6. CONSTANT VOLUME CALORIMETRY Using a bomb calorimeter, 1.0 g of benzene (CeHs), a component of gasoline, was combusted to determine its energy content.2000 mL of water was used. a. Arrange the following steps of the CvC technique in chronological order. Connect the ignition wire to the sample using a cotton string. Cover the oxygen vessel bottom. Fill the calorimeter with 2000 mL of water.
Q: pls compute how to prepare the solutions 1. 100.0 mL 0.0500 M stock Ca2+ solution
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- Combustion of a fuel sample in a bomb calorimeter increases the temperature of the entire system by 5.10 °C if the calorimeter contains 1700 g of water, but only by 4.00 °C if the calorimeter contains 2200 g of water. What is the heat capacity of the dry bomb calorimeter assembly? Assume that the specific heat capacity of water is 4.18 J g–1 °C–1.My data is attached, please 1.) Create a scatter chart with all the data then **Using your graph - predict how many seconds it will take to dissolve an Alka-Seltzer® tablet in 200 mL of water at the following temperatures. Use the exponential trend line to find the function used in predicting the time. If needed, please refer to the Introduction to Graphing manual for guidance. 15°C, 35°C and 60°C6. Your pharmacy has on hand Robitussin CF Syrup (guaifenesin 100 mg/1 tsp).You receive a prescription for Robitussin CF Syrup and the patient is to receive 250 mg of guaifenesin q4h. How many milliliters will the patient receive in 1 dose? If you dispense a 4oz bottle of syrup, how many doses will the patient receive?
- A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is dissolved in 50 mL water and titrated to the Ag2CrO4 endpoint, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same endpoint. Report the % (w/w) KCl and NaBr in the sample. [Ans . 84.41 % (w /w); 17.59 % (w /w)]pls compute how to prepare the solutions1. 100.0 mL 0.0500 M stock Ca2+ solutiona. Weigh appropriate amount of pure CaCO3 (FW=100.09) to the nearest 0.1 mg into a 250 mL beaker. Add about 40.0 mL distilled water. Take note of the purity of CaCO3 used.b. Carefully and slowly add concentrated HCl to dissolve the CaCO3 solids while stirring and heating the solution in a hotplate. Do this until the CaCO3 solids are completely dissolved or until no more effervescence is observed.2. 100.0 mL 0.0500 M stock Ca2+ solutiona. Weigh appropriate amount of pure CaCO3 (FW=100.09) to the nearest 0.1 mg into a 250 mL beaker. Add about 40.0 mL distilled water. Take note of the purity of CaCO3 used.b. Carefully and slowly add concentrated HCl to dissolve the CaCO3 solids while stirring and heating the solution in a hotplate. Do this until the CaCO3 solids are completely dissolved or until no more effervescence is observed.NOTE: The stirring must be vigorous enough to dissolve the solids. It is advisable…A volumetric flask made of Pyrex glass is calibrated at 20 °C.It is filled to the 100 mL mark with 35 °C acetone. After the flask is filled the acetone cools and the flask warms so that the combination of acetone and flask reaches a uniform temperature of 32 °C. The combination is then cooled to 20 °C. a) What is the volume of the acetone when it is at 20 °C? b)At the temperature of 32 °C, does the level of acetone lie above or below the 100 mL mark?
- i) Write down the equation derived from your Excel generated standard curve , figure legend and describe its components; ii) provide the values of the absorbance data of the unknown sample (do NOT show the absorbance data of the glycine standards). Show all details of the working out of your calculation. Indicate all units! Provide the answer with two decimals precisionOrder: Cefuroxime axetil (Ceftin) 450 mg, PO, bid Using the following drug label, how many milliliters of Cefuroxime axetil (Ceftin) will the patient receive per dose? __ mL Round your answer to the nearest whole number.You are given as following : 20 µl pure LDH on ice, 2.0ml of 6mM NAD+, 2.0ml of 150mM lactate, and 0.14M CAPS buffer. LDH reaction cocktail has final concentration of 1mM NAD+ and 25mM lactate in 0.14M CAPS buffer. LDH activityis measured by mixing 10 µl of LDH sample and 990 µl LDH reaction cocktail before getting ∆A340/min reading on spectrometer. (a). Describe in detail how you would prepare for your LDH reaction cocktail including how to make dilutions.
- Order: labetalol 40 mg IVP STAT now Using the following drug label, how many milliliters of labetalol will you give? __ mL Round your answer to the nearest whole number.A chemist is performing a precipitation titration on a 1.00 L sample containing an unknown concentration of the cadmium ion, Cd2+. If it takes 24.52 mL of a 0.250 M solution of Na2CO3 to reach the end point, calculate the concentration of the cadmium ion?Physical and Biological SciencesA bomb calorimeter was calibrated by burning 1.013 g of benzoic acid(C7H6O2) (ΔUcomb = 3.221 × 103 kJ/mol). The temperature change in thecalorimeter during the calibration combustion was 5.19°C. A nutritional chemist then used the calibrated calorimeter to determine the energy con-tent of food. The chemist carefully dried a sample of food and placed 0.8996 g of the sample in the calorimeter with sufficient oxygen for thecombustion to go to completion. Combustion of the food sample causedthe temperature of the calorimeter to increase by 4.42°C.1. Approximately how many moles of O2 gas were consumed in thecalibration combustion?a) 0.008 c) 0.2b) 0.1 d) 0.06 2. What is the heat capacity (CV) of the calorimeter?a) 5.15 kJ/°C c) 5.12 kJ/°Cb) 5.08 kJ/°C d) 4.97 kJ/°C3. What is the energy content of the food?a) 22.8 kJ/g c) 25.3 kJ/gb) 4.97 kJ/g d) 0.201 kJ/g4. What would be the effect on the result if the food sample were notcompletely dried prior to being…