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If the pre-1982 pennies weigh on average 3.09 g and thepost-1982 pennies weigh 2.51 g, a student weighs the 1131 pennies and finds them to have a mass of 3001.8 g. Determine the numbe
Determine the percent by mass of potassium nitrate in a solution made form 45.0 KNO3 and 295 mL of water and the density of water is 0.997g/ml
Determine systematic way to make all such permutation. without writing them all out find number permutations of 3 distinct elements of D.
If they remove them 3 at a time, 2 eggs will remain. If eggs are removed five at a time, three eggs will remain. Compute the smallest number of eggs which could be in basket.
Consider the M/M/1 queue with the mean inter-arrival time of seven minutes and the mean service time of 5 minutes. Notation M/M/1 means the following. Is this the "stable or steady-state" queuing mo
Determine distance traveled from rest di, at time ti by the particle following parametric path. Determine velocity and acceleration vectors at time t. At what time to are velocity and acceleration o
Assume banking systeam has reserves of $750,000, demand deposits of $2,500,000 and the reserve requirment of 20%. How much can the banking system increase the money supply by, given the new reserve po
The client receives the $475.00 Refund Antcipation Loan that is paid back in twenty days, determine annual rate of interest for refund anticipation loan if fee is $29.00.
Like wise, continue to transfer 500 ul from every tube of remaining tubes to tube which follows it until all 5 tubes have been utilized. Determine final concentrtion of glucose in tube 5?
Discuss what mass of this solution do you need in order to have 2.25 moles of ethanol? Suppose you require the 2.25 moles of ethanol (C2H5OH) and you have an ethanol solution which analyzes 95% by ma
What happens in a redox reaction when the 10 drops of iron sulfate is mixed with the 2mL of 3 percent peroxide? Does the 2H dissociate from the sulfate and form H2 gas or what? Does 2HSO4 and 2FeO p
If a 22-gram serving is put out for Dave, it takes him 5 minutes to consume half of it. The rate at which Pat's rat Dave eats his food has been found to follow second-order kinetics. Discuss how lo
Compute an electron with n=1 in a box of length 2.000 nm. Determine the probability of locating the electron (a) between 0.500 nm and 0.502 nm and (b) among 0.999 nm and 1.001 nm.
If the initial concentrations of Br2 and Cl2 are each 0.020038 M, what will be their equilibrium concentrations in M? At 25 °C, Kc= 0.145 for the following reaction in the solvent CCl4&n
Calculate the pressure if 1.0 mole of N2 gas is added to the container while keeping the temperature and the size of the container the same?
Assume the particle to be in the lowest level. Calculate the probability of locating a particle in a one-dimensional box between L/4 and3L/4, where L is the length of the box?
Calculate the probability of locating the electron (a) between 0.500 nm and 0.502 nm and (b) between 0.999 nm and 1.001 nm. Do not use integration.
Determine the number of grams of NH4Br that have to be dissolved in 1.00L of water at the 25degrees C to have a solution with a pH of 5.16
How long does it take for the water to reach the boiling point? The specific heat of copper is 0.385 J/(g*°C). A 300.0 g copper pan containing 800.0 mL of water is put on the stove.
"The gas is a compound of hydrogen and nitrogen in the atomic ratio 1: 3. A sample of ammonia which is having 1.712 g H and 7.933 g N. calculate the atomic mass of N relative to H?"
HCl and NaOH are each 1.0M and used 50mL of each. Explain how would it affect the enthalpy per mol of water formed if 1.0M HNO3 were used instead of the HCl?
Determine the numbers of milli moles of a solute are present in 500.0mL of.3500 M. Also, if 25.00 mL of that solution is pipette into a 200 mL volumetric flask and distilled water added to the mark
How can develop the Henderson-Hasselbalch equation for buffers starting from a buffer solution that contains a weak acid (HA) and its conjugate base (A-)?
.Determine the absorbance of the solution if its concentration is 0.0278 M and its molar extinction coefficient is35.9 L/(mol cm). The depth of the cell is 5 mm.
How can find the emf formed in the rod when a metal rod of length 0.25m is moving at the speed of 0.5m/s in a direction perpendicular to a 0.25T magnetic field.