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There is three second pause between end of 16 note tune and beginning of hour chimes. How much time each day bell tower spends chiming including pauses between chimes?
The blood alcohol levels can be measured by the REDOX titration with the potassium dichromate according to the following unbalanced reaction (in the acidic solution):
Suppose the specific heat of the solution to be4.184 joules/grams degree Celsius. Determine the heat in joules given off when the temperature of 25.6 of solution changes from 23.56 degrees Celsius
Determine the functions of glycolipids, phospholipids, and the sphingolipids? Explain what distinguishing characteristics are used to place lipids into one of these categories?
Provide the list of some properties that could be used to construct the diagnostic tests to find out the type of solute in each of the following solutions:
Determine the equation for the formation of the first tripe tide and the second tripe tide. Determine the order of amino acids using symbols for the first tripe tide and the second tripe tide.
Determine the molarity of 0.60 L of HCl is necessary to titrate the 0.58 L of 0.89 M NaOH so that all the OH- is neutralized? Provide your answer with two significant figures.
Estimate the oxidizing agent HNO3, H2S, S, NO ,H2O ?Estimate the oxidation state for nitrogen in this compound NOCl?Estimate the oxidation state for bromine in this moleculeHBrO2?
Exactly 100 mL of 0.10 M nitrous acid (HNO2) are titrated with a 0.10 M NaOH solution. Measured the pH for (a) the initial solution, (b) the point at which 80 mL of the base has been added, (c) the
Assume seven students are staying in the hall in the hostel and they are assigned 7 beds. Among them, Parvin doesn't want the bed next to Anju because Anju snores. In how many ways can you assign b
A solution which is having 25.0 ml 0.112 M Fe2+ is titrated with the 0.0258 M KMnO4. Suppose [H+] = 1.0 M and is constant. Determine Ecell at the eq. pt. The reference electrode is SHE by us
Discuss why is an additional10mL of water evaporated from the solution, in the preparation of aluminum alum, if crystals should not form upon cooling the solution of alum.
Determine a salt that would not affect the pH of water and what salt would lower the pH of water? What salt would increase the pH of water?
The resulting Na2 C 2O4 precipitate was filtered and dissolved in the dilute H2SO4 .This solution needed 2.05 mL of 4.88 X10-4 M KMnO4 to reach the end point.
A balloon which is having 5.41 dm3 of helium, He at the 24o C and 101.5 kPa. Assume the gas in the balloon is heated to 35o C. If the He gas is now 102.8 kPa, estimate the new volume of
Determine the numbers of square kilometers of ocean will be covered by the 1 barrel of oil? If the 1barrel is equal to 31.5 gallons and the oil creates a film of 100nm thick on water.
4 NH3 (g) + 5 O2 (g) yields 4 NO (g) + 6H2O (g). Determine the Heat of Reaction values:NH3 (g) = -45.9kJ; O2 (g) = 0 kJ; NO (g) =90.3 kJ; H2O (g) = -241.8 kJ
The monthly sales at the computer store have the mean of $25,000 and standard deviation of $4,000. Profits are 30% of sales less fixed costs of $6,000.
A propellant for rockets is obtained by mixing dinitrogentetroxide N2O4 and the liquids hydrazine N2 H4. These components react to give water vapor and nitrogen gas N2, evolving 1049 kJ of heat a
Determine the age of a rock whose 40Ar/40Kratio is 1.25?(The half-life of 40K is 1.28 109years.) and calculate the age of a rock whose 40Ar/40Kratio is 1.25 where the half-life of 40K
Suppose you perform an acid-base titration to standardize an HCL solution by placing the 50.00 mL of HCL in a flask with a few drops of indicator solution and you put 0.1523 M NaOH into the buret an
Discuss what would be the product of a Grignard reagent with an acid chloride such as the acetyl chloride? Determine the numbers of moles of the Grignard would react per mol of acid halide?
A microwave oven operating at the 1.22 x108 nm is used to heat 150 mL of water (roughly the volume of a tea cup) from the 20 degrees Celsius to 100degrees Celsius.
When the magnesium metal is burned in the air, it produces two products A and B. A reacts with the water to produce a basic solution and B reacts with the water to produce a similar solution as that
Discuss what group of elements in the periodic table is made up entirely of elements that are gases at the room temperature? Determine the name of this group of gases?