What is the specific heat of the substance
A 155 g sample of an unknown substance was heated from 25.0°C to 40.0°C. In the process, the substance absorbed 5696 J of energy. What is the specific heat of the substance?
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A weak acid (HA) is found to ionize 17.8% when mixed at a concentration of 0.3 mol/L. What is the value of Ka for this acid?
A solution was prepared by mixing 50.00 mL of 0.190 M HNO3 and 124.00 mL of 0.150 M HNO3. Calculate the molarity of the final solution of nitric acid.
The equivelence point is reached when 35.31 mL of KOH base has been added. What is the hydroxide ion concentration at the equivelence point? The Ka of propionic acid is 1.34 E -5.
If copper has a photoelectric threshold wavelength of 279 nm, calculate the velocity (m/s) of the electron emitted when copper is illuminated with light with a frequency of 2.33 × 1015 Hz.
We did the grignard reagent experiment, and one of the post-lab questions is: What kinds of solvents cannot be used? Give examples.
The equilibrium constant KP is 158. Analysis shows that the partial pressure of O2 is 0.44 atm at equilibrium. Calculate the pressure of NO and NO2 in the mixture.
It the acetylene was collected over water at 17 Celcius and .974 atm, how many milliliters of acetylene were produced.
The vapor pressure of a liquid at 25C is 200 torr. What will happen when the barometric pressure Pbar is lowered to 190 torr?
How much heat is required to warm 221 g of ice from -44.7°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
When separated from a water solution, CuSO4 forms a hydrate with 5 water molecules per formula unit. If 38 g of anhydrous CuSO4 are dissolved in water, what mass of the hydrate could be recovered from the solution?
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