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If a open-tube manometer contains a non volatile silicone oil (density=1.30 g/cm3 instead of mercury (13.6 g/cm3), what are the pressures in the flask of the manometer as show, in torr atmospheres, and pascals. The air is exerting a pressure of 760 torr. In the first flask the height difference is 118 mm and in the second it is 215 mm.
The ethylenediaminetetraacetate ion, H2Y 2-, forms a strong complex with the calcium ion. How does the addition of the H2Y 2- affect the molar solubility of Ca(OH)2? Explain.
a mass of 2.50 g of hydrated copper sulfate is placed in a crcible and heated. on heating, 1.59 g of white anhydrous copper sulfate is left behind. determine the ratio of water to copper sulfate.
The observed rotation of a solution of 1.3 g of a compound in 10 mL of water is +3.7 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound
a write the propagation steps leading to the formation of dichloromethane ch2cl2 from chloromethane.b explain why
Predict whether the following reactions will be spontaneous in acidic solution under standard conditions.
Electrophilic Substitution, Which compound is more reactive toward electrophilic substitution (e.g., nitration)? Explain you reasoning.
Use the periodic table to write electron configurations for each of the following elements. Represent core electrons with the symbol of the previous noble gas in brackets. For example, [He]2s^2 2p^2.
A cook wants to heat 1.89 kg of water from 31.0 C to 100.0 C If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn? Natural gas produces 49.3 kJ of heat per gram. (For the sake ..
Substitution and elimination reactions are competing reactions. Under what conditions can you ensure that substitution will predominate
Calculate the pH of 1.00 L of a buffer that is 0.200 M in HC2H3O2 and 0.100 M in NaC2H3O2. The Ka of HC2H3O2 = 1.8E-5
Write the complete mechanism for the reaction of the above molecule with HCl. Used curved arrows to indicate the formation or breakage of covalent bonds, label all charges, and show each step separately.
the temperature unknown. When the volume changes to 1.68L the temperature is found to be -220oC. What was the initial temperature in C?
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