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Explain how much heat is absorbed when 2.055 moles of NH3 (g) reacts in the presence of excess O2(g) to produce NO(g) also H20 (l) according to the following chemical equation. 4NH3(g) + 5O2(g) -> 4NO(g)+ 6H2O(l) Change of heat = 1168 kJ
Suppose that 27 g of each of the following substances is initially at 29.0 C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
In the reaction below, 1 atm of H2 and 6 atm of Cl2 were placed into a 1.00 L flask and allowed to react: H2(g) + Cl2(g) 2 HCl(g) Given that Kp at 800 K is K = 36, calculate the equilibrium pressure of HCl.
if a molecule of no diffuses a distance of 0.778 m from a point source calculate the distance m that a molecule of he
A certain second-order reaction ( B--> product) has a rate constant of 1.50×10?3 M-1*S-1 at 27C and an initial half-life of 214s. What is the concentration of the reactant B after one half-life
Carbon dating is a well-calibrated radiometric dating system used for items generally younger than 50,000 years old (14 C has a half-life of 5730 years). A recently unearthed Viking burial mound contained a ship, a sample of which was found to hav..
The Reaction 2NOCl(g)---->2NO+CL2(g) has rate-constant values for the reaction of NOCl of 9.3x10^-6/s at 350K and 6.9x10^-4/s at 400K. Calculate activation energy for the reaction. What is the rate constant at 435K?
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over
Calculate the pH of a 100.0 mL buffer that is 0.158 M HClO and 0.099 M NaClO after adding 1.0 mL of 5.9 M NaOH solution. (Ka for HClO given at 2.9*10^-8 and assume the volume change of added NaOH solution is negligible)
Gaseous ammonia reacts with oxygen gas to produce gaseous nitrogen monoxide and liquid water. If 750 grams of ammonia and 750 grams of oxygen gas were mixed
1. in the determination of the quilibrium constant for the hydrolysis of 5.00ml of sbcl3 24ml of water was addedand
A gas mixture composed of helium and argon has a density of 0.719g/l at a 743mmHg and 298k . What is composition of mixture by volume?
Which of the following isotopes is more likely to decay via positron emission rather than electron emission.
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