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Explain how much would a liter of water primarily at 20 degrees C, be cooled by the addition of 10 cubes of steel, each 2.5 cm on a side originally at -10 degrees C We know that while ice melt its temperature stays fixed at 0 degrees C while absorbs 334 kJ/kg of heat from its environment. The heat capacities of water, ice and steel are 4.2 kJ/kg K, 2.1 kJ/kg K as well as 0.42 kJ/kg K. The density of steel is 8.0 gm/cm3
an element consists of two isotopes. the abunance of one isotope is 60.1 and its atomic mass is 68.9256 u. the atomic
When 2-methylpropene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. What new substance has been formed
What will be the volume of the gas sample if the pressure increases to 780 mm and the temperature increases to 35°C
Rank the compounds(acetone,butane,acetic acid, 2-propanol, 2-methylpropane, 1-propanol) by vapor pressure, label the one that has the lowest vapor pressure and the one that has the highest.
the balloon reaches an altitude of 100m, where the pressure was 658 mmHg and the temperature was -8c. what was the volume in liters of the ballon at these conditions?
What is an anionic sulfide complex. Explain in terms of coordination chemistry, and show reactions of their formation. When do these complexes form. Are these complexes water soluble
If 3.7456g of synthesized aspirin is found to contain a 30.0% impurity of salicylic acid, what is the corrected experimental (or actual) yield
A 100 mL sample of .20 M HF is titrated with .10 M KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 * 10^-4
calculate the final pressure of a sample of carbon dioxide gamma1.40 that udergoes a reversible and adiabatic expansion
the mineral is pyroxene.1. recalculate the analysis into chemical formula.the formula should show the atoms of each
Calculate the minimum volume of distilled water, in liters, necessary to completely dissolve a 7.5 g sample of AgBr (s) at 298K. The molar mass of AgBr is 188 g mol ?
Calculate the wavelength of the photon emitted when an electron makes a transition
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