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1) starting with a 10% solution and making a series of 1:100 dilutions, how many dilutions must you make to prepare a 0.1 ppm (part per million) solution? how many ppb's (part per billion) is this concentration?
2) starting with a 0.1 M solution and making a series of 1:100 dilutions, how many dilutions must you make to prepare a solution, that on average, has fewer than one molecule of solute per liter of solvent.
Draw a 3-dimensional sketch, using dashes and wedges. Be sure to show all atoms (no line drawings), to draw pi bonds (with sets of overlapping p orbitals) and to include the orientation of lone pairs of electrons.
determine the theatrical yield if 1.56 grams of hydrogen is permitted to combines with 9.70 grams of nitrogen producing
a wave in the ocean has amplitude of 3m. winds pick up suddenly increasing the waves amplitude to 6m. how does the
If a process is carried out at constant pressure P and the volume V of the system decreases, then is delta V negative or positive and is the work w negative, positive, or zero
how much heat does your body lose when 2.95g of sweat evaporates from your skin at 25 degrees Cecilius
When 37.2 L ammonia and 42.0 L oxygen gas at STP burn, nitrogen monoxide and water are produced. After the products return to STP, how many grams of nitrogen monoxide are present
A reaction has a standard free energy change of -11.50 kj/mol^-1. Calculate the equilibrium at 25 degrees celcius
calculate the volume of 0.1205 M NaOH that will neutralize 10.0 mL of 3.8% (by mass) citric acid solution.Assume the density
The half-life of plutonium-239 is 24,100 years. How long will it take for a 100 g sample of plutonium to be reduced to 25 g
Calculate the pH of an aqueous solution that is 0.020 M in HNO3 (aq) at 25 degrees Celcius. Is the solution acidic or basic
Determine the mass of lithium hydroxide producecd when 0.38 g of lithium nitride reacts with water according to the follow equation: Li3N + 3H2O equals NH3 + 3LiOH
An ice bag containing 324 of ice at 0deg C was used to treat sore muscles. When the bag was removed, the ice had melted and the liquid water had a temperature of 17.0 deg C.How many kilojoules of heat were absorbed?
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