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If you are told that the purity of compound Z is 92% as well as the reported value for its molar extinction coefficient is 45000 M -1 cm -1 at 605 nm. Explain what should you measure as the e of this impure compound Z?
Calcium nitrate are mixed with 15.0 mL of 0.300 M potassium hydroxide, how many moles of calcium hydroxide will be expected to be made?
the specific heat capacity of solid ice is 2.09 jgmiddotdegc and the specific heat capacity of liquid water is 4.18
Solid aluminum metal and diatomic chlorine gas react spontaneously to form a solid product. Give the balanced chemical equation (including phases) that describes this reaction.
What volume of gold would be equal in mass to a piece of copper with a volume of 140.0 mL? The density of gold is 19.3 g/mL; density of copper is 8.96 g/mL
Imagine that you took a road trip. Based on the information in the table, what was the average speed of your car
A sample of tap water produces a white precipitate when treated with silver nitrate, AgNO3. what ion is most responsible for this effect. what is the white precipitate.
Sodium hypochlorite, NaClO, is the active ingredient in bleaches. Calculate the ratio of the concentrations of ClO and HClO in a bleach soltuion having a pH adjusted to a 6.50 by the use of a strong acid or strong base.
An aqueous solution is made by dissolving 24.5 grams of manganese(II) chloride in 466 grams of water.
Determine the molecular formula of the oxide of phosphorous when it is in its gaseous state.
What is the percent hydrogen (H) by weight of a solution containing 53.5mL of CH3COCH3? The density of acetone is 0.788 g/mL
Calculate the amount of N2 gas released (in liters at 37°C and 1.5 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
Why must you avoid using your hands in handling the magnesium ribbon and the crucible and cover? 2.Why must objects be cooled to room temperature before taking their weights(masses)
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