If 25.0 kJ of heat energy is added to 50.0 g of water initially at 25°C,...
If a gaseous mixture is made by combining 4.68 g Ar and 2.73 g Krin an evacuated 2.50 L container at 25.0 °C, what are the partial pressures of each gas, PA and Pr, and what is the total pressure, Poul exerted by the gaseous mixture? Par = 0.423 am Pk 0.200 atm Potal = 0.623 A 7.85 L container holds a mixture of two gases at 43 °C. The partial pressures of gas A and gas B, respectively, are...
A 50.0 g sample of water, initially at 25.0°C, is heated until it starts to boil. How much heat was needed to heat it to 100.0°C? The specific heat capacity of water is 4.184 J/gC. ( I don't know what formula I would use to solve this.)
1. A volume of 80.0 liters of oxygen is collected over water at 40.0 °C. The atmospheric pressure in the room is 0.980 atm. What is the partial pressure of the oxygen? The vapor pressure of water at 40 °C is 55.324 torr. A) 0.907 atm B) 0.689 atm C) 0.815 atm D) 0.784 atm E) 1.05 atm 2. A closed 5.00 L container is filled with a mixture of 4.00 moles of hydrogen gas, 8.00 moles of oxygen, 12.0...
Calculate the amount of heat (in loules) that must be added to 50.0 g of water to increase the temperature from 26.3C to 52.70. The specific heat of water is 4.18 J/g C An 50.0 g iron nail was heated in a blacksmith forge until it glowed cherry red. It was then dropped into a calorimeter containing 50.0 g of water at room temperature (21.5°C) and swirled gently until the temperature reached its maximum. The final temperature was 26.0 C....
1. Calculate the enthalpy change, ΔH, for the process in which 31.6 g of water is converted from liquid at 0.4 ∘C to vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C and Cs = 4.18 J/(g⋅∘C) for H2O(l). 2. How many grams of ice at -16.2 ∘C can be completely converted to liquid at 10.2 ∘C if the available heat for this process is 4.27×103 kJ ? For ice, use a specific heat of 2.01...
If a gaseous mixture is made by combining 3.97 g Ar and 3.90 g Kr in an evacuated 2.50 L container at 25.0 ∘C, what are the partial pressures of each gas, ?Ar and ?Kr, and what is the total pressure, ?total, exerted by the gaseous mixture? ?Ar=______atm ?Kr=_____atm ?total=____atm
If a gaseous mixture is made by combining 4.15 g Ar4.15 g Ar and 1.73 g Kr1.73 g Kr in an evacuated 2.50 L container at 25.0 ∘C,25.0 ∘C, what are the partial pressures of each gas, ?ArPAr and ?Kr,PKr, and what is the total pressure, ?total,Ptotal, exerted by the gaseous mixture? ?Ar=PAr= atmatm ?Kr=PKr= atmatm ?total=Ptotal= atm
25. 30.0 g of 271.4°C liquid bismuth (Bi) is added to 80.0g of 25.00°C water in a perfectly insulated container. After the temperature equilibrates, the temperature inside of the container is 32.49°C. How much heat did bismuth lose during this process? Melting point of Bi = 271.4°C Cs (liquid H2O) = 4.18 J-gr1-K-1 Cs (solid Bi) 0.123 J gr1 K1 А. 0.139 kJ В. 0.882 kJ C. 0.909 kJ D. 2.50 kJ 4.22 kJ Е. I
A 50.0 mL sample of a gas was found to have a pressure of l.0 atm at 25 degree C. What will be the new volume if the temperature is changed to 50 degree C at constant pressure? A 2.00 L sample of Nitrogen gas at 25.0 degree C was found to have a pressure of 1.00 atm. How many moles of gas are present and what is the mass of the gas in grams? The total pressure in a...
QUESTION 1 A 34.6 g piece of metal, initially at 96.0 °C is placed in 50.0 g of water (C = 4.18 J/gº) initially at 21.0 °C in an insulated container. The system comes to thermal equilibrium (the metal and the water are at the same temperature) at 23.1 ° C. Calculate the specific heat of the metal. C=/ 8°C)