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The during an Apollo moon landing, reflecting panels were placed man the moon. find the distance between the astronomers and the moon
If material increases its length by 4.2% when its temperature is raised 40 degrees C, then what is its coefficient of linear expansion
If .43 g of aluminum foil was dissolved in sufficient 3M KOH solution, and the solution was acidified with 4M H2SO4, what was the theoretical yield of KAl(SO4)2 * 12H2O? If only 5.87g of alum were o
A 47 microfarad capacitor is connected to a 9 volt battery. How many electrons is this charge equivalent to
Which of the following expressions hold for 0.10 mol/L Na2HA(aq). (HA2- is the doubly-ionized form of H3A, a weak triprotic acid.)
if .43g of aluminum foil was dissolved in sufficient 3M KOH solution, and the solution was acidified with 4M H2SO4, what was the theoretical yield of KAl(SO4)2 * 12H2O
If a feather is dropped on the moon falls 81.7cm in one second, calculate the acceleration due to gravity on the moon
1)Acetic acid, CH3COOH, is a weak monoprotic acid (pKa=4.74 at 25oC). What is the pH of 0.191 mol/L CH3COOH(aq) at 25oC? Give your answer accurate to two decimal places. 2)Diethylamine, (C2H5)2NH, i
A 200 gram ball is attached to a string that is 1 m long and swung in a vertical circle. What is the minimum veocity of the ball so that the string will not slack at the top
A projectile is fired from the edge of a 10m high cliff at 10m/s and an angle of 30 degrees from the horizontal. what is the magnitude of the final velocity
A racecar starts from rest and accelerates to 100 km/hr halfway around a circular track of a radius 50 m. What is the magnitude of the acceleration of the car
Given the following equilibrium constants at 427 °C: Na2O(s) <=> 2Na(l) + 1/2 O2(g) Kc = 2 x 10-25 NaO(g) <=> Na(l) + 1/2 O2(g) Kc = 2 x 10-5 Na2O2(s) <=> 2Na(l) + O2(g) Kc = 5
A 2.0 L container is charged with a mixture of 6.0 moles of CO(g) and 6.0 moles of H2O(g) and the following reaction takes place: CO(g) + H2O(g) <=> CO2(g) + H2(g) When equilibrium is reached
A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.25 m/s2. What is the maximum height the rocket will reach above the launchpad
For the reaction CO(g) + H2O(g) <=> CO2(g) + H2(g), Kp = 0.64 at 900 K. If the reaction is initiated with just H2(g) and CO2(g), each at a partial pressure of 0.540 atm, what is the partial pr
For a 30 degree launch angle, the initial velocity(v0) is 3.12 m/s, the height at which the launcher is shot from has a height(h) of 1.17 m from the ground, Calculate angle the projectile makes with
consider two blocks of wood, one having mass of 1 kg and the other having a mass of 2 kg. What is the net force of the bottom block
1. Draw the mechanism for the methanolysis of 1-bromo-1-methylcylohexane 2. Draw a free energy diagram for the above reaction
A ball (m=1kg) is dropped from a height of 3 m. Assume no air resistance. After it bounces off the ground it only reaches a height of 2 m. What is the balls change in energy
How many theoretical stereoisomers are there for morphine, boron-phenylalanine, and lysergic acid diethylamide (LSD). What is the degree of unsaturation for each molecule
Calculate the number of moles of HCl that would be consumed by 1.0 g of NaHCO3
If 60mL of 0.1M CH3COOH is titrated with 0.2M NaOh, what will the pH be when: 1. Initial, before adding NaOH 2. 15mL of NaOH is added 3. 30mL of NaOH is added I worked the pH levels to 2.87, 4.74, a
What is the minimum concentration of ammonia that should dissolve AgBr to produce a 0.01 M Ag(NH3)2+ solution
Capital V will stand for Vbarr(molar volume) (P+(a/V^2))(V-b)=RT is the van der Waals equation and when it is solved for V you obtain cubic equation V^3-(b+(RT/P))V^2+(a/P)V-ab/P=0
Calcium hydroxide reacts with carbon dioxide to form calcium carbonate. The reaction for this process is: Ca(OH)2(s) + CO2(g) ? CaCO3(s) + H2O(g), ?H = -69.1 kJ What is the enthalpy change if 380 g