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A tank contains helium gas at 576 mmHg, nitrogen gas at 1.57 atm, and neon at 730 torr. What is the total pressure in atm?
A balloon filled with 39.1 mol of He gas has a volume of 875 L at 0.0 degrees Celsius and 1.00 atm. The temperature is increased to 38.0 degrees Celsius as the balloon expands to 998 L at constant pressure. Calculate delta E for the He sample. C H..
Calculate the freezing point of a solution of 1.65 g of naphthalene (C10H8) in 15.90 g of benzene.
Problem- The value for Ksp for copper(I) bromide, CuBr is 4.20 x 10-8. CuBr (MM = 143.45 g/mol). What is the solubility of CuBr in pure water in g/L
Deuterium is an isotope of hydrogen. The abundance of deuterium in water is 0.0150%. How many moles of water would be required to obtain 0.0730 moles of deuterium (D2)
Calculate the molar concentration of OH - ions in an 1.18 M solution of a weak base, hydrazine, N2H4. (Kb = 4.0 10-6). What is the pH of this solution
Find delta H for the solution of one mole of NaOH in H2O If calorimeter constant is 11 cal/deg C
53.5 g of an ideal gas of molecular weight = 30.5 g/mol are confined at a pressure of 133 mmHg. The density of the gas is 0.228 g/L. Compute the temperature of the gas in degrees Celsius.
What will happen when some solid, radioactive NaCl is added to a beaker containing a nonradioactive satuarted solution of NaCl? (Before any radioactive NaCl is added, there is undissolved NaCl on the bottom of the beaker containing the saturated ..
What mass of this substance must evaporate in order to freeze 250 g of water initially at 15 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c.K}.)
Now that you have had a chance to study the organ systems of the body, choose one system and research it further.
Problem- Write the balanced chemical equation for the reaction of the weak acid HCN with water. Include the phase of each species.
What is the mass, and the volume, of this seawater that contains 1.00 g of oxygen?
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