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Find emperical formula 0.25 mal of Iron atoms combined with 0.33 mal of O atoms. Find emperical formula
A soccer player kicks the ball toward a goal that is 23.0 m in front of him. Find the speed of the ball when the goalie catches it in front of the net
A swimmer, capable of swimming at a speed of 1.50 m/s in still water (i.e., the swimmer can swim with a speed of 1.50 m/s relative to the water), How long does it take the swimmer to cross the river
dinitrogen pentaoxide has 8.24 x10^20 molcules, how many gram of dinitrogen pentaoxide prsent
A tiger leaps horizontally from a 6.5 m high rock with a speed of 4.1 m/s. How far from the base of the rock will she land
Main group elements often attain a filled outer level (either eight electrons or two) by forming ions with the electron configuration of the nearest noble gas
Water is being pumped 100 meters up a hill through a hose at a rate of .012m^s/s. what is the water pressure at the bottom of the hose
A Carnot engine whose high-temperature reservoir is 400K takes in 520 J of heat at this temperature in each cycle, compute the temperature of the low-temperature reservoir
The mineral galena is composed of lead (II) sulfide and has anaverage density of 7.46 g/cm3.(a) how many moles oflead(II) sulfide are in 3.58ft3 of galena b. How many Lead (ii) atoms are in 1.99dm3
Copper (II) Iodate precipitates from iodate solution. The formula of the precipitate is Cu(IO3)2. A saturated solution of this substance was made in 0.01 M KlO3. The copper concentration was found t
Using a Time Domain Reflectometry (TDR) probe (rod length 30 cm) to estimate the soil water content of a wet sandy loam soil. alculate the volumetric wetness of the soil using the Topp and Davis (1985
A 10 nC point charge is at the center of a 2.0m x 2.0m x 2.0 mcube. What is the electric flux through the top surface of the cube
Write the chemical equation describing solubility equilibrium and the solubility product constant expression for Cu(IO3)2(s) and Ba3(PO4)2(s)
The mitochondrion has two membranes, the inner and outer- the outer membrane is porous and enables many molecules to freely diffuse. The inner membrane is different from the outer membrane as it is
the R isomer of limonene has an optical rotation, alpha,of +123 degrees the S isomer has an optical rotation, alpha, of -123 degrees. IF the observed rotation of a mixture of the R and S isomer resu
Coffee filters behave like small parachutes, with a drag force that is proportional to the velocity squared, Fdrag = Kv2. Find the time for the combined filters to reach the ground
Colligative properties are independent of the type of electrolytes in solution. suppose that in a solution system, a semipermeable memebrane is used to separate a sucrose-water solution from its pur
A small rigid object carries positive and negative 4.00 nC charges. It is oriented so that the positive charge has coordinates, Find the electric dipole moment of the object
In diving to a depth of 983 m, an elephant seal also moves 693 m due east of his starting point. What is the magnitude of the seal's displacement
Spiderman, whose mass is 70.0 kg, is dangling on the free end of a 12.6-m-long rope, the other end of which is fixed to a tree limb above. find How much work was done by the gravitational force on Sp
An airplane moves at 120 m/sec to the west with respect to the air. How fast does the airplane move
The mole fraction of nitrogen in a air is 0.78. If the total barometric pressure is 760 torr, what is the partial pressure of nitrogen
A box of books is initially at rest a distance D = 0.515 m from the end of a wooden board. Find the speed of the box as it reaches the end of the board
A hanging mass, M1 = 0.18 kg, is attached by a light string that runs over a frictionless pulley to the front of a mass M2 = 0.36 kg that is initially at rest on a frictionless table. Find the tensi
A sample of a fluorocarbon gas was allowed to expand to twice its volume. In this reversible, adiabatic expansion, the temperature dropped from 298.15K to 248.44K. assuming the gas acts ideally duri