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A piece of wood found in an archaeological dig has carbon-14 activity of 5 counts per minute (cpm). New wood has a cpm of 40. The half-life of carbon-14 is 5730 years? What is the age of the wood?
At -260 ?C the density of solid hydrogen is 0.0763 g cm-3.
Use the values in Appendix D of your text to calculate Ka to four decimal places for the hydrogen sulfate ion at 25 °C. (The answer in my Chem II text is 0.012.) HSO4-(aq) SO42-(aq) + H+(aq) Ka = ?
1. Identify 4 differences between expert-driven health care and evidence-based healthcare.
Calculate and record the following for the experiment performed with 20g KClO. mass of the crucible with manganese(IV) dioxide (in grams): 54.200g
Eugenol can also be isolated from cloves using extraction with CO2. discuss the advantages and disadvantages of distillation versus CO2 extraction.
What is the pH at the equivalence point? the Ka of hydrofluoric acid is 3.5x10^-4.
Draw and label the flowchart and show the degree of freedom analysis for the overall process, the split point, the treatment unit, and the mix point.
What is the specific heat of titanium in J/(g. oC) if it takes 89.7J to raise the temperature of a 33.0g block by 5.20 oC? What is the molar heat capacity of titanium in J/mol . 0C)
Write the correct equation for the reaction resulting from the mixture of 0.01 mols pure sulfuric acid with 0.01 mols sodium cyanide forming a crystalline solid among the products
Compute deltaS values for the subsequent reactions by utilizing tabulated So values from Appendix C. (a) Cl2(g) + H2(g) 2 HCl(g) So deltaS = J/K (b) Be(OH)2(s) BeO(s) + H2O(g) So deltaS = J/K (c) SO2(g) + 1/2 O2(g) SO3(g) So deltaS = J/K (d) NH3(g..
In the fish processing industry, the fish cake is dried in rotary drum dryers. The fish cake consists of bone dry fish (BDF) and water. The resulting product is finely ground as well as packed for sale.
Find the total time in minutes for a class that lasted 2.76 hours, 353 minutes and 45,980 seconds. Please show me every step.
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