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Solid strontium hydroxide is added to a solution of nitric acid. How many moles of strontium hydroxide are needed to react completely with 500. mL of 0.40 M nitric acid?
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
Commercial grade hcl are typically 39% by mass HCL in water. determine mole fraction of HCL has solution has density
What is the pressure in atmosphere of a gas mixture that consit of 0.2 moles of nitrogen and 0.3 mols of oxygen
what wind flow rate entering the canyon would produce a pollutant concentration greater than 0.0025 gmol/ft^3 in the air coming out of the canyon?
A sample containing .221g Cl is dissolved in 50.0mL of water. How many moles of Cl ion are in the solution?
Using the van der Waals equation, calculate the pressure exerted by 15.0 mol of carbon dioxide confined to a 3.00-L vessel at 56.0 oC. Note: Values for a and b in the van der Waals equation: a = 3.59 L2.atm/mol2, and b = 0.0427 L/mol.
Paradichlorobenzene, C6H4Cl2 is a component of mothballs. A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 C . The boiling point of pure cyclohexane is 80.70 C. Calculate Kb for cyclohexane. Express the constant numerically in degrees C..
A biochemist is trying to purify the enzyme hexokinase from a bacterium that normally grows in the Arctic Ocean at 5C. In the next lab
Find the volume of 1.00M KOH which must be added to 200mL of 1.00M glycolic acid (pKa=3.83) to produce a buffer solution
An unknown gas sample with a mass of 3.17 g and a volume of 0.7521 L at 293.0 K under 1.023 atm has CH2Cl for its empirical formula. What are its molar mass and its molecular formula?
Explain why platinum's potential decreased with time and explain why the steady-state value was -0.413V vs SHE.
Aluminum oxide can be reduced to aluminum metal using carbon, the other reaction product being carbon
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