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Flourine gas reacts with ammonia gas to form N2F4 and HF. How many grams of NH3 are required to form 130 grams of HF?
A 5.50 bullet is fired horizontally into a 1.30 wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.200. The bullet remains embedded in t
Why does adding 6 M HCI to the yellow solution of methyl orange tend to cause the color to change to red? (Note that in solution HCI exists as H+ and Cl ions.)
Above that are the mantle and crust. if the average density of the Earth is 5.5 g/cm^3, what is the average density of the Earth's mantle and crust?
What is the root mean sqaure velocity of an sulfur molecule at 275 degrees?
when you heat popcorn, it pops because it loses water explosively. Assume a kernel of corn, weighing 0.125 g, weighs only 0.106 g, after popping. Calculate the percentage of water in the kernel of c
Write a350- to 700-word essay in which you compare and contrast the influence of heredity and hormones on human behavior.
Write a Literature review on application of geophysical techniques using electromagnetic induction as a tool for sustainable soil and water management of agricultural fields in the humid tropic Car
Determine the voltage produced by a galvanic cell composed of two aluminum electrodes, one in 0.10 M Al(NO3)3 and the other in 0.50 M Al(NO3)3.
In gluconeogenesis, the second pathway we will study this semester, the enzyme fructose-1, 6-biphosphatase hydrolyzes fructose-1, 6-biphosphate to fructore-6-phosphate and Pi. What is the free energ
A 1.6 kg softball is pitched to you at 38 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in contact with the ball for 0.1 s, the magnitude of the average forc
What was the upward force of the air resistance while the coffee filter was falling at terminal speed?
Which of the following statements is true about the following reaction? 22.4 L of CO (g) are produced for every liter of C H O (aq) reacted.
Displace the block to the side and give the block an initial velocity in a direction out of the plane defined by the equilibrium position, the support point and this initial position (recall that th
At 200°C, in the reaction below, the molar concentration of A was 7.02 M after 1.03 s and 1.84 M after 7.86 s. What is the average rate of reaction in M/s?
A Federation starship (1.90×106 kg) uses its tractor beam to pull a shuttlecraft ( 2.10×104kg ) aboard from a distance of 13.0 km away. The tractor beam exerts a constant force of 4.0*10
What is the polar Lewis dot structure of C2H2Br2
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 directed at an angle of 37.0 below the horizontal and the chair slides
Estimate the pH at the equivalence point of an HOAc solution if 25.5 mL of this solution required 37.5 mL of 0.175 M NaOH to reach the equivalence point (Ka = 1.8 x 10-5).
An experiment is done where the AAUCCC RNA template on the telomerase is mutated. Will there be a change in the telomeric sequence as a consequence of this mutation? Explain
You drop a single coffee filter of mass 1.7 grams from a very tall building, and it takes 52 seconds to reach the ground. In a small fraction of that time the coffee filter reached terminal speed.
Calculate the concentrations of all species in a 1.08 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
A 1.00 qt metal can contains 0.150g of He at a temperature of 20 degrees celsius. What is the pressure (in atm) inside the can? Is this pressure greater or less than standard atmospheric pressure.
You have discovered a drug that inhibits the activity of the enzyme inorganic pyrophosphatase (do you recall what is the functi of this enzyme?). What effect would this drug have on DNA synthesis?
A car travels 40 kilometers at an average speed of 80 km/hr and then travels 40 kilometers at an average speed of 40 km/hr. the average speed of the car for this 80 km trip is: