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Hsolution for neutralization of HCl(aq) and NaOH(aq): Volume of HCl: 0.050 L Volume of NaOH: 0.050 L Volume total: 0.10 L Molarity of HCl: 1.99 M Molarity of NaOH: 1.99 M ?T for reaction B: 12°C
An aluminum sphere is 5.50 cm in radius. What is its volume expansion coefficient if it increases in volume 2.00 cm3 when heated from 100 oC to 151oC
List the following in decreasing order of strength (from strongest to weakest): hypochlorous acid, choric acid, perchloric acid, chlorous acid. Explain what trend in these oxoacids is making them pr
A diamond has a mass of 56.6 g and the gold ring it is set in has a mass of 125.6 g. How many carbon atoms are there compared to gold atoms
The suspension system of your 1200 kg car has a natural oscillation frequency of 2:00 Hz without functioning shock absorbers. find At what speed are you driving
A student is asked to prepare a buffer solution at pH = 8.60, using one of the following weak acids: HA (Ka = 2.7 X 10^-3) HB (Ka= 4.4X10^-6) and HC (Ka = 2.6 X 10^-9). Which acid should she choose?
A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9 x 10^7 m. If the satellite circles the planet once every 2.1 h in the larger orbit, what is the mass of the pla
Example on how to make up a buffer: A student has 100 mL of 0.1 M acetic acid and has plenty of 0.1 M sodium acetate and wants to make up a buffer with pH = 5.1.
2 students are titrating and started the titration at 30.0 mL. The buret was at 49.50 mL and the solution still had not chnaged to the base color. They stopped, now at 49.80 mL and refilled the bure
If a solution contains 0.01M Ca^2+, 0.01 M Zn^2+, and 0.01 M Ni^2+ ions and you want to separate them using aqueous (NH4)2C2O2, which ion will precipitate first as an ozalate, CaC2O4, ZnC2O4, or NiC
Planet A and Planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than Planet B. What is the ratio of their speeds
Calculate for the process ?G°, ?H°, ?S°, and DCp at 36.8oC (the ‘°' refers to the reference temperature of 36.8°C). Attach all work and a well labeled van't Hoff plot and e
Comet Halley has an orbital period of about 75 years. Determine the average distance of Comet Halley from the sun in AU
During normal beating, the heart creates a maximum 3.50 mV potential across 0.290 m of a person's chest, What is the wavelength of the electromagnetic wave
Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.)
A lamp is placed 10 cm in front of a concave spherical mirror that forms an image of the filament on a screen placed 3.0 m from the mirror. What is the radius of curvature of the mirror
two converging lenses, each of focal length 15.0 cm, are placed 40cm apart, and object is placed 30cm in front of the first. what is the magnification of the system
In a certain particle accelerator, a current of 0.5 mA is carried by a 5 MeV proton beam that has a radius of 1.5 mm. Find the power consumption of the accelerator
Calculate the wavelength in nm: a) a muon (a subatomic particle with a mass of 1.884 x 10^-25 g) traveling at 345 m/s b) an electron (me = 9.10939 x 10^-28 g) moving at 3.80 x 10^6 m/s in an electro
If a solution contains 0.01 M Ca^2+, 0.01 M Zn^2+, and 0.01M Ni^2+ ions and you want to separate them using aqueous (NH4)2C2O2, which ion will precipitate first as an oxalate, CaC2O4, ZnC2O4, or NiC
A circular conducting loop of radius 11.0 cm is located in a region of homogeneous magnetic field of magnitude 0.300 T pointing perpendicular to the plane of the loop. Calculate the magnitude of the
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
The radioactive hydrogen isotope 3H is calledtritium. It has beta-minus decay and a daughter necleus of 3He. What is the time constant for tritium
Projectile is fired with launch angle of 60.0 degrees with a speed of 100.0 m/s at t = 0. (assume no air friction), How far from the launch point does the projectile hit the ground
A projectile is shot from the ground at an angle of 55 degrees with respect to the horizontal, and it lands on the ground 5 seconds later. find the horizontal component of initial velocity