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A colored solution gives a reading of 39.2% transmittance while determined in a calibrated spectrophotometer. Compute the absorbance of the solution. Define the steps with the solution please
A galvanic cell consists of a Mg electrode in a 1.0 M Mg(NO3)2 solution and a Ag electrode in a 1.0 M AgNO3 solution. Calculate the standard emf of this cell at 25 °C
How many molecules of substance B are produced when 30.0 g of substance A reacts? The molar mass of substance A is 23.5 g/mol. A) Convert the mass of A to moles
calculate the total heat change the deltae the pv work and the deltah when 54 g of ice is converted into54g of steam.
A: What is the theoretical yield for this reaction under the given conditions. B: What is the percent yield for this reaction under the given conditions
c3h8g 5o2g-gt 3co2g 4h2ol ho -2220 kjmolpropane is often used for gas grills and is typically purchased by filling a
essay 1when sulfuric acid is a component of polluted air it chemically attacks statues memorials and monuments made
Describe the attractive and repulsive forces between an atom of oxygen and an atom of sodium .
calculate the heat produced by combustion per liter of methanol. Methanol has a density of 0.791g/ml. (d) calculate the mass of CO2 produced per kJ of heat emitted.
A given compound has the following solubility properties. At room temperature, it is souble in diethyl ehter but insoluble in both ethanol and water At high temperatures,
How old is a bottle of wine if the tritium (3H) content is 25% that of a new wine? The half-life of tritium is 12.5 years.
Explain Copper (Cu) dissolves in nitric acid (HNO3), producing copper (II) nitrate, Cu (NO3)2, nitrogen dioxide (NO2) and H2O. Explain what mass of NO2 could possibly be produced by the reaction of 5.00g of Cu and 25.0 g of HNO3
A 115-g sample of steam at 100 degrees C is emitted from a volcano. It condenses, cools and falls as snow at 0 degrees C. How many kilojoules of heat were released
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