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State the oxidation number charge of the atom indicated in this molecule marked in black bold.
1) CO2
In the unbalanced redox reaction below draw arrows which are in black bold as well as write the subsequent abbreviations "O" for oxidized atom, "R" for reduced atom, "OA" for atom that serves as the oxidizing agent as well as "RA" for the atom that serves as the reducing agent.
2) CrCl6 + PbO yeilds CrO2 + PbCl4
A sample of blood serum is teasted and found to contain testosterone at a concentration of 766 ng/mL. How many grams of testosterone are present in 30.5 mL of this blood? What is the stoichiometric coefficient for oxygen
1000 000 000 copper atoms would form a line 1 cm long. How long would a line formed by 1.10^7 copper atoms be. express your answer in millimeters
55.0 mL of a 1.70 M solution is diluted to a volume of 288 mL. A 144 mL portion of that solution is diluted using 181 mL of water. What is the final concentration?
Determine the ratio of volumes (cm^3/atom and cm^3/mol) to determine Avogadro"s number (atoms/mole).
What is the osmotic pressure of a solution made from dissolving 95.0 g of glucose, C_6H_{12}O_6, in 725 mL of water at 39.0 degrees C?
Calculate the partition coefficient of caffeine between water and each of the other three solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an aqueous solution?
A dryer removes 20,000 lb/hr of water from paper. Air at 70 deg F and 50% Relative Humidity enters and leaves the dryer at 140 deg F at 80% Relative Humidity. The barometric pressure is 14.3 psi. Calculate the total air flow to this dryer (ft^3/mi..
The equilibrium constant for the reaction N2+3H2 2NH3 is Kp=4.34*10^-3 at 300 C. Pure NH3 is placed in a 1.00-L flask and allowed to reach equilibrium at this temperature. There are 1.01 g NH3 in the equilibrium mixture. What is the mass of N2 in..
a since the pressure available for expansion of the arterioles is only 1mmhg what does the surface tension need to be
1)WhenH2(g)reacts withC2H4(g)to formC2H6(g),137kJ of energy areevolvedfor each mole ofH2(g)that reacts. Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
One mole of any gas has a volume of 22.414 L at STP. What are the densities of the following gases in g/L at STP. a) CH4 b) CO2
How many grams of oxygen gas are needed to react completely with 16.2 moles of hydrogen gas to produce water?
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