Concept explainers
(a)
Interpretation:
Calculate the bulk density of the materials in the bag.
Concept introduction:
Specific gravity is defined as:
(b)
Interpretation:
Calculate the weight of the filled bags. State your assumptions.
Concept introduction:
Specific gravity is defined as:
(c)
Interpretation:
Briefly explain whether the crushed limestone particles fill 50-L bags.
Concept introduction:
50-L bags are used to store Limestone (Calcium Carbonate). It is given that the void fraction of the particulate matter is 0.3 and the specific gravity of the solid calcium carbonate is 2.93.
A ball mill is used to crush the limestone and turn them into powder.
The ball mill is a device used to crush solid particles, inside ball mill there are rotating steel balls. The solid particles crush into small particle due to the impact of these steel balls.
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EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
- 1. Calculate the volume of carbon dioxide adjusted to 25 °C and 1 atm, that plants need to make 1.00 g glucose, CóH12O6, by photosynthesis in the reaction 6CO2(g) + 6H20(I) C6H1206(s) + 602 (g).arrow_forwardA student performed the experiment described in this module, using 6.00 mL of a 3% H2O2 solution with a density of 1.03 g mL-1. The water temperature was 22 ° C, and the barometric pressure in the laboratory was 30.30 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 65.40 mL of Oz. (7) Calculate the mass of H2O2 in 5.00 mL of the H2O2 solution.arrow_forwardInsects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and penetrate into the interior. Suppose that a tracheae is 1.34 mm long with a cross-sectional area of 2.46 x 10-9m2. The concentration of oxygen in the air outside the insect is 0.794 kg/m3, and the diffusion constant is 1.26 x 10-5 m2/s. If the mass per second of oxygen is diffusing through a trachea is 1.66 x 10-12 kg/s, then find the oxygen concentration at the interior end of the tube.arrow_forward
- 25.0mL of a 0.515 M K2S solution is mixed with 30.0 mL of 0.833 M HNO3 acid solution to give the following reaction: K2S(aq) + 2HNO3(aq) → 2KNO3(aq) + H2S(g) H2S is an unwanted by-product in a pulp and paper industry. To capture H2S gas, it is bubbled through a NaOH solution to produce Na2S with a yield of 94%. H2S(g) + 2NaOH (aq) → Na2S (aq) + 2H2O(l) The mass of H2S(g) that was processed (in kg) if 10.76 kg of Na2S was collected isarrow_forwardA 100-liter empty jar was spiked with 20 mg of TCE (C2HCl3) under room temperature condition. The jar was then closed tightly. What is the concentration (in atm.) of TCE in the air at 25 C? (TCE: MW: 131.4 g/mol; TCE solubility in water (Cs) = 1100 mg/L; Pv (pure liquid at 25oC) = 10^-1.01 atm. KH = 10^1.03 L atm mol-1; KOW = 102.42). if the jar was half filled with water and half filled with air, what were the concentrations of TCE in both air and water at 25C?arrow_forwardDescribe the preparation of 1100 mL of 6.00 M HNO, from the commercial reagent that is 91% HNO;(w/w) and has a specific gravity of 2.11.arrow_forward
- Following the irrigation of salted soils, 10,000 L of salty irrigation runoff was filtered by a reverse osmosis (RO) treatment plant generating 7,000 L of pure water for return to a local river. Following RO treatment, the brine (left-over salt solution) concentration was 1.95 M NaCl. What was the hydrostatic pressure (atm) required by the RO plant to filter this volume of the salty irrigation runoff at a temperature of 20.0 oC?arrow_forwardWater is not the only chemical contaminant that can be removed from liquids and gasses using molecular sieves. Ammonia, for example, can be removed from gaseous samples using the same 3Å molecular sieves that we used to remove water from ether. Other common contaminant gasses like sulfur dioxide, dihydrogen sulfide and ethylene, however, cannot be removed using 3Å sieves. They can only be removed using 4Å molecular sieves. Explain why this is so.arrow_forwardThe principal reaction in a series of complex reactions performed by microorganisms involved in wine making is the conversion of sugars into alcohol in a process known as fermentation. The starting concentration of sugars determines the final alcohol content and the sweetness of the wine. Adjusting the specific gravity of the stock solution achieves the desired quality of the wine. Assuming the sugars in the stock solution with a specific gravity of 1.075 are all C12H22011 equivalent to 12.75% wt., calculate the following:a) How much is the amount of sugar per kg of water?b) How many lbs of solution is present in a cubic feet of solution?c) What is the weight of sugar in grams for every liter of solution?arrow_forward
- Pressure (A) Explain the term pressure and state its S.I. unit. (B) Explain Henry’s law. (C)A bottle of H2 has just been received by the technicians in DkIT for use in the instrumentation lab. It is a 47 litre cylinder at a pressure of 50 atmospheres. The normal working pressures is 2 bar. (i) To what volume of gas will that equate at the working pressure? (ii) For how many hours will the gas last if it used at the rate of 0.5dm3 per hour? D)You see your best friend at the bar and you walk up behind her. You accidentally startle her and she takes a step backwards. Unfortunately, she is wearing high heels and her heels come down on your foot. She weighs only 55kg but the size of her heel is 6mm by 6mm.Determine the pressure that she applies on your foot. (E) If a diver dives to a depth of 35 m what will be: (i) the pressure in Pascals due the water column? (3 marks) (ii) the pressure of the air in…arrow_forward C6H12O6(aq)+ 2C2H5OH(aq)= 2CO2(g) Fermentation of 750 mL grape juice (density= 1.0g/L) is allowed to take place in a bottle with a total volume of 825 mL until 12% by volume is ethanol . Assuming that the CO2 is insoluble in H2O (actually, a wrong assumption), what would be the pressure of CO2 inside the wine bottle at 25 degrees Celcius? (The density of ethanol is 0.79g/L .)arrow_forwardA student performed the experiment described in this module, using 6.00 mL of a 3% H2O2 solution with a density of 1.03 g mL-1. The water temperature was 22 ° C, and the barometric pressure in the laboratory was 30.30 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 65.40 mL of O2. (6) Calculate the mass of the H2O2 solution.arrow_forward