How much energy would be absorbed as heat
How much energy would be absorbed as heat by 75 g of iron when heated from 295 K to 301 K? (Cp for iron= 0.449 J/g*C)
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Which non-metal anion bearing a charge of -1 is represented by the electronic configuration 1s22s22p6? Write down your answer in the form A- where A is the symbol for the element from which the anion is derived.
A gas sample was collected over water at 25.3oC. The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
What must the heat rating of the heater, in kJ/min, to accomplish this? Ignore the heat that goes to the heat cup itself. The density of water is 0.997 g/ml.
The heat capacity of a bomb calorimeter is found to be 5.68 kJ/oC. When a 1.652 g sample of glucose is burned in the calorimeter, the temperature of the calorimeter increases from 24.56 oC to 29.10 oC.
How much heat is required to convert 27.0 g of ethanol at 23 C to the vapor phase at 78 C in kJ? Ethanol (C2H5OH) boils at 78 C.
A gaseous mixture of and contains 32.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 245 ?
Balance the equation and answer in terms of moles. The disinfectant hydrogen peroxide (H2O2) decomposes to form water and oxygen gas. How much O2 will result from the decomposition of 8.38 mol of hydrogen peroxide?
An empty Erlenmeyer flask weighs 194.4 g. When filled with water (d = 1.00 g/cm3), the flask and its contents weigh 489.1 g. What is the flask's volume?
Despite the expected decrease in atomic size, there is an unexpected drop in the first ionization energy between Groups 2A and 3A in periods 2 through 4 (e.g., Be to B). Explain this pattern in terms of electron configuration and orbital energies.
What is the pH of the solution created by combining 11.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? mwith 8.00 mL of the 0.10 M HC2H3O2(aq)?
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