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A solution is made by dissolving 0.75 g of salt in 100.00 g of water. Calculate the % m/m for the solution. *0.74% m/m *0.75% m/m *7.5% m/m *7.4% m/m
Propanoic acid, HC3H5O2, ionizes in water and has a Ka=1.34x10^-5. What is value of Kb for the propanoate ion
Draw a potential energy diagram for the rotation about the 3,4 carbon-carbon bond plotting potential energy versus torsion angle for 2-methylhexane
What concentration of naphthalene in grams per liter would be needed to give an absorbance of 1.0 at 220nm
If 16.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
Complete and balance the following equations, and identify the oxidizing and reducing agents. MnO_4^-}(aq) + CH_3OH}(aq) -->Mn^{2+}}(aq) + {\rm HCO_2H}(aq) acidic \ solution})
1-bromobutane reacts with formaldehyde. what is the product before the H30+ reacts on the product
The measured boiling point of the solution was 65.46 °C. Calculate the molecular weight of the unknown substance.
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath.
How many moles of gas are present when you collect 35.83 mL of the gas over water at 25.3?C and 0.97 atm?
What is the molarity of the HCl solution if 270 mL of the HCl solution reacts with magnesium to produce 7.40 L of H_{2} gas measured at STP.
The combustion of pentane with oxygen is a well known process. Write a balanced equation for the reaction of pentane, C5H12, with oxygen, O2, forming the products carbon dioxide, CO2, and water, H2O. What mass of carbon dioxide will be produced by..
Lauryl alcohol, C12H25OH, is prepared from coconut oil; it is used to make sodium lauryl sulfate, a synthetic detergent. What is the molality of lauryl alcohol in a solution
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