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A mixture of gases collected over water at 14 degrees Celsius has a total pressure of 0.981atm and occupies 55mL.
a. Explain how many grams of water escaped into the vapor state?
b. Define what volume does the mixture of gases, exclusive of the water vapor, occupy?
c. State what volume does the mixture of gases, exclusive of the water vapor, occupy at STP conditions?
The water level in a graduated cylinder initially at 211 rises to 282 after a piece of lead is submerged. What is the mass in grams of the lead.
At the begining of the titration being performed in this lab experiement, how do you determine how much naoh should be added at each interval between volume-pH readings? As you approach the equivalence point,
How much heat is required to warm 227 g of ice from -44.9°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?
The barometric pressure in a cavern was measured using a mercury barometer. A value of 74.2 cm of Hg was obtained. How many atmospheres is this
a railroad car derails and spills 36 tons of concentrated sulfuricacid. the acid is 98.0 mass h2so4 and has a density
A sample of saturated magnesia is found to have [OH1-] = 3.22 x 10-4M. What is the pOH of the solution. Is magnesia acidic (A), basic (B), or neutral (N)
Compute the unsaturation number (aka index of hydrogen deficiency) associated with C4H3NO2S. Interpret your results. If there are no triple bonds in this compound, can you suggest a reasonable structure for the compound
Calculate the work, w, and energy change, ?Urxn, when 20.51 g of Cu2O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25°C.
If 45 mL of H2 (g) are collected over water at 27°C and 751 mmHg external pressure. How many grams of Al were reacted.
What is the heat capacity of mercury if it requires 167 J to change the temperatures of 15.0g mercury from 25.0 Celsius to 33.0 Celsius
Write a molecular equation for the reaction sodium bromide and sulfuric acid (states of reactants and products must be shown)
If a second-period diatomic molecule has 4 electrons in its valence shell (total of 2s and 2p electrons), what is the predicted bond order of the molecule
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