is D2 radioactive?
what is the molar mass of mercuric nitrate
Why is pentadiene more acidic than pentane?
3. Using the bond energies below, determine the value and sign of H for the Reaction: 2H-Br + F-F 2H-F + Br-Br Bond energies in kJ/mole: H-Br 362.3 H-F 565 F-F 154.8 Br-Br 190.0 4. When...
ideal gas particles are assumed to be volumeless and to neither attract nor repel each other. Why are these assumptions crucial to the validity of dalton's law of partial pressure
explain why adding excess (PO4)3 will cause a more complete precipitaion of Ca3(PO4)2.
about 88 percent of geologic time is represented by the time span called the ________.
rank the following four compounds from the most reactive to the least reactive in order of their reactivity toward electrophilic aromatic substitution: benzene, bromobenzene, benzaldehyde and aniline
Ksp for PbCrO4 at 25oC is 2.0 x 10-14. A sample of 1.000 mg of PbCrO4 is added to 1.0 L of water at this temperature. 1. How many milligrams of PbCrO dissolves? 2. how many milligrams of PbCrO remains undissolved?
Calculate the molar solubility of AgI in pure water.
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- 1. For organic chemistry, what is a concerted shift? How do things like acids or heat affect them? What other factors affect them?
2. Which of the following reactions is an acid-base neutralization reaction? Why are the rest of the answers incorrect?
- A. AgNo3 (aq) + NaI (aq) --> AgI (s) + NaNO3 (aq)
- B. S8(s) + 8O2 (g) --> 8SO2(g)
- C. Na3PO4 (s) + 2H2O (l) --> H2 (g) + 2NaOH (aq)
- D. Ca (OH)2 (aq) + 2HI (aq) --> CaI2(aq) + 2H2O (l)