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When a glow stick is placed in a freezer, its chemiluminescence lasts a significant time longer. How might this come about?
What volume in liters of 0.94 M KOH solution should be added to a 0.090 L solution containing 9.1 g of glutamic acid hydrochloride
if a plant produces 5.06 mol of C6H12O6, how many moles of CO2 are needed?
a flask contains 30mL of 0.16 M phosphate buffer that has a pH of 7.1. what volume of 0.06M NaOH should be added to increase
Calculate the change in internal energy if a) The specific heat is assumed constant at its room-temperature value.
How many moles of phosphine (PH3) are produced for every 4.0 moles of hydrogen that react according to the chemical equation below?.
A 2.5M solution of hydrocyanic acid has a measured pH of 4.5. Calculate the Ka for hydrocyanic acid and its % dissociation.
Keep in mind that it will be too thick and greasy to insert in a capillary tube. Also, remember that the melting point of vegetable oil is well below room temperature.
Compute the heat amount required to heat a 3.9kg gold bar from 28 degree Celsius to 68 degree Celsius. Given Specific heat capacity of gold = 0.128 J/g°C.
Aluminum metal dissolved in hydrochloric acid as follows: 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)
Which side of the reaction (reactants or products or neither) is favored structurally? (f) Calculate the pH of the system that will generate a cell potential, ?E, of + 0.157 V when the ratio [Fe-S(Fe2+)]/[Fe-S(Fe3+)] = 2.25, [CoQ] = 8.17 x 10-4M, ..
How much heat is required to warm 223 g of ice from -46.3°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
Calculate the electrode potential of the following half cell if it was at standard conditions. Then recalculate how this changes using.
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