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Iron pyrite (fool's gold, Figure 1.11) has a shiny golden metallic appearance. Crystals are often in the form of perfect cubes. A cube 0.40 cm on each side has a mass of 0.064 g.
(a) Which of these observations are qualitative and which are quantitative?
(b) Which of the observations are extensive and which are intensive?
(c) What is the density of the sample of iron pyrite?
Calculate the magnitude of the current in amperes if the number of moles of hydrogen gas produced is 5.36×10-4
The vapor pressure of ethanol at 50 oC is 233 mm Hg, and its normal boiling point at 1atm is 78.3 oC. Calculate Hvap of ethanol.
a 3.00-g sample of a compound having the formula ch2o n is dissolved in water to form 100.0 ml of solution. the
Draw the structure (on a scratch sheet of paper) for the molecule that fits the following description and then name it according to IUPAC formalism:
A 25 mL sample of .1 M HCl is titrated with .1 M NaOH. What is the pH of the solution at the points where 24.5 mL and 24.9 mL of NaOH have been added.
Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions. 0.17 M CH3NH2Cl
the hydrocarbon solvent used in this experiment hexanes us amixture of c6h14 isomers. draw the structures of the 4
When an additional mol of gas is added at constant temperature and volume to a flask containing 2.00 mol of gas at 25oC and 1.00 atm pressure, the pressure increases to 1.60 atm.
Which kind of properties are primarily affected by small amounts of impurities in semiconductor crystals
The concentration of potassium ions inside a nerve cell is around 20 to 30 times that outside the cell. Calculate the potential difference between inside
Calculate the molality of a sucrose (C6H22O11) solution containing 14.3 g of sucrose in 676 g of water
Why is it necessary to remove the stopper from a reparatory funnel when liquid is being drained from it through the stopcock
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