(d) What evidence suggests that nitrate compounds are soluble in water? (e) Write the chemical formula for each precipitate that formed. Apply and Extend (f) Write a balanced chemical equation for each precipitation reaction that occurred. (g) Why is it necessary to use distilled water to prepare the solutions used in this investigation? (h) "Hard" water contains a high concentration of calcium ions.
How deep must the cable be buried? It must be 42 inches under the top of the pavement. 6. What are the exact detailed compaction requirements as listed in the manual provided by the city for restoration of any surface that is trenched? The backfill material needs to be compacted in lifts of loose depth that does not exceeding 8 inches and compacted to at least 95% of Standard Proctor Density at optimum moisture content, +/- two percentage points, as determined by ASTM D698 or provide the City with suitable advanced technology compaction testing methods, as approved by the Director 7.
Find the molarity is essential to numerous amounts of future procedures such as equivalent weigh. The titration of hydrochloric acid was also completed for practice of titrating and basic understanding of the characteristics of the strong acid. In all three titration experiments an indicator was used to illustrate the
Add hydrochloric acid to a test tube. Cut a piece of magnesium ribbon (couple of centimeters). Record the physical properties of both substances. 2. Write a hypothesis on what you think will happen when mixed.
Jessica Atanova CHEM 104 lab 03/10/14 SUBSTANCES Granular zinc- gray crystal like | Iodine crystals- dark, circular, rock-like | De-ionized water: used for standard Zinc Ion procedure. | Materials: Boiling tube: for products. | Small test tubes: used to centrifuge the solution and precipitate | Graduated cylinder: used for measurement of water | Stirring rod: used various times to stir samples and solutions. | Spatula: used to measure and transfer the substances. | Centrifuge: used to isolate the solid from the solution | .
Some of the environmental issues related to hydraulic fracturing must be investigated and regulations must be put in place. As a nation dependent on energy we must regulate and consider all consequences before allowing the depletion of yet another natural and non-renewable resource. Environmentalists claim an array of issues related to fracking. Polluted groundwater and aquifers, micro seismic events, disposal of waste water and the mining of the silica sand which is used in the process are all by-products of a loosely regulated practice. Studies have been done, from measuring the effects on drinking water to monitoring seismic events related to fracking.
Abstract The objective of the south street seaweed experiment is to make a tincture of iodine. Iodine is used commercially as an antiseptic on cuts and scrapes of the skin. Conceptually, one of the active ingredients of the tincture, iodide, can be extracted from seaweed. By adding the seaweed to water and applying heat energy into the mixture, we were able to extract iodide. After adding Iodine salts, and filtering the mixture our next goal was to test for three important chemicals that must exist in our mixture for it to be a true iodine tincture; Iodine, Iodide Ion and the triiodide ion.
There is considerable evidence that getting the correct operating conditions is more important than the choice between MRP, kanban, or reorder point methods in the MPC system. How general do you believe this situation to be? Submit your assignment to the Dropbox located on the silver tab at the top of this page. For instructions on how to use the Dropbox, read these step-by-step instructions or watch this Dropbox Tutorial. See the Syllabus "Due Dates for Assignments & Exams" for due date information.
The retainer wall has remained in place because it withstands the continual flow of water and wind erosion. However, maintenance is required on a regular basis to replace worn away bricks and broken concrete grout. The rock footings move with the motion of the sand and water and breakage of the footpath occurs. As a result sections of the footpath need to be replaced from time to time. Overall the repair process is effective in maintaining the pathways that humans
From experimental results, it is found that the ratio of funnel speed to flow area of mortar with a fixed amount of super plasticizer is almost constant, independent of the water powder ratio. The higher the amount of super plasticizer the lower is the ratio of funnel speed to flow area. This ratio is proposed as an index for the effect of super plasticizer on mortar flowability and viscosity from the viewpoint of achieving self-compatibility. This index is useful to evaluate the amount of super plasticizer for proper flowability and viscosity of mortar. Sukumar and Nagamani (2010) reported the relation between superplasticizer dosage and fly ash content existed in SCC mixes with 8-52% fly ash, slump flow of 742-793 mm and w/p ratio of 0.31-0.34.