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- In a hospital laboratory, a 10.0 mL sample of gastric juice, obtained several hours after a meal, was titrated with 0.01 M NaOH to neutral pH of 7.0; 72.0 mL of NaOH was required for this titration. The patient’s stomach contained no ingested food or drink, thus assume that no buffers were present. What was the pH of the 10.0 mL gastric juice sample before titrating with NaOH?The Kjeldahl method is commonly applied to food samples for the determination of total protein content. (a.) Outline the procedures of Kjeldahl method. (b.) Calculate the per cent protein of the food sample if the following results are obtained: -mass of food samples: 1.015 g -Normality of HCL: 0.1 N - Volume of HCL used for sample: 22.0 mL - Volume of HCL used for blank: 0.2 mL - Conversion factor of per cent N in protein: 6.25 (c.) The value of total protein content obtained from (b.) was much higher than that expected. Suggest one possible reason and the corresponding solution for improvement of the analysis.A patient is suspected of having low stomach acid, a condition known as hypochloridia. To determine whether the patient has this condition, her doctors take a 18.00 mL sample of her gastric juices and titrate the sample with 3.94 x 10-4 M KOH. The gastric juice sample required 6.60 mL of the KOH titrant to neutralize it. Calculate the pH of the gastric juice sample. Assume the sample contained no ingested food or drink which might otherwise interfere with the titration. pH = Enter numeric value For the patient to be suffering from hypochloridia, the pH of the gastric juices from the stomach must be greater than pH 4. Does the patient have hypochloridia? no O unable to determine O yes
- If a protein concentration is 1 mg/ml and diluted it by 1/10;what is the final concentration?A patient is suspected of having low stomach acid, a condition known as hypochloridia. To determine whether the patient has this condition, her doctors take a 18.00 mL sample of her gastric juices and titrate the sample with 4.85 × 10-4 M KOH. The gastric juice sample required 1.26 mL of the KOH titrant to neutralize it. Calculate the pH of the gastric juice sample. Assume the sample contained no ingested food or drink which might otherwise interfere with the titration. pH = For the patient to be suffering from hypochloridia, the pH of the gastric juices from the stomach must be greater than pH 4. Does the patient have hypochloridia? unable to determine no yesEach scoop of protein powder has 26 grams of protein. If you add 2 scoops of protein to your drink, how many kcals from the protein will you consume? Round to the nearest whole number. Include the unit in your answer after a space. (g for grams and kcals for calories). Conversion Chart Carbohydrates: 1 gram = 4 kcals Protein: 1 gram = 4 kcals Fat: 1 gram = 9 kcals Alcohol: 1gram = 7kcals
- For each solution, calculate the rate of weight change over this 30-minute period. Write your answer in standard notation and use 3 digits past the decimal point 0.0 M sucrose = ____________________ g/min 0.4 M sucrose = _____________________ g/min 0.6 M sucrose = _____________________ g/min 0.8 M sucrose = _____________________ g/min 1.0 M sucrose = _____________________ g/min Time (min) 0M sucrose 0.4M sucrose 0.6M sucrose 0.8 M sucrose 1.0M sucrose 0 4.36 g 4.59 g 4.7g 4.5 g 5.0 g 15 4.5 g 4.3 g 4.4 g 4.1 g 4.6 g 30 4.6 g 4.2 g 4.0 g 3.7 g 4.0 gHow do you make 70 ml of a 60% solution??You were instructed to add 0.2 ml of kombucha to 9.8 ml of fresh tea, but instead added 2.0 ml of kombucha. What was the intended dilution? What was the actual dilution? Show your calculations.