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which anions generally form percipitates? what are the exceptions?
Calculate the energy in joules and calories lost when 18.0 {rm g} gold ({rm Au}) cools from 226^circ C to 124^circ C.
The half-life for the radioactive decay of [U]-238 is 4.5 billion years and is independent of initial concentration. Part A How long will it take for 20% of the [U]-238 atoms in a sample of [U]-238 to decay?
Arrange the molecules in order of decreasing boiling point. Rank the molecules from highest boiling point to lowest boiling point.
Draw sodium formate by placing atoms on the grid and connecting them with bonds. Include all lone-pair electrons.
Methyl red (Ka = 7.9 x 10^-6 is added to a buffered solution of unknown pH. Spectrophotometric measurements show the ratio of the basic to the acidic form of the indicator to be 2.57 to 1.000. Calculate the pH of the buffer solution.
What is the osmotic pressure of a solution prepared by dissolving 4.00 g of CaCl2 in enough water to make 540. mL of solution at 28.5°C?
How many grams of CO will dissolve in 1.00L of water at a CO partial pressure of 2.75 atm?
0.90 g of hydrogen chloride (HCl) is dissolved in water to make 5.5 L of solution. What is the pH of the resulting hydrochloric acid solution?
Arrange the four compounds below in order of increasing volatility.
The element boron has two naturally occurring isotopes with masses of 10.0129 amu and 11.0093 amu. What is the percent abundance of the second isotope?
Lead(II) sulfide was once used in glazing earthenware. It will also react with hydrogen peroxide (H2O2)to form lead(II) sulfate and water. How many grams of hydrogen peroxide are needed to react completely with 265 g of lead(II) sulfide?
How many milliliters of 1.50 M H2SO4 are needed to neutralize 50.0 g of NaOH?
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