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Why does BrO2 have a free radical? explain the bonding that happen, and why it happens. Why does NO have a free radical? I know it's because there in one unpaired electron
Two protons are moving directly toward one another. When they are very far apart, What is the distance of closest approach
When the brakes of a certain car are applied, a deceleration of 6.0 m/s^2 is produced. How far will it travel in that time
A reaction has a standard free-energy change of -12.30 kJ mol-1 (-2.940 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
Oppositely charged parallel plates are separated by 4.79 mm. How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.06 mm from the positiveplate
The air in the ducts flows at 5.0 m/s, find the width of the ducts. (b) How big would the ducts need to be if the owner wanted the air to flow at 1.0 m/s
A fire truck attaches two fire hoses to a hydrant to fight a fire. Each hose has a diameter of 20 cm. The underground water pipe going to the hydrant has a diameter of 100 cm. In the underground pip
A potential difference of 100 mV exists between the inner and outer surfaces of a cell membrane. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell
At a certain instant a particle (mass=0.5 kg) is moving in the +x direction with velocity 14 m/s. What is the magnitude of the momentum of the particle (in kg*m/s) at the end of this 0.15 second in
Write a balanced equation between citric acid (RCOOH) and sodium hydrogen carbonate
A uniform electric field of magnitude 415 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
The confirmation test for Ag^+ is to add HNO3 to the [Ag(NH3)2] ^+ and see if a precipitate of AgCl forms. Where does the Cl ^ - come from. Why does adding HNO3 make AgCl precipitate
Assume that the sun radiates as a blackbody , if Lp=5000A for the solar spectrum, what is the surface temperature of the sun
suppose the driver in this example now slams on the brakes, stopping the car in 4.00s. find the acceleration and the distance the car traveled while braking
using planck's law, Evaluate the Stefan-Boltzmann constant and Evalute the constant in the wien displacement law
Four charges of equal magnitude Q = 65 nC are placed on the corners of a rectangle of sides D1 = 25 cm and D2 = 10 cm. calculate the numeric value for the vertical force
A swan can float on a lake with only 33% of its volume below the surface. What is the average density of the swan
Two capacitors give an equivalent capacitance of 10.00 pF when connected in parallel and an equivalent capacitance of 1.55 pF, What is the capacitance of each capacitor
The gravitational force exerted on a solid object is 5 N. When the object is suspended from a spring scale and submerged in water, the scale reads 3.5 N. What is the density of the object
When a mass is suspended from a spring, the equilibrium length is increased by 50mm. Find the period and amplitude of the resulting oscillations
A bartender slides a beer mug at 1.6 m/s towards a customer at the end of a frictionless bar that is 1.6 m tall. What are the speed and direction of the mug at impact
The eardrum can rupture with as little as 35 kPa of pressure difference across it. What is the depth at which this pressure difference could occur
A gas is kept at constant pressure. If its temperature is changed from 15 to 145°C, by what factor does the volume change
A car is driving directly north on the freeway at a speed of 101 km/h and a truck is leaving the freeway driving 90 km/h in a direction that is 34° west of north
A tank with a flat bottom of area A and vertical sides is filled to a depth h with water. The top of the water is at atmospheric pressure. (a) What is the absolute pressure at the bottom of the tank