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What is the osmotic pressure of a solution made from dissolving 60.0 of glucose, , in 550 of water at 45.0?
how many grams of carbon dioxide would be produced if 45 grams of C6H12O6 completely reacted with oxygen?
describe the preparation of 200 mL of 1.00% (w/v) aqueous CuSO4, from a 0.218 M CuSO4 solution.
Consider the following data. 2 Ca(s) + O2(g) 2 CaO(s) H = -1270.2 kJ C(s) + O2(g) CO2(g) H = -393.5 kJ CaO(s) + CO2(g) CaCO3(s) H = -178.3 kJ Use Hess's law to calculate H for the reaction below.
Energy costs vary greatly with energy source: coal @ $25.00/ton, gasoline @ a pump price of $2.00/gal, and electricity @ $0.1000/kWhr. Conventional practice is to put these on a common basis by expressing
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 288 oxygen molecules are used up in this reaction, how many sulfur molecules reacted. In the reaction above, how many molecules of sulfur dioxide were formed.
hydrogen gas is collected over water at 21 degrees C and an atmospheric pressure of 748 mm Hg. what is the partial pressure of hydrogen gas in the mixture
Describe the preparation of 1L solution of 0.02M Tris buffer, PH 7.8. 3. What volume of glacial acetic acid (d= 1.06g/ml) and what weight of solid potassium acetate are required to prepare 5 liters of 0.2M acetate buffer,PH 5.0?
Find the standard change of entropy for the formation of CH2Cl29g) from its gaseous elements in their standard states. Please show and explain how you got the answer. Specifically how you came up with a balanced equation.
How many electrons should we expect to see associated with the lowest energy peak in the photolectron spectrum of the element Gallium (Ga)?
Consider the titration of 52.0 mL of 1.2 M NaOH with 1.0 M HCl. Find the pH at all the following points. At the equivalence point.
a .150 gram sample of solid leadii nitrate is added to 125 ml of .100 m sodium ... .100 m sodium iodide solution.
Write the condensed electron configurations for the Pt atom. Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For example, should be entered as [He]2s^22p^2.
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