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When eating a piece of hot apple pie, you may find that the crust is only warm but the apple filling burns your mouth. Why is this? Why do sidewalks have lined joints built into them?
What is the minimum time for 90 per cent recombination?
How many moles of oxygen are produced at room temperature given the following: Volume of oxygen at room temp = 48.3 mL (0.0483 L) Room temp. = 295.35K Barometric pressure = 775.7 mm Hg (1.0207 atm) Mass of oxygen produced at room temp = 0.0532g
determine the volume of 0.1 m naoh that is required to react with all the acetic acid in a solution containing 25.0 ml
When 15 mL of a solution containing 1.2 M Na2S is diluted to 30mL, a dilute solution is formed. How many moles of Na+ ions are contained in 20 mL of the dilute solution
hematite iron ore weighting 70.7g was placed in a flask whos volume was 53.2ml. the flask with hematite was carefully
Find the density in the unit of g/cm3 of F2 gas at 20.0oC and 1 bar, given that molecular weight of F2 is 38.0 g/mol.
How many moles of magnesium oxide are produced by the reaction of 3.82 g of magnesium nitride with 7.73 g of water? Mg_3N_2 + 3H_2O yields 2NH_3 + 3MgO
A generic salt, AB, has a molar mass of 189 g/mol and a solubility of 6.10 g/L at 25 C what is the Ksp of this salt
Sulfur trioxide gas is produced from sulfur dioxide gas as well as oxygen gas. Presume working at STP.
When we go across a row of the periodic table, electrons are added and the ionization energy typically increases. When we go down a column, however, electrons are being added but the ionization energy typically increases. Explain this behavior. Th..
A solution consists of 10g of liquid X (MW:50) and 9g of liquid Y (MW:30). The vapor pressures of pure X and Y are 40 and 70 mmHg, respectively, at 20°C. What are Nx and Ny (N = mole fraction)? What is the partial pressure of X over the solution a..
The space shuttle environmental control system handles excess CO2 (it is 4.0% by mass of exhaled air) by reacting it with LiOH, pellets to form Li2CO3 and water. If there are 7 astronauts on board ad each exhales 20.L of air per minute
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