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A solid block of exactky 100.0 cm 3 has a mass of 153.6g. Determine its density. Will the block sinf or float on water?
Calculate the vapor pressure of this solution at 25.0 degrees C. At this temperature, the vapor pressure of pure water is 23.8 mmHg.
find the volume of feso4 solution.what volume of 0.200m feso4nbspsolution would be required to react with 20.0ml of
this being in excess of the amount needed to neutralize both hydrogens of the H2C2O4. The excess NaOH required 12.62 mL of 0.1251M HClto reach the equivalence point. What was the weight % of H2C2O4 in the sample.
Consider the following data and select the best buffer system below to make a buffer with a pH of 10.00.
Explain the atmospheric pressure in Mexico City is about 580torr. Briefly define the difference between this and the standard atmospheric pressure at the sea level.
Given stock solutions of glucose (1M), asparagine (100 mM), and NaH2PO4 (50 mM), how much of each solution would you need to prepare 500 mL
In the extracton mixture of naphthalene, benzoic acid, ethyl p-aminobenzoate: what form is the organic base and organic acid after extracted into aqueous phase
When 6.40 g of CH3OH was mixed with 10.2 g of O2 and ignited, 7.50 g of CO2 was obtained. What was the percentage yield of CO2?
A helium balloon at a high altitude has 2.1 × 104 L of helium at 0.40 atm and -13°C. If the balloon descends to an altitude in which the atmospheric pressure is 1.00 atm and the temperature is 20°C.
In 500 ml of HCl concentration x mol / l and stirring heated to the reaction completely. Carefully evaporating the mixture after the reaction, obtained 59.225 g anhydrous salt.
Determine the heat transfer (q) experienced by the calorimeter for this reaction. b. Determine the ?Hrxn per mole of HI. c. Identify whether this reaction is endothermic or exothermic and explain your reasoning.
A gas expands and does P-V work on the surroundings equal to 321 J. At the same time, it absorbs 189 J of heat from the surroundings. Calculate the change in energy of the gas in J.
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