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Calculate the [H ] and pH of a 0.000251 M hydrazoic acid solution. Keep in mind that the Ka of hydrazoic acid is 2.20 × 10-5
the explosive tnt is composed of 37.0 carbon 2.2 hydrogen 18.5 nitrogen and the rest oxygen. if the molar mass of tnt
a lake in central texas contains 5.0 billiion liters of water. the pH is normally 6.4, but it is tested at 5.6. how much CaCO3 should be added to bring the pH to a more reasonable 6.0?
a mixture of caco3 and cao weighing 0.630 g was heated to produce gaseous co2. after heating the remaining solid
if a raindrop weighs 63 mg on average and 5.1 105 raindrops fall on a lawn every minute what mass in kg of rain falls
NH4Cl need to be added to 1.90L of a 0.400M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.55? Kb for ammonia is 1.8 x 10^-5.
anhydrous ferrous sulfate feso4 crystals are produced from an aqueous solution in a two step process. a solution of
What two properties of ATP make it ideally useful for a form of energy storage in cells? Describe why the hydrolysis of ATP is highly exergonic (give at least two reasons).
If the heat of vaporization for Br2 is 29.6 kJ/mol and ΔS° for the vaporization is 88.9 J/mol⋅K, what is the boiling point for bromine?
In the iodination of vanillin, why did the product precipitate out when the solution was treated with excess aqueous acid
Consider the reaction below. N2(g) + O2(g) ? 2 NO(g) Part A: How many moles of NO are obtained when 0.032 mol of N2 is completely reacted?
Question- The relative sweetness of sucralose is 60000. The relative sweetness of sugar is 100. How many grams of sucralose would you need for a solution that has the same sweetness as one made of 2.00g of sugar?
what volume of a 1.75M Calcium hydroxide solution is needed to completely neutralize 100ml of a 2.25M phosphoric acid solution
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