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A solution with weight percent of sodium hydroxide of 6% is prepared by adding the following mass of water to 200 grams of that solution with a weight percent of NaOH of 30%. Find the amount of water to be added?
the rate of effusion of a particular gas was measured and found to be 24.0 mlmin. under the same conditions the rate of
Green light has a wavelength of approximately 645 nm. What is the energy in kJ of 1.00 mole of photon of green light
calculate the grams of deposit in the following situations: a) In the form of Tl2O3 (solid) on an anode? (b) as the element Tl (solid) on a cathode?
can the solubilities of formate pbcho22 pkso 6.70 pka 3.75 and copper iodate cuio32 pkso 7.13 pka 0.79 be made
above the threshold frequency, what must be increased to increase the number of electrons ejected? What must be increased to increase the energy of the electrons ejected
What is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 L per minute at 573 K and 69.08 atm
If the average human body discharges 536 g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft? Answer in units of mol.
The Na+ ion is effectively inert. Given the availability of solution of A, B, and C, develops a simple procedure for identifying the salt that is present in your unknown.
One possible explanation is that two molecules of collide with each other and form two molecules of the product in a single elementary step. If that were the case, what reaction order would you expect
What is the value for the equilibrium constant (K = KP ) at 1200 K for the reaction: 2HBr +1/2O2 ?? Br2 + H2O. b) What is the value of ?rG? at 1200 K temperature for the reaction in a)
Determine how many moles of carbon dioxide should be combined to the system to bring the equilibrium carbon monoxide concentration to 0.715 mol/L?
Problem- Calculate the difference between delta H and delta U when 1.0 mol of grey tin 5.73.g cm-3 changes t o white tin 7.31gcm-3 under 1*10^6 pa pressure at 298K, delta H =2.1KJ. Calculate the volume changes. 1 Pa=1KG m^-1S^-1
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