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For the hypothetical first order reaction A yields products, k= 0.0206 s-1. if the initial concentration of A is 0.165 M, how long would it take for A to be 88.7% consumed?
A light green liquid, and informed that someone accidentally spilled a few small flecks of an intensely green-colored crystalline dye in a rather expensive solvent, so it doesn't make sense to throw away the very slightly contaminated solvent.
What is frequency of chemical shift at 1.25 ppm if 400 MHz NMR spectrometer is used
When you are drawing Lewis structures, why are elements in row 3 capable of having an expanded octet (expanded valence shell), while the elements in row 2 are not capable of this
What is the change in internal energy (in J) of a system that absorbs 0.532 kJ of heat from its surroundings and has 0.225 kcal of work done on it? = j
A gas cylinder that contains argon has an internal volume of 6.88 L. A pressure gauge attached to the cylinder reads 1810 psi
an archeologist unearths a skeleton of a mastodon. analysis shows the skeleton to a carbon-14 activity of 2 cmp counts
The pKa of acetic acid, HC2H3O2, is 4.76. A buffer solution was made using an unspecified amount of acetic acid and 0.30 mol of NaC2H3O2 in enough water to make 1.50 L of solution. Its pH was measured as 4.50 on a meter.
The rate constant (K) for a reaction was measured as a function of temperature. A plot of ln K versus 1/T (in K) is linear and has a slope of -9.50×10^3 K. Calculate the activation energy for the reaction.
The thermochemical equation representing one process used for the synthesis of ammonia involves the equilibrium shown, N2(g) + 3 H2(g) 2 NH3(g) For this reaction, DH° = -92.2 kJ, DG° = -33.4 kJ. All things considered, one concludes that Question 1..
A dilute electrolyte is prepared by dissolving iron(III) chloride in water. It is found to ave a freezing point of - 2.5C. Calculate the molality of the solution
A 363 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 636 mmHg. Calculate the moles of Ar present.
Describe the preparation of one liter of 0.10 M ammonium cholride buffer, ph=9. starting with solid ammonium cholride pk=9.26 and 1 M NaOH. describe in detail steps to solve and use correct units please
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