food items weighing 10 kg initially have a moisture content of 400% (dry basis). This material is dried to a moisture content of 25% (wet basis), determine how much water is removed from the material
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food items weighing 10 kg initially have a moisture content of 400% (dry basis). This material is dried to a moisture content of 25% (wet basis), determine how much water is removed from the material
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- A multiple effect evaporator has a capacity to process 10000 kg of solid caustic soda per day, when it is concentrating from 3% to 40% solids. The water evaporated in kg per day is _________________1. State the process that is used to separate kerosene and diesel fuel. State the operating conditions of this process. 2. State the process that can be used to yield fraction of heavy fuel oil from crude oil. 3. Describe the difference between straight run naptha and cracked naptha.Take the solution 10.12g, add 10mL of deionized water, and cool the solution to 0 degrees Celsius. How much CuSO4, 5H2O crystallizes out?
- It is desired to determine the molecular weight of an organic compound known to be volatile. For this, a glass balloon with a full volume of 152 mL is weighed and the weighing result is recorded as 215 g. Then, the organic compound that is desired to have some molecular weight in liquid form is added into the balloon and evaporated in a water bath until dryness. After the steam temperature is measured as 90 °C, the balloon is left to cool and the organic compound in the balloon condenses again. The balloon is then weighed again and recorded as 215,367g. Find the molecular weight of this organic compound since the pressure of the environment where the experiment is performed is 700 mmHg.heating a mixture to 100 degrees is necessary to seperate a mixture only containing salt and sand true or false?Volumetric pipettes are designed to deliver a precise amount of liquid, but only if you a. submerge the end of the pipette into a solution you are delivering. b. allow the pipette to drain freely, and leave any residual solution in the pipette. c. hold the pipette at a 45 degree angle and ensure that all the liquid is delivered.
- In detail describe dry chemical systems.Referring to the Al-Si Eutectic diagram discussed on the Phase Diagrams-Lever Rule handout, calculate the mass fraction of the phase, silicon, given a sample with 51.7 wt% aluminum at 576.99 ˚C.Which of the following are safe and effective techniques for drying organic solids recovered from a filtration? (Choose all that apply). a. Spreading the solid evenly on a watch glass or aluminum weigh boat and placing it in an oven set at a temperature 20 °C below the substance's expected melting point. b. Placing it on top of a hotplate set on low. c. Leaving the solid on the funnel with the vacuum on for several minutes. d. Blowing on the solid.
- A volatile liquid (one that evaporates quickly) was put into a jar and sealed. The temperature of the jar is slowly increased from room temperature (25⁰C) to 35 ⁰C.Recall that you are on the board of trustees for a Wisconsin township that frequently experiences winter temperatures of -16 °C. You are responsible for ensuring that the city’s 30,000 residents are able to travel safely in even the coldest and iciest conditions. You must decide if the city purchases the pre-prepared ice melt blend or proposes a new blend for use in winter 2022. You must consider environmental impact, lowest effective temperature, cost, and your experimental results in your decision. Of note, the pre-prepared blend would simplify logistics for the city, but the company’s price includes a $5/ton mixing fee; if you create your own blend, the cost would simply be calculated from the 2022 projected prices of pure compounds in Table 2.1 plus the $5/ton mixing fee. Would you recommend the city purchase the pre-prepared blend or change the percent composition of blended ice melt? Regardless of which choice you recommend, you must include the following in your response:…DAY 1 Preparation of Aspirin Using tap water, set up a boiling water bath in a 400ml beaker. Residual solubility. The solubility of acetylsalicylic acid is 0.25 g per 100 ml of water. Keep track of how much DI water is added to the aspirin during filtration and recrystallization. Mix the starting materials and heat. Using the electronic balance, weigh about 2 g (± 0.01 g) of salicylic acid (caution: this is a skin irritant) in a 125 – ml Erlenmeyer flask. Cover the crystals with 4 – 5 ml of acetic anhydride. (caution: acetic anhydride is a severe eye irritant --- avoid skin and eye contact). Swirl this reaction flask to wet the salicylic acid crystals. Add 5 drops of conc H2SO4 to the mixture and gently heat the reaction flask in a hot water bath (60-70oC) for 5 – 10 minutes. (caution: H2SO4 causes severe skin burns). Set up an ice water bath in a 250ml beaker. Cool to crystallize the aspirin. Remove the reaction flask from the hot water bath and add 10 ml of deionized ice…
