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Calculate how many moles of nitrogen will be required to make 10.0 moles of NH3?
Radiation of wavelength 633 nm in pulses is produced by A ruby laser whose duration = 2.00 x 10-9 s. calculate what is energy of each pulse If each pulse contains no of photons =1.20 x 1018 ?
A certain indicator, HA, has a Ka value of 0.000040. The protonated form of the indicator is yellow and the ionized form is red. What is the pKa of the indicator
What is the volumetric flow rate of gases out the stack (m3/min)? Note - in these units, R has a value of 0.08206 atm-m3/kmol-K.
The normal freezing point of water H2O is 0.00 oC and its Kf value is 1.86 oC/m. Assuming complete dissociation of the electrolyte,
Consider methyl cyanide, H3CCN. a.) Draw the best possible Lewis structure of methyl cyanide. b.) Predict the geometry and hybridization of each carbon atom. c.) Describe the bonding in this molecule in terms of sigma
use curved arrows to show the flow of electrons in each step, and note any relevant charges or lone pairs of electrons.
Nitric oxide, oxygen, and nitrogen react by the following equation. 2 NO(g) N2(g) + O2(g)Kc = 2.3 10^30 at 298 K
The reaction of 2,2-dimethyl-1-propanol with HBr is very slow and gives 2-bromo-2-methyl-propane as the major product. Give a mechanistic explanation for these observations
Use the Boltzmann equation to calculate the excited-state and ground-state population ratio for HCl (g*/g0=1) at room temperature (25 oC). The frequency of the absorption from the ground to the excited state is 2885 cm-1. What is the population ra..
The products formed in several reactions are given below. Identify the reactions (labeled x and y) and write the complete balanced equation for each reaction
A solution is made witmlh 20.2ml of CH3OH ( density= 0.782g/ml), dissolved in 100.ml of water (density = 1.00 g/ml). Calculate the concentration in the units of:
For a certain process at 27°C, DG = +210.6 kJ and DH = -168.2 kJ. What is the entropy change for this process at this temperature? Express your answer in the form, DS = ____ J/K.
What is the molar mass of a gas which occupies 32.9 L at 82oC under 1.124 atm of pressure and has a mass of 23.7 grams
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