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A graduated cylinder contains 62.0 mL of water. A piece of gold, which has a density of 19.3 g/ cm3, is added to the water and the volume goes up to 64.5 mL. Calculate the mass in grams of the gold that was added to the water. Explain how you got your answer.
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 9,494kJ of heat is needed from the combustion
During a titration the following data were collected: A 10 mL portion of an unknown acid solution was titrated with 1.0 M NaOH. 40 mL of the base were required to neutralize the sample. What is the molarity of the acid solution
What is the specific heat capacity of silver? Using the specific heat capacity find the heat energy for 235 g Ag with a change in temperature of 32.1 degree C.
Presume that methane is an ideal gas the specific heat capacity of water to be constant as well as equal to 4.184 J/g/K over this temperature range as well as the density of water to be 1.0 g/cm3. The combustion of methane is given byCH4 + 2 O2? C..
What is the correct formula of the salt formed in the neutralization reaction of hydrochloric acid with calcium hydroxide and Select the compound in which sulfur has its highest possible oxidation number.
Calculate so for cooling 1.00 mol of Ne from 298K to 253K under constant volume conditions using the Sakur-Tetrode equation
A 500.0 g iron bar at 212 degrees C is placed in 2.0L of water at 24.0 degrees C. What will be the change in temperature of the water?
hydrogen atoms have an absorption line at 1.026x10-7m.what is the frequency of the photons absorbed and what is
An ideal gas in a sealed container has an initial volume of 2.25 L. At constant pressure, it is cooled to 21.00C where its final volume is 1.70 L. What was the initial temperature
The Ksp for bismuth (III) iodide is 8.1 x 10-19. Calculate its solubility, molar solubility, and concentration of each species at equilibrium.
KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and KOH reacted.
The heat of fusion of acetic acid is 11.5 kJ/mol. Its melting point is 16.6 C. The change in entropy for the melting of acetic acid in J(mol * K) is
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