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If the enthalpy change for the reaction is 20 kJ/mol and the entropy change is 50 J/mol/K, the conversion of reactants to products is spontaneous above 400 K.
List the order of nucleotides in the DNA strand complementary to the section with the sequence [TTAGACGAC]. (2) How many codons does this represent?
A 4.00 g sample of an aluminum-copperalloy reacts with excess hydrochloric acid. The 2.81 L of H2(g) produced is collected over water at a barometric pressure of 758.4 mmHg and 19°C. What is the mass percent of aluminum in the alloy
A hot-air balloon has a volume of 875 L. What is the original temperature of the balloon if its volume changes to 955 L when heated to 56 degrees celcius
supposed the theoritical yield in a reaction is 68.8g, and the percent yield is 66.0%. What is the actual yield of product obtained?
The following compound has two stereoisomers. One has a dipole of 0 D, and the other has a dipole moment of 2.95 D. Draw the structure of the stereoisomer with dipole moment of 0 D.
Explain what happens to the atomic number of a nucleus when positron emission occurs
When most Fe^3+ salts are dissolved in dilute nitric acid, the solution is often yellow to orange-yellow in color. Why could you not visually detect these colors in Fe(NO3)3 stock solution
The solubility-product constant for Ce(IO3)3 is 3.2e-10. What is the concentration in a solution prepared by mixing 50 mL of O.0250 M Ce with 50 mL of 0.040 M IO3? Back of book has 7.0e-3 M
A solution is prepared from 0.95 grams of H3PO4 ,(Phosphoric acid) and 1.15 grams of HClO4 (perchloric acid) in 150 mili litres of solution then determine how many milliliters of 0.425 M sodium hydroxide( NaOH) is needed.
What is the difference between a common name, IUPAC name, a name in an international journal, and a name in an American journal? I understand how to do IUPAC names, but then I am confused at the rest.
Using information in Appendices B and C, calculate the minimum number of grams of C3H8(g) that must be combusted to provide the energy necessary to convert 3.25 kg of H2O from its solid form at -11.0°C to its liquid form at 70.0°C.
A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance.
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