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1. If it takes 20 Joules of energy to change 5 grams of a substance from 20 C to 25 C, what is the specific heat?
What is the wavelength (in nanometers) associated with a photon which has an energy content of 4.86E-24 kJ
Calculate the pH of 2.00L of buffer made u of 1.00 mole of sodium acetate and 1.00 mole acetic acid before and after the addition of 0.10 mole of NaOH. Assume there is no change in volume when NaOH is added
Use values of ksp and kf for copper (II) hydroxide and its complex to predict if a precipitate should form in a 0.1 M Cu2+ solution that is 3M in OH-
Can someone please answer these questions regarding the endo and exo products formed through two different transition states in the reaction between furan and maleic anhydride.
question 1what is a chemical transformation of waste?question 2a.list the problems associated with incineration of
Circle the compound in each pair that you would predict to be more soluble in water. Give a very brief explanation for your choice. a. Nitrogen gas or Hydrogen fluoride gas b. Quartz crystal or (NH4)2SO4 crystal
A sample of carbon dioxide gas occupies 617 mL at 0.812 atm and 11?C. What will the pressure be at a volume of 717 mL and a temperature of 16?C?Answer in units of atm
Dinitrogen pentoxide, N2O5, decomposes by first-order process with a rate constant of 3.7 x 10-5 s-1 at 298K. a) What is the half-life in hours for the decomposition of N2O5 at 298 K
Drinking water in the USA cannot exceed 0.5 ppm mercury. What mass of mercury is present in 2.4 L of water at this concentration
A gas has a volume of 10 L at 0 degrees C. What is the final temperature of the gas in C if its volume increases to 27 L? Assume that amount of the gas and its pressure remain unchanged.
The isomerization of cyclopropane follows first-order kinetics. The rate constant at 700. K is 6.20 × 10-4min-1, and the half-life at 760. K is 29.0 min. What is the activation energy for this reaction? (R = 8.314 J/mol• K)
Acid Mixture Problem, From a full 50-liter container of a 40% concentration of acid, x liters is removed and replaced with a 100% acid.
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