- 140 >C< 0. P-phenylene 1377 -0- 256 -CO- 685 -COO 512

Two mixtures of methanol (CH3OH) and water (H2O) are contained in separate flasks. In the first mixture, methanol has a molar fraction of 40%, and in the second a molar fraction of 70%. Flask 1 and Flask 2 are combined in a mixer in a ratio of 2:1 (molar). a.Draw a diagram of the process and label the streams and components. b.ldentify all the unknown masses and mass fractions of the system. c.Calculate the composition (in mass) of Flask 1 and Flask 2. d.Calculate the composition (in mass) of the product out of the mixer. Please give an explanation for the step you take

Two salts A and B are dissolved in water. At the temperature of the experiment, the solubility of A is 1 kg A/kg pure water and that of B is 0.4 kg /kg water. It will be assumed that the solubilities of the two salts are not affected by the presence of each other. If originally 20 kg of A and 20 kg B are dissolved in 100 kg water, and some of the water is evaporated from solution, calculate the: (1) amount evaporated (2) weight of mother liquor (3) composition of mother liquor (4) weight of each crystal formed for the following cases: a) 50% of the water is evaporated b) Enough water is evaporated to reduce the total weight of the solution to 50% of the original value c) Enough water is evaporated to leave the solution saturated with A, without crystallizing any A d) Enough water is evaporated so that the remaining solution is 50% of the original value.

1. Part A Solution temperature = 24 °C Conductivity of instrument grade water = 1.043 uScm! Conductivity of deionised water = 1.74 µScm! Conductivity of tap water = 330 μScml On the basis of data above comment on conditions of the different water grades. 2. The experimental data for electrolytes in Part B are given below: Electrolyte c (M) K (ms.cm') HC1 0.01 5.06 KCI 0.01 1.415 NaCl 0.01 1.236 CaCl2 0.01 2.30 КОН 0.01 2.29 CH3OH 0.01 0.003 K2SO4 0.01 2.65 Calculate molar conductivity A of each electrolyte solution in Sm/mol above. Correct for the conductivity of deionized water.

physical chemistry Roughly, what is the error introduced by the solution of some of the CO2 in the water in the bomb? The solubility of CO2 is about 0.0015 g/mL at 25°C and 1 atm CO2 pressure. The heat of solution of CO2 in a dilute aqueous solution is roughly -19.4 kJ/mol. Assume that the final CO2 pressure is 2 atm and that Henry's Law applies.

Calculate the Constant Weight (in grams) of the Empty Crucibles. Show your solution. Crucible No. 1 2 3 Weighing 1 22.6035 22.0223 24.1535 Weighing 2 22.6017 22.0204 24.1533 Weighing 3 22.5994 22.0199 - Weighing 4 22.5992 - - Constant Weight, g ??? ??? ???

11. The following reaction between potassium, permanganate, and manganese sulfate in water produces maga- nese dioxide, potassium sulfate, and sulfuric acid. (₁) KMnO4 + (1₂)MnSO4 + (x3) H₂O → (14) MnO₂ + (15) K₂SO4 + (6) H₂SO4 Balance the equation using the vector approach and write the solution in vector parametric form.

The homogeneity of the chloride level in a water sample from a lake was tested by analyzing portions drawn from the top and from the bottom of the lake, with the following results in ppm CI: Тоp 26.30 26.43 26.28 26.19 Bottom 26.22 26.32 26.20 26.11 26.49 26.42 Determine if there is a significant difference (at 95% confidence level) between the chloride level in the top and bottom levels of the lake.

The Common App... An experiment was conducted using KNO3. The table below shows the data obtained after dissolving different masses of KNO3 in 10 ml of deionized water and then cooling to determine the temperature at which the different concentration of salts begin to recrystallize Concentration of KNO3 Saturation temperature(°C) 2g/10 ml 52.5 4g/10 ml 54.7 6g/10 ml 66.7 8g/10 ml 80.2 If a student dissolve 24g of KNO3 in 120 ml of deionized, at what temperature do you expect to see recrystallization O 52.5 degree celsius O 66.7 degree celsius 0:54.7degrce celsius O100.2 degree celsius