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How can you tell from the information provided with the balanced equation. How many mol of O2 are required to form 3.20 mol Fe2O3. How much heat is exchanged when 14.3 kg of iron rusts
On a laboratory air table, a puck moving due north at 3.5 m/s collides with an iddentical puck moving at 2.0 m/s, 45 degrees S of W. What is the speed and direction of the second puck
A 3-kg sphere makes and inelastic collinsion with a second sphere initially at rest. What is the mass of the second sphere
A thin lens has a focal length of 10 cm. An object is located 15 cm to the left of the lens. What is the total magnification of the lens system
Determine the equivalent acid-base equilibrium that results when each of the following pairs of solutions is mixed. 25.0 mL of 0.50 M NaOH + 12.0 mL of 1.50 M HCl Pick two initial conditions from fi
An object of mass m= 1.00 kg is moving initially with a speed of 2.0 m/s along positive x- direction, Determine the speed and direction of motion of second object
How kinetic energy is related to linear momentum and What is the difference between elastic and inelastic collisions
Organic hydrogenation reactions, in which H2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries.
A 3.00 kg steel ball strikes a massive wall at 10.0 m/s at an angle of ? = 60.00 with the plane of the wall. what is the average force exerted by the wall on the ball
A thin film of oil (n = 1.29) is located on smooth, wet pavement. What is the minimum thickness of the oil film
A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s)-----> 2 Hg(l) + O2(g) delta H rxn = 181.6 kJ (a) How much heat is needed to decompose 505 g o
When 26.0 mL of 0.675 M H2SO4 is added to 26.0 mL of 1.35 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and K
An object is to the left of a thin lens. The lens forms an image on a screen that is 2.60 m to the right of the object. Is the image upright or inverted
The heat capacity of the coffee cup (without the water) is 9.2 J/K. If the final temperature of the system is 31.1°C, what is the specific heat capacity of the alloy? (c of water is 4.184 J/g&ti
Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the calorimeter
A narrow beam of sodium yellow light with wavelength 589 nm in vacuum, Determine the wavelength of the light in water
Five structural isomers have the formula C6H14. Where needed, draw the structure and give the IUPAC name of all five isomers
Find the final velocity of the two balls if the ball with velocity v2i = ?21.4 cm/s has a mass equal to half that of the ball with initial velocity v1i = +25.8 cm/s
A 28.7 g sample of ethylene glycol, a car radiator coolant, loses 652 J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.
A sinusoidal voltage ?v = (60 V) sin (130t) is applied to a series RLC circuit with L = 90 mH, C = 175 ?F, and R = 34 ?. Whats the maximum current in the circuit
An oxyacetylene flame is often used in the welding of metals. Estimate the flame temperature produced by the reaction. 2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(g) Assume the heat generated from this
A proton with an initial velocity of (1.0x + 2.0y+ 3.0z) xe5 m/s enters an magnetic field of 0.5zT. Find the radius of the resulting helix
The equilibrium constant, Kc, for the reaction at 25 C is 170. Suppose 15.6 g of N2O4 is placed in a 5.000-L flask at 25C. N2O4 (g) ---> 2 NO2 (g) Calculate the following
A pendulum is made by tying a 550g ball to a 52.0cm -longstring. To what angle does the pendulum swing on the other side
a stell ball of mass m suspended by a thread of lenght l. the ball is then released when the thread is horizontal. at the bottom of this path, find the speed of the block just after collision