Nitrogen Lab Report

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

Procedure: Have you made any changes to the procedure? Please explain. If you made no changes, state so. (1 point)

* Diamond is the strongest natural mineral known by a man. It is a crystalline form of carbon.

Water uptake capacity of NCs enables them to entrap exudates upon contact with suppurating wounds which is desirable for their effectiveness as wound dressings. The increase in size and agglomeration of AgNPs from NC-1 to NC-3 might have resulted in more blockages of pores of CNCs which could be responsible for a decrease in water uptake capacity of NC-2 and NC-3 as compared to NC-1.

Hypothesis: The purpose of this experiment was to investigate the question will different food sources affect the level of activity of detoxification enzymes in bean beetles? The class alternate hypothesis is different food sources will affect the level of activity of the detoxification enzymes in bean beetles. The null hypothesis is the different food sources will not have any effect on the level of activity of the detoxification enzymes in bean beetles. Experimental design: The independent variables in this experiment were the types of beans (bean 1 was mung beans and bean 2 was adzuki beans) and enzymes assays used.

2. (5 pts) List and explain the names and affiliations of the various characters/stakeholders in this story – I’m looking for us to use the story to map out the complexities that are generally associated with solving public health puzzles – the stakeholders you list and explain here should apply to many of the cases we consider going forward.

This is done through a change in temperature. Over time, two objects that are in direct contact will

2. When 2.00 g of NaOH were dissolved in 49.0 g water in a calorimeter at 24.0 ˚C, the temperature of the

I am Kristal Lopez in your Chemistry 120B– lab section 8 on Tuesdays and Thursdays from 11am to 1:50pm. I am writing to you because yesterday, Thursday September 22, in lab I forgot to get my lab notebook sheet signed and turn in the carbon copy. I was wondering if there was anything I could do about it? Thank you for your time and I hope you have a nice day.

Label three test tubes A - C and place them in a test tube rack. Using a graduated beral-type pipet and add about 2 mL of the cobalt chloride solution to each test tube A - C. Make sure a pipet is used to measure so that all volumes are equal. Place A in an ice bath, B in boiling water, and C should remain a constant temperature. Add HCl to each and observe.

Petrographic thin sections were prepared and optically analyzed using Leitz polarizing microscope. Optical microscopy was very useful for identifying the mineral composition, different litho types and the exact stratigraphy of the samples. It provided information on the decayed layers and their size, color and texture. Additionally, the characteristics of minerals, cement materials and textural and digenetic features of the samples were further examined.

he Stream Team tested the nitrate levels, air temperature, dissolved oxygen, pH, turbidity, and phosphate in the stream. The Nitrate test the average of all the tests taken where .25 mg/L.The air temperature of the day the test was taken was 11.7 degrees Celsius. The dissolved oxygen levels of the stream the day of testing were 5 mg/L.The average pH levels were 7.85. The turbidity of the stream the day we tested was 10 NTU.The phosphate level for the was not available because all tests performed showed there was no phosphate in the stream. The stream tested was Cole Camp Creek.Beginning at 0857.All of the tests were taken from circulating water.

The atomic number of nitrogen is 7. Nitrogen is in group 15 (or Va) of

Ammonia is most likely to injure plants if you don't known what you're doing. Using ammonia is especially risky if you're unaware of the pH of the soil and water that you're using, and if you don't know the exact concentration of ammonia that you're applying. Concentrations as low as 3.5 parts per million are toxic to seedlings. (See References 2, p. 25) Also, according to the University of California, applying ammonia too close to the plant and not deep enough can also result in plant injury. (See References 4) You might be better off and more successful when using a commercial fertilizer to promote plant growth.

The existence in the same physical state of two or more structural forms of the same element is known as allotropy. Allotropes of carbon are the ability of carbon to exist in various forms in the same physical state. Carbon can exist in three different allotropic forms. These are diamond, graphite, and amorphous or non crystalline. Diamond and graphite form the crystalline carbon.