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A balloon contains 0.128 mol of gas and has a volume of 2.76L. If an additional 0.073 mol of gas is added to the balloon (at the same temperature and pressure), what will its final volume be.?
What is the Zn2+: Cu2+ concentration ratio in the following cell 25 degrees if the measured cell potential
Calculate what the limiting reactant is in the reaction between copper (II) oxide and hydrochloric acid
The minimum frequency of light needed to eject electrons from a metal is called the threshold and find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.27*10^14s^-1.
Calculate the energy and wavelength associated with an a particle that has fallen through a potential difference of 4.0 V.
Draw the skeletal structure of the major organic product in the following reaction (water is also a product).
Explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. Your answer should include an explanation of (a) the role of heme and (b) the role of the protein itself.
Calculate the molarity of the solution. How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
A solution containing an unknown amount of X and 10.25 mM of Y was run and gave peak areas of 8.20 and 6.50 cm2 respectively. What is the concentration of X in the unknown solution? What kind of standard is Y?
45.00g of an ionizable solid with a MW = 54.2g/mol is added to exactly 250ml of water and the solution is found to boil at 102.380C. Another 38.5g is dissolved in 0.100L of water at 200C to produce a solution. By what amount will the freezing poin..
Assuming that the gas is at standard temperature and pressure there is 1.00 mole per 22.4 L of volume how many argon atoms are there present in this sign
Keq is 1.60 at 933 K for this reaction. H2(g) + CO2(g) H2O(g) + CO(g) Calculate the equilibrium concentration of hydrogen when [CO2] = 0.290 mol/L, [H2O] = 0.250 mol/L, and [CO] = 0.210 mol/L.
Assume that only a single stream exits the fuel cell. What is the flow rate of each of the species leaving the fuel cell? Not that the flow rates given to correspond a fuel cell rate at approximately 50kW using 2004 technology.
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