Physics
A basketball is shot from an initial height of 2.4 m with an initial speed (v0 = 12 m/s) directed at an angle (35 degrees) above the horizontal. Additional information: Height of the basket is 3.05 m
Chemistry
1. The reaction, CO(CH2COOH)2 CO(CH3)2 + 2CO2, follows first-order kinetics and has an activation energy of 96.6 kJ mol-1. At 293 K, k = 0.133 s-1. Find the temperature (in K) at which half-live will be 0.00692 min? Round your answer to 3 significant figures. Okay so i tried c...
Chemistry
the answer is suppose to be 2.38 min
Chemistry
?? and then what do you do? .0000354 = 0.693/t(1/2) t(1/2) = 19576.27119
Chemistry
The given reaction, 2N2O5 4NO2 + O2, follows first-order kinetics and has an activation energy of 103 kJ mol-1. At 298 K, k = 0.0000354 s-1. What is the half-life (min) for this reaction at 338 K ? Round your answer to 3 significant figures.
Chemistry
1. What is the pH of the solution created by combining 0.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? 2. What are the pH values if you take into account that the 8.00 mL of 0.10 M Acid was first diluted with 100 mL of...
Chem
Ohh. I just tried a similar problem and used the equilibrium way and it was right... Thank you so much for your help!
Chem
Does the .00263 come from antilog (-2.58)? If so, I plugged it into my calculator and got .00275. That was the method I initially used (.00275^2)/.0159 and I got 4.35 x 10^-4 but that answer was wrong. The answer is suppose to be 5.21 x 10^-4. Thank you for trying though. =]
Chem
Estimate the equilibrium constant for the weak base (CH3)2NH, if a 1.59×10-2 M aqueous solution of (CH3)2NH has a pOH 2.58 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (CH3)2NH + H2O = (CH3)2NH2+ + OH- I k...
Chemistry
If the initial pressure of NH3(g) is 0.7317 atm, calculate the % of NH3(g) left over after the reaction reaches equilibrium according to the balanced equation. The value of Kp at 500.0 °C is 67100.00. The initial pressure of the reaction products is 0 atm. 2NH3(g) = N2(g)+...
For Further Reading
