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Suppose one triangle is similar to another and the ratio of corresponding sides is r. What can you say about the ratio of the areas? Prove your contention.
Calculated the change in entropy of the copper taking C=24.4j/kmol. The experiment is then repeated with the copper immersed in a stream of water that maintains its temp at 293. Calculate the change
A contractor rented a sander for 5h and a polisher for $50. For another job, she rented the sander for 4h and the polisher for 8h. The rental fees for the job totalled $56. Find the hourly rate char
If 3.35 mL of vinegar needs 44.0 mL of 0.135 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.50 qt sample of this vinegar?
In the lab you determine the molarity of KMnO4 to be 0.08611 M for your first titration and 0.08837 M for your second titration. What is the relative precision for these two trials?
How does the Hammond postulate explain: a. the greater selectivity for bromination vs. chlorination of an alkane?
A 65.0 g sample of zinc (specific heat = 0.0922 cal/g X deg C) was cooled from 100.0 deg. C to 29.4 deg. C in a calorimeter cup containing water initially at 21.5 deg. C. What is the mas of the wat
A triangle has a perimeter of 23 inches. The medium side is 3 inches more than the shortest side, and the longest side is twice the shortest side. find the shortest side.
Calculate the quantity of heat in kJ, associated with a 33.5 degrees Celsius in temperature in a 5.85kg aluminum bar ( specific heat of aluminum= 0.903 J g-1 C-1 )? Please show all work.
Explain the purposes of inductive and deductive reasoning in mathematics. Be sure to define both inductive reasoning and deductive reasoning and describe how each can help you develop and prove theo
The higher heating value (HHV) of a fuel is its standard heat of combustion at 25 C with liquid water as a product; the lower heating value (LHV) is for water vapor as product.
The area of the patio is 90 square meters. If the bricks measure 20 centimeters by 4 centimeters, how many bricks will it take to make the patio?
Describe how a linear sequence of amino acids gives rise to the three-dimensional structure of proteins. Detail the significance of this structure, how it may be modified, and the results of such mo
A square is divided into 3 pieces of equal area by 2 parallel lines (diagonally). The distance between the parallel lines is 6 inches. What is the area of the square?
Initially a mixture contains 0.760 mol each of N2 and O2 in an 8.26-L vessel. Find the composition of the mixture when equilibrium is reached at 3900°C. For the reaction below, the Kc = 0.0123 a
The reaction A + 2B products was found to have the rate law, rate = k[A][B]2. Predict by what factor the rate of reaction will increase when the concentration of A is doubled and the concentration o
What is the preferred slip plane and direction for dislocation in FCC metal? Explain using the Peierls-Nabarro expression described in class.
An aqueous solution of phosphoric acid, H3PO4, contains 285g H3PO4 in 400 mL solution, and has a density of 1.35g/mL. Calculate the weight % H3PO4 in this solution
Suppose that a particular moment during the reaction, molecular hydrogen is reacting at the rate of -0.079M/s a) at what rate is ammonia being formed? b) at what rate is molecular nitrogen reacting?
Muscle and muscle tissue, Due Saturday (EST) Nov 8 Overheated: A Case Study on Skeletal Muscle Physiology “Time to scrub in,” says Dr. Hodges. The appendectomy you are about to observe is your s
Qualitative analysis of cations, Chromium (III) hydroxide is highly soluble in distilled water but dissolves readily in either acidic or basic solution. Briefly explain why the compound can dissolve i
Consider a solution containing liquids A and B where the mole fraction of B is .60. Assuming ideality, calculate the mole fractions of A and B in the vapor at equilibrium with this solution @25.
If the concentration of an acid in solution is 2.2 times larger than the concentration of its conjugate base, and the pH of the solution is 3.5, what is the pKa of the acid?
How many Joules are required to heat 2 L of water in a pot from 20 degree C to the boiling point of water? The specific heat of water is 4.18 J/g.Degree C and the density of water is 1 g/mL
The solubility of CO2 in water at 25 degree Celsius and 1 atm is 0.034 mol/L. What is its solubility at a partial pressure in air of 0.00013 atm? Assume that CO2 obeys Henrys Law.