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For a speed of 45 m/s, at what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?
To reduce the solubility of benzoic acid in water to get it better portioned into diethyl ether, would it be better to add potassium carbonate or sodium chloride? Why?
A satellite has a mass of 5650 kg and is in a circular orbit 3.10 x 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.10 x 106 m. What is the tru
An electron starts from rest 76.5 cm from a fixed point charge with Q = -0.125 µC. How fast will the electron be moving when it is very far away?
What is Degradation? and what are some ways it is prevented? I did a cell fractioning experiment and I have to explain degradation and ways to prevent it?
A flask containing 5.oo mL of 3 M HCl solution requires 14.45 mL of1.00 M NaOH for titration. How many moles of HCL are present in the solution? The density of 3 M HCl is 1.05 g/mL.
How can you calculate an empirical formula if you are given the percent of each element present but not the molar mass?
An electron moving to the right at 9.0*10^5 m/s enters a uniform electric field also directed to the right. If the electron is to be brought to rest in the space of 6.5 cm, what is the strength of t
A 1480 kg car is traveling with a speed of 15.0 m/s what is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 43.5 m.
What compound would be formed if two molecules of salicylic acid under went esterification? Why is this not a major side reaction in the synthesis of methyl salicylate?
A roller coaster,traveling with an initial speed of 15 meters per second decelerates uniformly at -7.0 meters per second^2 to a full stop. Approximately how far does the roller coaster travel during
A 10.00 mL sample of H2SO4 is titrated with a 0.25M NaOH solution. Exactly 40.0 mL of NaOH is required to reach the end point. Calculate the molar concentration of the sulfuric acid. H2SO4
A singly ionized oxygen atom moves at 9300 m/s in a circular path perpendicular to a 0.80 T magnetic field. Find the radius and period of its circular motion. 1. Find the radius of its circular moti
Which spectroscopy technique is more useful, IR spectroscopy or UV-vis spectroscopy. What does does each one tells us?
200.0 L of a 0.200 M copper (II) chloride solution is reacted with 10.0 L of 3.00 M phosphoric acid and 2.850 kg of solid copper phosphate is produced.
Did something go wrong in the experiment? If the extracted unknown is impure, why does it's melting point have a narrow range?
Specify a diameter and a length that the wire can have. What volume of Nicrome is required to make this wire?
A 0.0500 kg cube of ice at an initial temperature of -15.0oC is placed in 0.600 kg of water at T= 45.0oC in an insulated container of negligible mass. A). Calculate the final temperature of the water
The rate constant, k for a given reaction was determine at a number of temperatures. aa graph of log k versus the reciprocal of the kelvin temperature yielded a straight line with a slope of -250k.
Assume the helium behaves like an ideal gas and the balloon's ascent is too rapid to permit much heat exchange with the surrounding air. a. Calculate the volume of the gas at the higher altitude.
A can of coke contains 39.0g of sugar. How much gasoline would contain an equivalent number of calories ? Explain in detail.
How many kilograms of steam will supply the same heat as was supplied by 1.00 kg of hot water in the first system?
An aspiring biochemist needs some help. He is a new technician and is learning about protein separation techniques. He has purchased some ferritin.
Consider a damped harmonic oscillator. After four cycles the amplitude of the oscillator has dropped to 1/e of its initial value. Find the ratio of the frequency of the damped oscillator to its natu
A certain sample of brine has 3.87% NaCl by mass. A 75.0 mL sample weighs 76.9 g. How many litres of this solution should be evaporated to dryness to obtain 725 kg NaCl?