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51.0 mL of a 1.30 M solution is diluted to a total volume of 258 mL. A 129-mL portion of that solution is diluted by adding 121 mL of water.
What is the final concentration? Assume the volumes are additive.
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
the electron in the n=5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?
If the oven uses microwave radiation of wavelength 12.2 cm, how many photons of this radiation are required to heat 1.28 g of water 1.00°C, assuming that all the photons are absorbed?
when 31 mL of 0.200 M HCl has been added to 39 mL of 0.0500 M NH3 solution? HCl is strong acid, Kb = 1.8 × 10-5 for NH3
Acetaldehyde decomposes at 750 K: CH3CHO â†' CO + CH4. The reaction is first order in acetaldehyde and the half-life of the reaction is found to be 530 seconds. What is the rate constant for the reaction at this temperature?
What is the rate constant for the reverse reaction at the same temperature?
A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?
Vinegar is made by adding 33 grams of acetic acid to 625 grams of water. What is the percent by mass of acetic acid in this solution vinegar?
Yield of Reaction, Propene reacts with hydrobromic acid to yield 2-bromopropane via Markovnikov addition about the double bond of the alkene.
Describe the preparation of 1L solution of 0.02M Tris buffer, PH 7.8. 3. What volume of glacial acetic acid (d= 1.06g/ml) and what weight of solid potassium acetate are required to prepare 5 liters of 0.2M acetate buffer,PH 5.0?
calculate the pH a solution that contains 0.800% C5H5N by mass and 0.815% C5H5NHCl by mass
What is the number of moles of an ideal gas, if the volume is 67 mL, the pressure is 716 mmHg and the temperature is 34 0C?
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