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An olympic jumper leaves the ground at an angle of 23° and travels through the air for a horizontal distance of 8.7m before landing. What is the take off speed of the jumper?
What fundamental thermodynamic variable is directly related to the voltage measured in electrochemical cells? Discuss in detail.
If a projectile has a launching speed of 18 m/s at an angle of 43° above the horizontal, What is the highest barrier the projectile can clear?
A bullet is fired from a rifle that is held 1.6m above the ground in a horizontal position. If the initial speed of the bullet is 1200 m/s, determine the time it takes for the bullet to hit the grou
What is the separation between the two cars when your attention finally returns?
A 240 mL juice sample has 60 mg of absorbic acid, if it takes 30 mL of titrant to oxidize 4.8 mg of absorbic acid, how many mL of juice should be titrated to use 30 mL of titrant?
Write the equilibium expression for the reaction. If Kc was approximately 1 how many chemical species would be found in the solution?
Calculate the work done by the spring when it is stretched from its equilibrium position to 0.056m past its equilibrium. Answer in units of mJ.
What would be the molarity of a solution obtained when 50 ml of3.00M HCL acid solution is mixed with 70ml of H2O?
What is the potential difference between the points at x = 0 and x = xmax?
Describe what would happend if a hot saturateed solution was filtered by vaccum filtration using Buchner funner at room temperatue.
What average force does the bullet exert on the target?(N)
Suppose you dissolve 50 mg of ascorbic acid (M=176.124g/mol) in water in a 100 mL volmetric flask. then you remove a 10.0 mLa liquot of the solution, put into a beaker, and add 20 mL water and10 mL
Decomposition of dinitrogen pentoxide to nitrogen dioxide and oxygen follows 1st order kinetics and has an activation energy of102 kJ/mol.
A flame test on NaCl produces an intense orange-yellow color. A sodium vapor street lamp (using elemental sodium) produces the same color.
If you suspect a chemical used in the lab might be carcinogenic, what definitive written source of info is availible in the lab to look it up?
Based on the structures of Aspirin and Acetaminophen, why might aspirin be more likely to cause an upset stomach?
A proton is fired from far away toward, the nucleus of a mercury atom. Mercury is element no. 80. If the initial velocity of the proton is 4x107m/s, what is the distance of closet approach to the nu
6.32 g of potassium chlortae reacts according to the following equation : 2 KClO3 -> a KCl + 3 O2 Determine the quantity of oxygen produced by the reaction as amass and as a volume at a 105 kPa a
Protons in a linear accelerator are accelerated through a potential difference of 400,000 volts. What is the velocity of the protons after being accelerated?
A uniform magnetic field of magnitude 0.30 T is directed perpendicular to the plane of a rectangular loop having dimensions 8.2 cm by 15 cm. Find the magnetic flux through the loop.
The reactivities of phenol and aniline toward bromination change when the reaction is performed in sulfuric acid rather than aceticacid. Explain why?
A 0.10kg dart is fired horizontally at the center of a 0.80kg vertically hanging block, sticking to it. The system reaches a maximum height, h, of 0.20m above the collision point. Find: a) the velo
Write an equation for the Aldol reaction that takes place for the aldehyde. Show the exact structures for aldehyde and product (not general structures with "r" groups)
Calculate the solubility of zinc hydroxide, Zn(OH)2, in 1.00 MNaOH. Ksp = 3.0 x 10^-16 for Zn(OH)2, Kf = 3.0 x 10^15 for Zn(OH)42-