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What is pH scale?
how much energy is required to turn 500 g of ice at -15.0 celsius to liquid water at 55.0 celsius? specific heat (ice) = 2.10 J/g * C. Specific heat (water)= 4.18 J/g*C
Of these three separate and individual elements: F, Ra, and As, Arsenic is more likely to form polar bonds. Why and how do you tell
There are conventions for naming and constructing the formulas for acids and bases just as there are for other types of compounds. There are 3 main rules for naming acids.
Based on a K_c value of 0.210 and the data table given, what are the equilibrium concentrations of XY, X, and Y, respectively
Which kind of properties are primarily affected by small amounts of impurities in semiconductor crystals
A chemist wants to make 6.5L of a 0.310M CaCl2 solution.What mass of CaCl2 (in g) should the chemist use?
A mixture of carbon and sulfur has a mass of 9.0 g. Complete combustion with excess O2gives 22.7 g of a mixture of CO2 and SO2
Calculate delta H for the process in which N2(g) initially at 250K at 1Bar is heated to 700 K at 1 Bar. how different is this answer from the one calculate assuming the molar heat capacity is constant at 298.15 K over the entire temperature interva..
A metal bulb is filled with 10.2 g of CHCl3 and 0.322 g of CH4 (two gases). What is the total pressure in the bulb if the temperature is 345 C and the volume is 50.0 mL.
Each 1.000 g of 238U that decays eventually produces 0.866 g of 206Pb. If the half-life of 238U is 4.468 x 10^9 years, what is the age of a mineral that has a 238U/206Pb mass ratio of 2.00?
The preliminary concentrations of four species involved in equilibrium are- [Cl2] = 1.40 M, [HCL] = 0.100 M, [O2] = .300 M and [H2O]= .500 M. Is the reaction at equilibrium? Unless, in what direction must the reaction shift for the equilibrium to ..
A spaceship's maneuvering engine burns hydrogen and oxygen. Hydrogen is to delivered to this engine at 1.1atm pressure and 1500l required for a planned maneuver. What pressure must the holding tank be charged with if its volume is 40l? assume the ..
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