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When ammonia was added to the hydrated nickel chloride the liquid turned from green to purple and when heated then put in ice water a solid was formed.
Benzyl chloride (12.65g), Sodium methoxide (10.8g) and 200ml of methanol were placed into a 500ml round-bottom flask equipped with a reflux condenser and a magnetic stirring bar. The mixture was hea
How many milliliters will contain the order of 0.35mg when the physician ordered the 0.35 mg of a drug? A 1-mL ampuleon hand contains 400 micrograms.
Does this have to do with the Bohr model being concern with only the principal quantum number? In this case it would be n =4, which would imply degenerate energy in the Bohr model?
Explain how can the same atom of hydrogen in quick succession emit a photon in the Brackett, Ballmer, Paschal, and Lyman series? Can it emit them in the reverse order? Why or why not?
Determine how many angular nodes? Draw a contour diagram. Explain the angular and radial nodal surfaces, provide the equations for these.
The chemistry of compounds composed of a carbon monoxide and transition metal has been an interesting area of research for the past 60 years. Ni (CO) 4 is produced by the reaction of nickel met
What maximum percentage of sulphur content can the fuel have if all of the sulphur oxidizes to So2 and if the emissions of SO2 are limited to0.6 lb SO2 per million Btu of heat into the power plant?
Student A measures that a 7.43-g sample of solid displaces the 2.80 ml of water in a graduated cylinder. Student b measures a 6.10-g of the same sample metal. Estimate the volume of water should sa
What will be the osmotic pressure in torr of this solution at 25degree Celsius when a solution of .125 g of a protein dissolved in 50 mL of water, if the molar mass of the protein is 15000
In this lab we heated a magnesium ribbon in a crucible to produce the MgO. The point was to discover it's Empirical Formula. Knowing that room air contains N2 as well as O2 we added H2O to get rid o
Perform a basic economic analysis. Assuming that it will cost the $25/L to dispose of liquid waste and $25/kg to dispose of solid waste, demonstrate how the cost of waste disposal influences the cos
Determine the silver concentration in a solution prepared by mixing the 250 mL of 0.310 M silver nitrate with 100 mL of 0.160 M of sodium chromate?
Determine a reactor in which the production rate of U-239 via the238U(n, γ) 239U reaction is 10^5 atoms/s. Determine the activity of 239Pu after an irradiation of
Determine the probability of a 222Rn atom decaying in our lounges? The atmospheric concentration of 222 Rb may be assumed to be 1 pCi/L. In an average breath we inhale 0.5 L of air and exhale it 3.
Consider the case where A → B → C and where λA = λB. Develop an expression for the activity of B as a function of time. Determine the time t when the activity of Breaches a m
Sulphur dioxide reacts with the chlorine to form the thionyl chloride (used as a drying agent for inorganic halides) and dichlorine oxide(used as a bleach for pulp, wood and textiles).
Magnesium nitrate (Mg (NO3)2) solution is mixed with the potassium carbonate solution (K2CO3). Write down the balanced molecular equation describing this reaction using the appropriate. State subscrip
Discuss why the Cell Membranes are disrupted from a slight cooling? For example, I did a lab and the plasma membranes were disrupted more at 5 degrees Celsius than they were at room temp.
How many iron atoms are within a unit cell? Metallic iron crystallizes in a cubic lattice the unit cell edge length is 287 pm. The density of iron is 7.87 g/cm3.
Determine how many times faster would this reaction be if the reaction temperature is 50.0 0C? A certain reaction with activation energy of 64.5 kJ/mol, runs at the 25.0 0C and its rate is c
Suppose that 4.06 x 106 kJ are required to heat a swimming pool. If this energy is derived from the combustion of methane (CH4) at standard conditions (25 oC and 1 atm) explain what volume i
All protein structure is based upon the formation of the amide plane. The 2 degrees of freedom related to rotations about the chiral carbon atom are described by the parameters Φ and ψ .
A 6.0g sample of a compound whose empirical formula is (CH2) x is dissolved in the 200g of benzene. Molecular weights can be determined by freezing point depression measurements.