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Question: An experiment shows that a 250 mL gas sample has a mass of 0.430 g at a pressure of 728 mmHg and a temperature of 26 C.
What is the molar mass of the gas?
A 0.040 M solution of a monoprotic acid is 14 percent ionized. Calculate the ionization constant of the acid.
If you make three serial 1:5 dilutions, using the solution above, what is the concentration of the final solution?
the specific heat of an unknown element in the solid liquid and gas phases are 100 50 and 2.5 jg c. the heat of
what is the partial pressure of helium? If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure of argon?
The equilibrium vapor pressure of liquid hydrogen at 16 K is 0.213 bar. The standard (1 bar) boiling point is 20.3 K. Use the Clausius-Clapeyron equation to estimate the enthalpy of vaporization of hydrogen
How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0^\circ C, to steam at 110^\circ C. The heat capacity of ice is 2.09 J/g ^\circ {\rm C} and that of steam is 1.84 J/g ^\circ {\rm C}. q=?kJ
How many moles of nonane (C9H20) and oxygen are required to produce 13.5 moles of carbon dioxide and 15 moles of water by complete combustion
Indicate the pH at (a) the beginning of the titration (0.0 mL titrant) and after the addition of (b) 12.5 mL, (c) 24.0 mL, (d) 24.9 mL, (e) 25.0 mL, (f) 25.1 mL, and (g) 30.0 mL of the titrant. Label the half-neutralization point and the equivalen..
what mass of neon gas should be introduced into an evacuated 0.55 L to produce a pressure of 80 kPa at 30 degrees celsus
Given that a 2.00 molar aqueous solution of ammonium phosphate has a density of 1.09 g/mL. Calculate molal and mass percent pf ammonium phosphate in solution.
where all compounds are assumed as covalent then determine which reaction must be endothermic and also explain your answer briefly?
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.61 nm. It then gives off a photon having a wavelength of 950 nm. What is the final state of the hydrogen atom
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