Consider a tank with volume 100liters containing a salt solution, Suppose a solution with 2kg/liter of salt flows into the tank at a rate of 5liters/min. The solution in the tank is well-mixed. Solution flows out of the tank at a rate of 5liters/min. If initially there is 20 kg of salt in the tank, how much salt it will be in the tank as the function of time.
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- The mass of a beaker is 5.333g. After 5.00mL of a concentrated hydrochloric acid solution is pipetted into the beaker, the combined mass of the beaker and the hydrochloric acid sample is 11.229g. From the data, what is the measured density of the hydrochloric acid solution?A chemist prepares a solution of zinc nitrate (Zn(NO,),) by measuring out 78. umol of zinc nitrate into a 100. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's zinc nitrate solution. Round your answer to 2 significant digits. mmol x10 I Don't Know Submit O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center A 0. 区 W DELL1. An iron pellet 1 cm in diameter is subjected to a heat treatment in a vacuum oven at 300 C to degas dissolved hydrogen, which is initially at a concentration of 25 ppm by weight. Estimate the time it will take for the average hydrogen concentration to reach 5 ppm. | DBF = 101 cm/scg. pr 7.8 gr/cm
- 1. In your pharmacy you have a balance with a sensitive requirement of 7mg; 10,25,50 and 100ml graduated cylinder; and 1 oz apothecary and 4-ounce apothecary conical cylinder. What is the minimum measurable volume in ml using the graduated cylinder?a. 5b. 20c. 1d. 2A tank contains 1000 L of pure water. Brine that contains 0.05 kg of salt per liter of water enters the tank at a rate of 5 L/min. Separately, brine that contains 0.04 kg of salt per liter of water enters the tank at a rate of 10 L/min. The solution is kept thoroughly mixed and drains from the tank at a rate of 15 L/min. Let y(t) be the amount of salt (in kg) aftert minutes. (a) How much salt is in the tank after t minutes? y(t) kg (b) How much salt is in the tank after 30 minutes? (Round the answer to one decimal place.) y(30) = kga large tank contains 250 liters of a salt solution which has a concentration of .75 kilograms per liter. a salt solution which has a concentration of .9 kilograms per liter is added to the solution at a rate of 70 liters per minute. at the same time the solution drains from the tank at 70 liters per minute find the amount s of the salt in the solution as a function of t
- Suppose that you are doing an experiment as part of your Capstone Design Project. A glass vessel originally contains 100 mL of fresh water. Then water containing 1 g/mL of NaCl is poured into the vessel at a rate of 2 mL/min, and the mixture is allowed to leave at the same rate. After 10 minutes the process is stopped, and fresh water is poured into the vessel at a rate of 2 mL/min, with the mixture again leaving at the same rate. Find the amount of NaCl in the vessel at the end of an additional 10 min.A tank with a capacity of 74 liters, initially contains 20 kilograms of salt dissolved in 50 liters of water. Another solution, containing 3 kilograms of dissolved salt per liter, runs into the tank at 4 liters every minute and that the mixture (kept uniform by stirring) runs out of the tank at the rate of 1 liter per minute. What is the concentration of the solution in the tank at point of overflow? Intermediate values should be rounded only to two decimal places. Round off the final answer to two decimal places.A 25.0 ml aliquot of a well-shaken and filtered sample of river water is pipetted into an evaporating dish. The sample was heated to dryness. Determine the concentration of Total Dissolved Solids (TDS) in mg/L given the following data: Mass of evaporating dish = 25.5 g Mass of dried sample plus evaporating dish = 25.9729 g Note: Round off your answer to the nearest whole number.
- Match the units to the setup below for calculation of molarity X when dissolving a liquid X (X g)(density = D g X/mL X) in a liquid Y (Y mL)(density = D g Y/mL Y). All equations are set up so that the unit on the bottom cancels with the unit on the top to its immediate left. Be sure to match any unused answers to "Unused answer". X gx= 2._ = 7. _ 1.- 5._ X gX :+Y mL 6. mL X 1. 1. mol X/L 2. 2._ MW g X 3. 3. Dg X 4. 4._ 1000 mL 5. 5._ 6. 6._ 1 L 7. 7. 1000 L 8. Unused answer 1 mol X > > > > > > >3. A solution of 20.91 % by weight H,So, has a specific gravity of 1.150. What is the normality of this solution? Water is added to dilute this solution to a solution of 3.03% by weight H,SO, (SG= 1.020). What is the new normality of the resulting solution and how were they mixed? (Assume 100 ml of the original solution was used.)S.2 CHEMISTRY HOLIDAY WORK 2022 1. Nalubula is investigating changes in mass of substances when certain changes occur them. She places some zinc metal in a beaker and finds the mass of zinc She then again places the sulphuric acid in another container and measures the mass of the acid She also mixed the zinc metal with sulphuric acid in another beaker and waters until all the zinc metal was completely dissolved She then after, finds the mass of the contents of the beaker having the mixture Sulphuric acid zinc 0000 0000 Nalubula started with 100g of zinc metal and 200g or sulphuric acid a) What mass of the products are formed in this reaction. Explain why b) Write down a word equation to describe this reaction