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The temperature of 55.6 grams of a material decreases by 14.8 degrees C when it loses 3080 J of heat. What is its specific heat?
Determine the freezing point of an aqueous solution that is 1,7 m in ethylene glycol. The freezing point depression constant for water is 1.86°C/m The freezing point of pure water is 0.0°C.
Calculate mass, mole fraction and avg. molecular weight of air, Calculate the constituent (a) mass, (b) mole fraction (c)average molecular weight of air at 25 degree centigrade, 1 atm, and molar density of all listed gases
How many grams of ammonium sulfate can be produced in 30 mol of H2SO4 react with excess NH3 according to the equation 2NH3(aq)+H2SO4(aq)-->(NH4)2SO4(aq)?
How many grams of magnesium chloride, MgCl2, would be required to prepare a 0.2019 m MgCl2 solution by combining this compound with 0.2050 L of water (assume a density of 1.00 g/mL)?
An 8 g of SO3 was placed in an evacuated container where it decomposed at 600 degrees Celsius. At equilibrium, the total pressure and density were 1.8 ATM and 1.6 g/L. Calculate constant pressure.
15 g of steam at 373 K is added to 250g of H2O (l) at 298 K at constant pressure of 1 bar. Is the final state of the system steam or liquid water? Calculate ?S for the process.
what volume (in mL) of 1.12 M NaOH is required to react with exactly 12.3 grams of ferric chloride, according to the following equation? FeCl3(aq) + 3 NaOH(aq) → Fe(OH)3(s) + 3 NaCl(aq)
Consider a glass of 298 mL of water at 30°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
Calculate the percent manganese in the sample as Mn3O4 (only part or none of the manganese may exist in this form, but we can make the calculations on the assumption that it does)
If 545 mL of oxygen gas is collected at 21°C and 745 mmHg , what is its volume at STP?
What is the concentration of vinegar in moles per liter of solution (molarity, M)?
When 3.41 g of P4 is burned, 86.1 kJ of thermal energy is evolved at constant pressure. What is the molar enthalpy of combustion of P4?
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