Code for Unknown Hydrate Molar Mass of Unknown Anhydride Weight of Hydrate and Evaporating Dish Weight of Empty Evaporating Dish Weight of Hydrate TOJAW Weight of Sample and Evaporating Dish after 1st Heating Weight of Sample and Evaporating Dish after 2nd Heating Weight of Sample and Evaporating Dish after 3rd Heating* 16 162. 52 10. 58 58 55
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- In part A.3. as the sample cools, moisture from the atmosphere condenses on the outside of the evaporating dish, before the mass is measured. The presence of the condensed moisture will the reported TDS in the water sample. O leave unchanged decrease double O half O increaseA 1.59 g sample containing KI was analyzed gravimetrically and 0.0538g of Barium Iodate was recovered... express the results of this analysis as percent posassium iodide.Q3 Draw the phase diagram for metals (A. B) with melting points (1180°C, 1455°C respectively). They are completely soluble in cach other in solid stale. Follow up the cooling of alloy with 60% B: 1- Find the melting range of alloy with 20%A (start of solidification, end of solidification). 2- 2- Find the Percent, chemicals composition of liquid and solid at 1300°C for alloy with 60%B 3- Draw the microstructure for alloy 30% B at room temperature.
- Calulate the foncentration of patassiut grams pertitter after miXing(oomt)ofCo-250M) ket and (z00mnttof fortoo MKISO fon-in=.01002 mo B. PREPARE 20 mL of ~ 1M Cacla. 50ml using a balance, weigh out the calculated mass of CoCl₂ 21₂0 M = 2.00×10-4 Into a tared 150ml beaker. Record actual mass of Salt used. Calculated actual masses should agree to + 1.0g of better. Use a graduated cylinder to add 20.0ml of DI water to Flask. Stir Solution w/ stirring rod or a stir bar & Stil plate until the salt is fully dissolved. A better description of the concentration of a solution prepared in this manner is weight percent (wt%.) units, calculated as (g solute/g solution) x 100%, where g solution -g solute + g solvent Calculate report wt% of Ca²t of this solution, water density being 1.0 g/ml 24 Approximate mass of Calla-2H-0 Actual mass of Ca Cl₂ 2H₂0 weighed Wt7. Cata calculation 2.94 2.9470g Chemistry 88, No. 3 (2016) average mass per atom or wSubstance Density Volume in Weight in In g/mL mL Number Melting pt in °C Mol. Wt. of moles Magnesium Bromobenzene Methyl benzoate Triphenylmethanol (expected) | (expected) Dronnduro
- a hydrated CuSO4 salt was heated and thus dehydrated. Determine the % H2O by weight in the hydrated CuSO4 salt. SHOW WORK TO RECEIVE FULL CREDIT mass of empty dish 43.571 gmass of dish + hydrated salt 44.326 gmass of dish + dehydrated salt 44.054 g 4. Using the data found in question number 3, determine the empirical formula for the hydrated CuSO4salt. What is the chemical name of this dehydrated salt? 5. Suppose that after your second heating, you were impatient and did not wait until your porcelain evaporating dish to cool. Instead, you weighed it while it was still hot. How would this specifically affect the calculated percentage of water in the compound?°F rtly cloudy m/alekscgi/x/Isl.exe/1o_u-lgNslkr7j8P3jH-lvWyv8WYLP6W0cqJcWJdIACROQwyw24GWHInMM72ts 1 NTBcSzwZOGGhrmIP4yCejeRhX9HIzqlzRTj2iaDBXTCRIHYWNO_-o?10... O CHEMICAL REACTIONS Calculating molarity using solute moles A chemist prepares a solution of mercury(II) iodide (HgI₂) by measuring out 0.0161 μmol of mercury(II) iodide into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in μmol/L of the chemist's mercury(II) iodide solution. Round your answer to 3 significant digits. µ mol L Explanation Check x10 X Ś Q Search 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use **************** D 1/5 www Jessi Privacy Center | AccessibilityComponent B is separated by dissolution in water, followed by filtration. the filtrate is collected in a beaker weighting 96.47g . After evaporation of the water from the filtrate , the beaker and solid residue weight 97.25g. What is the weight of of component B ? Calculate the weight percent of component B in the original mixture.
- BKARBZNJQ%252BrzGkQbk4B8Z22DHVNLWGT92Unrv1Vgd40x21Q4 Login Image result for uni. Image result for uni. 5 FLMS 6t Balance this equation... H2 + Cl2 --> HCI It is balanced H2 + Cl2 --> Hhelp solvinf for the %T, and both diluted and actual PO4s Beer's Law Piot Information Linear Regression Equation |y=664x+0.13 R- value 0.9938 Molar Absorbtivity(M'em') [0 13 Soft Drink Phosphate Data( need to to do all unknowns) diluted [PO4 Soft Drink Unk. Vol. of Soft Dilution actual (PO4] %T Absorbance Drink(mL) Factor (µM) 1 0.50 0.362 2 0.50 0.330 15 3 0.50 0.337 5Analysis of product: Calculate the percent recovery based on the amount of tea originally used and a final mass of 0.20g of caffeine obtained. Compare this value against a literature search about the approximate caffeine content by percent in black tea. Given: the observed melting point of the product crystals is 230oC-235oC -10 tea bags (black tea, contains ~45mg caffeine/bag) -total mass is 21.10g of the loose black tea