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A 20kg box is on a level surface pressed against a spring compressed 25cm and with k=1000 k/m. How far does the box go up the hill
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal place
When spiking a volleyball, a player changes the velocity of the ball from 4.0m/s to -28m/s along a certain direction. what is the mass of the volleyball
In a typical golf swing, the club is in contact with the ball for about 0.0010 s. estimate the magnitude of the force exerted by the club on the ball
Calculate the theoretical yield in grams of the precipitate formed. 3. If the actual yield of the experiment was 90.5 mg, what is the % yield of Ag3PO4
A 100-kg object and a 400-kg object are separated by 4.20 m. Find the magnitude of the net gravitational force exerted by these objects on a 64.0-kg object placed midway between them
you are handed an apple that has a mass of 102g. to get a better of idea of what different pressure feel like, what is the pressure of the apple
Both of the sulfur-oxygen double bonds in SO_2 are polar. In which direction should the polarity arrows point? Both of the sulfur-oxygen double bonds in are polar.
The average density of the planet Saturn is 688 kg/m3. The acceleration of gravity on its surface is 11.20 m/s2. Calculate the average radius of Saturn
Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide,H2O2 , can be titrated against a solution of potassium
The titration of a 25 ml sample of 0.110 M HC2H3O2 with 0.130 M NaOH. Determine the following? the initial pH, the volume of added base required to reach the equivalence point
To an insulated container with 100.0 g H20 (l) at 20.0 C, 175 g steam at 100 C and 1650 g of ice at 0.0 C are added. A) What mass of ice remains unmelted after equilibrium is established
A student determined the calorimeter constant of the calorimeter. The student added 50.00 ml of cold water to 50.00 ml of heated distilled water in a Styrofoam cup the initial temperature pf the col
A parallel-plate capacitor with plates of area 580 cm2 and is connected across the terminals of a battery. What is the magnitude of the charge on each plate
What was the molarity of the KOH solution if 23.2ml of 1.50 M H2SO4 was needed? The equation is 2KOH(aq) + H2SO4(aq)----->K2SO4(aq) + 2H2O(l)
A white billiard ball with mass mw = 1.49 kg is moving directly to the right with a speed of v = 3.06 m/s, What is the final total energy of the system
What factors determine if a compound will undergo solvolysis. Out of two compounds how would you be able to determine which one would undergo solvolysis the quickest
A van is moving with a constant acceleration, a0, up a hill that makes an angle ? with the horizontal. what is the acceleration of the van
A string under tension of 50.0 N is used to whirl a rock in a horizontal circle of radius 2.5 m at a speed of 20.4 m/s on a frictionless table. What is the breaking strength, in Newtons, of the strin
Carbon from the most recent remains of an extinct Australian marsupial, called Diprotodon, has a specific activity of 0.61 pCi/g. Modern carbon has a specific capacity of 6.89 pCi/g. How long ago di
Two particles with masses 2m and 5m are moving toward each other along the x axis with the same initial speed, Find the final speeds of the two particles after the collision
A heavier mass m1 and a lighter mass m2 are 20.0 cm apart and experience a gravitational force of attraction that is 9.00 10-9 N in magnitude. Determine the value of each individual mass
Cl2 is one of the seven diatomic elements H2SO4 is sulfuric acid and has the sulfate ion with neg 2 charge CH4 is a methane molecule is organic and covalent GeCl4 Germanium tetrachloride which is io
Starting from rest, a 12 cm diameter compact disk takes 2.4 s to reach its operating angular velocity of 1925 rpm. How much torque is applied to the disk
Any help on how to do or start this problem? Suppose the gas above the soda in a bottle of a soft drink is pure CO2 at a pressure of 2 atm. a. Estimate the pH of the soda. b. Calculate CT, the total