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a.) For a bond between the same two atoms, which has the greatest bond enthalpy: single bond, double bond, or triple bond?
b.) Which has the shortest bond length?
Consider equal volumes (say 1 rm L) of a substance in the solid, liquid, and gas phases. Arrange them in order of decreasing mass. If the mass difference between samples is relatively small, rank the items as equivalent.
A sample of lead releases 221 kJ of heat when freezing. What is the mass of the sample? DHfus = 23 J/g
The relationship between Kp and Kc for gaseous reactions depends on the change in the total moles of gas between reactants and products. For each of the equations given at the right, select the correct relationship between Kp and Kc from the list ..
The aspirin componet weighs only 250mg. What is the w/w% aspirin inthe time release tablet?
If the average speed of an oxygen molecule is 4.43 multiplied by 104 cm/s at 25°C, what is the average speed of a CO2 molecule at the same temperature?
Write a balanced chemical equation for the standard formation reaction of gaseous hydrogen cyanide.
A student performs an extraction using water and methylene chloride. Which is the top layer and which is
Suppose that 23.2 mL of 0.410 M sodium chloride is mixed to 23.2 mL of 0.339 M silver nitrate. Determine how many moles of silver chloride would precipitate?
1 liter of sodium carbonate 0.4 M is added to 1 liter HCl 0.3 M what is the excess material and how many moles remains?
Write a Lewis structure for each of the following molecules.
Provide the name and structure of an herbicide not structurally related to those in this experiment, and indicate how the herbicide works
Calculate the pH of a buffer solution made by adding 10.0g of anhydrous sodium acetate (NaC2H3O2) to 100 ml of 0.100M acetic acid.
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