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A container filled with 3.47 kg of water underwent a temperature change from 23.20 oC to 28.42 oC. How much heat, measured in kilojoules, did the water absorb? (The specific heat of water is 4.18 J g-1 oC-1).
What statement below best describes the graph representing the integrated 1st order rate law plot of ln[a] vs t having a straight line negative slope equal to -k
Buffering Action of Proteins, We did this experiment in class but I want to see if the results seem reasonable and, if so, why they were not more varied.
a tank contains helium at 490 mmHg, nitrogen gas at 0.750 atm, and neon at 520 torr. what is the total pressure in atm?
30 g of steam at 100ec condenses and drops to a temperature of 70ec. how much energy is needed to cool the liquid water
A buffer contains 0.16mol of propionic acid (C2H5COOH) and 0.17mol of sodium propionate(C2H5COONa) in 1.20 L. 1)What is the pH of this buffer?
heating oil is circulated in a circular conduitat an average velocity of 0.30 ms. the diameter of the conduit is25 cm.
Complete and balance the following equations, and identify the oxidizing and reducing agents. Recall that the O atoms in hydrogen peroxide, H2O2, have an a typical oxidation state.
Determine the frequencies that hydrogen atoms emit in transitions from n = 6 and n = 5 levels to the n = 3 level. For the H atom, En = -2.18E-18(1/n2) J.
the reaction that would occur between HCL and NaHCO3 using curved arrow notation. Show all nonbonded electrons.
Using what you know about acid/base chemistry, determine the immediate effect that two 325-mg aspirin tablets would have on the pH of the stomach. Assume your stomach is half a liter in volume.
1.Which contains the most atoms of chromium? 0.025mol,6.0*10^21 atoms, or 1.5g of Cr?
Calculate the amount of N2 gas released (in liters at 37°C and 1.5 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
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