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The DNA molecule consists of two parallel strands. The atoms within each strand are held together by ____________. The two strands are joined together by ____________.

Liquids with strong intermolecular forces have: (CHOOSE ALL THAT APPLY—on this exam multiple answers are possible for this question and only questions which state that this is so.)

How many neutrons are in a 100 mg sample of fluorine gas composed entirely of the most common isotope of fluorine?

Which has the smallest bond angle?

How many hydrogens are found in one glycine zwitterion?

When ΔG is 0, the reaction

When 20.0 mL of aqueous sodium chloride is mixed with 50.0 mL of 0.10 M silver(I) nitrate, silver(I) chloride precipitates. After the precipitation, no chloride ions or silver ions are found in the solution. What was the original concentration of chloride ion in the 20-mL solution?

For the exothermic reaction 2NO2 = N2O4 the entropy change for the system is ________, for the surroundings is ________, and for the universe is ________. The entropy change for the ________ must be greater than for the ________.

Use the following heats of formation to calculate the enthalpy change for the reaction in which 2 mol of ethene react with hydrogen to form ethane.ΔH°f(ethane) = -85 kJ/molΔH°f(ethene) = 50 kJ/mol

The nurse is ambulating a client who begins to fall. To prevent or minimize damage from this fall, the nurse would