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A solution is 0.20M Ba(OH)2. How many moles of H+ must be added to neutralize 100.0ml of the solution?
What is the result of the following subtraction expressed with the correct number of significant figures: 20.15 ? 10.569
Why is it necessary to remove the stopper from a reparatory funnel when liquid is being drained from it through the stopcock
For the reaction N2(g)+O2(g) >>> 2NO2(g), Kc=8.3X10^-10 AT 25*C. What is the concentration of N2 gas at equilibrium when the concentration of NO2 is five times the concentration of O2 gas
A Michalson interferometer had a mirror velocity of 2.75cm/s. What would be the frequency of the interferogram for (a) UV radiation of 350 nm. (b) visible radiation of 575nm, (c) infrared radiation of 5.5 um, and (d) infrared radiation of 25 um?
Calculate the pH when 4.73 g of HCOONa is added to 211.0 mL of 0.50 M formic acid, HCOOH. Ignore any changes in volume. The Ka value for HCOOH is 1.8 x 10-4.
A basketball is inflated to a pressure of 1.50 atm in a 20.0C garage. What is the pressure of the basketball outside where the temperature is -5.00C.
100.0 mL of 0.100 M acetic acid is placed in a flask and is titrated with 0.100 M sodium hydroxide. An appropriate indicator is used. Ka for acetic acid is 1.7 x 10^-5. AFTER 25.0 mL of NaOH is added, what is the pH in the flask at the following p..
Which of the following is less soluble in hexane, ethanol or CCl3H(l). Don't try to type the subscripts, just use letters and numbers.
A solution is 0.10 M in Pb(NO3)2 and 0.10M in AgNO3. Solid NaI is added until the second solid compound is on the verge of precipitating. Which compound precipitates first and what is the I^- concentration when the second compound begins to precip..
What is the hardness of this mineral? What is the specific gravity of this mineral? show your calculations. Using all these properties, identify this mineral?
A first-order reaction has a half-life of 55.0 min at 25 ºC and 6.8 min at 100 ºC. What is the activation energy for this reaction
what is the mass of one mole of copper atoms? How many moles of copper atoms have a mass equal to the mass of a penny?
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