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n = 3.60 mol of Hydrogen gas is initially at T = 340 K temperature and pi = 3.32×105 Pa pressure, How much entropy did the gas emit
What is the enthalpy change associated with the formation of 0.58 mol H2O in the following reaction? CH4 + 2O2 ---> CO2 + 2H2O change in heat is 890.3 Kilojoules a. 516 b. 258 c. -1530 d. -258 e.
A sprinkler mounted on the ground send out a jet of water at 30 degrees angle to horizontal. How far does the water travel before it hits the ground
Although the actual process also requires water, a simplified equation for rusting (rust is shown as Fe2O3) is 4Fe(s) + 3O2(g) => 2Fe2O3(s) ?Hrxn = -1.65 x 103 kJ How much heat is evolved when 0.
a ball is thrown horizontally from a 20-m-high building with a speed of 5.0 m/s , Make a sketch of the balls trajectory
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 5,284kJ of heat is needed from the combustion, how much carbon (g) must
A concave spherical mirror has a radius of curvature of 7.00cm. Calculate the size of the image
use any resources available to you to find the structures of these drugs and then identify the functional group or
A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 99 m/s. Find the maximum altitude reached by the rocket
Three resistors having resistances of R1 = 1.74? , R2 = 2.57? and R3 = 4.83? respectively, Find the voltage across each resistor
calculate the molar heat of combustion of liquid methanol . a. -8.17 x 105 kJ/mol b. -817 kJ/mol c. 1.88 kJ/mol d. -0.8 kJ/mol e. none of the above
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.9m, What is the magnitude of the net displacement of the mouse
At high temperature, ammonia reduces copper(II) oxide to the free metal: Step 1: 2NH3(g) + 6CuO(s) => N2(g) + 3Cu2O(s) + 3H2O(g) Step 2: 2NH3(g) + 3Cu2O(s) => N2(g) + 6Cu(s) + 3H2O(g)
As you walk across a synthetic-fiber rug on a cold, dry winter day, you pick up an excess charge of -56?C, What is the charge on the rug as a result of your walking across it
A rocket is launched at an angle of 58.0�° above the horizontal with an initial speed of 102 m/s. Find the maximum altitude reached by the rocket
Give the balanced equation for the reaction: formation of 1 mol nitrogen dioxide from its elements (heat is absorbed)
The arrangement is, in effect, a hollow tube of current 2.1A. find the magnetic field outside the cylinder
Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions. Zn^2+ (aq) + Sn(s) --> Zn(s) + Sn^2+(aq) Al^3+ (aq) + 3Na(s) --&
A fireman d = 46.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of θi = 38.0°, at what height will the stream of water st
Complete and balance the equation for this reaction in acidic solution. ZnS + NO3^- -> Zn^2+ + S + NO Which element was Oxidized. Which element was reduced ? Which species was the oxidizing agent
A copper cylinder and a brass cylinder are stacked end to end, as in the drawing. Find the amount by which the length of the stack decreases
One of the most common causes of inaccurate melting points is too rapid heating of the melting point apparatus near Tmelt. Under these circumstances, how will the observed melting point compare to t
A 210g ball is dropped from a height of 1.8m and bounces on a hard floor. How high does the ball rebound
Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. Determine the acceleration (magnitude and direction) of the man
In analysis of interhalogen activity, 0.110 mol of ICl was placed into a 1.00 L flask and allowed to decompose at a high temperature: 2 ICl(g) <=> I2(g) + Cl2(g) Given that Kc = 0.361, calcula