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What is the net ionic and ionic equation of ferric chloride + sodium hydroxide?
(a) How high above the ground is the highest point that the skateboarder reaches? (b) When the skateboarder reaches the highest point, how far is this point horizontally from the end of the ramp?
After heating & cooling a 2.752-g sample of this unknown weighed 1.941 g. Could the unknown possibly have been Sr(NO3)2*4H20? Briefly explain & What is the probable identity of the student'
A boy whirls a stone in a horizontal circle 2.0 m above the ground by mean of a string 1.5 m long. The string breaks, and the stone flies off horizontally and strikes the ground 10 m away. What was
Describe the metallic bonding with the help of valence bond theory.
When sulfuric acid is a component of polluted air, it chemically attacks statues, memorials, and monuments made from limestone. Given that the most common mineral in limestone is calcium carbonate,
You are hanging on to the edge of a merry-go-round, and must exert a force of 100 N to hang on. If the speed of the merry-go-round doubles, how much force will you need to exert to hang on?
A raft is made of 11 logs lashed together. Each is 35 cm in diameter and has a length of 5.6 m. How many people can the raft hold before they start getting their feet wet, assuming the average perso
What is the minimum concentration of {rm{OH}}^ - required to dissolve 2.0×10-2 mol of {rm{Zn(OH)}}_2 in a liter of solution?
The following reaction has achieved equilibrium. Predict the effect on the formation of phosphorous pentachloride (increase, decrease or no effect) for the stated changes to the system:
A 952 cm3 container of gas is exerting a pressure of 108 kPa while at a temperature of 48 oC. Calculate the pressure of this same amount of gas in a 1236 cm3 container at a temperature of 64 oC
(a) what magnitude F is required for the force, (b) what distance d do they travel while slowing, and (c) what work W is done on them by the force? What are (d)F, (e)d, and (f)W if they, instead, sl
The temperature of a lead fishing weight rises from 26 degrees Celsius to 38 degrees Celsius as it absorbs 11.3 J of heat. What is the mass of the fishing weight in grams?
What is the volume occupied by 0.265mol of helium gas at a pressure of 1.28atm and a temperature of 307K?
David is driving a steady 24.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70m/s^2 at the instant when David passes. How far does Tina drive be
A space traveler weighs 545 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
Which of these events, if any, could explain this result? (Assume that gas is not leaking out of the piston and that the measurements of pressure and volume are accurate.)
Compound B, a gaseous organic compound that consists of 85.6% carbon and 14.4% hydrogen by mass, is placed in a stainless steel vessel (10.68 L) with excess oxygen gas. The vessel is placed in a con
Estimate the minimum coefficient of static friction needed between a car's tires and the pavement in order to complete a left turn at a city street intersection at the posted straight-ahead speed li
A 0.536 g sample of a metal nitrate salt, M(NO3)2, contains 0.0171 mol of oxygen atoms. Determine the atomic weight of M.
One cart of mass 15kg is moving 5 m/s to the right on a frictionless track and collides with a cart of mass 3kg. The final velocity of the carts that become stuck together after the collision is 1.5
Find the mass of a projectile when fired at 275 m/s if it is to have the same momentum as a 145 g projectile that is fired at 325 m/s
A driver in a car traveling at a speed of 78 km/h sees a cat 101m away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 99m?
Your goal is to determine whether the rocket hits the other building. If it falls short or goes over, determine where it lands. If it hits the building, determine the height of the impact.
How manny kilograms of chalcopyrite (cufes2). how manny kilograms of chalcopyrite must be mined to obtain 420. g of pure Cu?