Density-mole fraction-molarity
A solution of phosphoric acid was made by dissolving 10.0g H2PO4 in 10.0 mL of water. The resulting volume was 104 mL. Calculate density, mole fraction, molarity, and molality of the solution. Assume water was has a density of 1.00 g/cm3
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What is the freezing point of a solution made by dissolving 352g of ethylene glycol c2h6o2 on 648g of water the freezing point of pure water is 0.0c and kf of pure water is -1.86Cm?
Which of the following aqueous solutions will have the lowest osmotic pressure?
Given that the ph for acetic acid is 2.41, the ka=1.8X10-5 and assuming the density of vinegar to be 1.00g/cm3, what is the percent dissociation for acetic acid in vinegar?
What is the pressure in a gas container that is connected to an open end u tube manometer if the pressure of the atmosphere is 742 torr a
The helicopter is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=56500N. The lift force L generated by the rotating blade makes an angle of 21.0 degrees with respect to the vertical. What is the magnitud
At 20 degrees C, the vapor pressure of ethanol is 45 torr and the vapor pressure of methanol is 92 torr. What is the vapor pressure at 20 degrees C of a solution by mixing 27.0 g of methanol and 75.0 g of ethanol?
A salt bridge connects the two beakers, and wires to a voltmeter link the two metal electrodes. Write the equation for the overall cell reaction.
Write a balanced equation for the reaction of rm Ni(NO_3)_2 and NaOH. Express your answer as a chemical equation. Identify all of the phases in your answer. If there is no reaction, enter noreaction.
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Write a letter to the editor on land pollution that threatens the health of individuals living in Guyana, and clearly define the problem.
In this unit, you will learn about physical development in middle childhood and adolescence. In middle childhood, we see important physical changes
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How to make a short discussion with reference and citations. Research Design, Statistical Methods, Variables, Setting/Population/Sample for each of the articles
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