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A 13.71g of NaBr contains 22.34%na by mass. Regard as the law of constant composition. Explain how many grams of sodium does an 8.71 g sample of sodium bromide contains.
What volume will contain 5.0 mol of aluminium? The density of aluminium is 2.7 g/ml.
Wpump = 1500 kJ/h = 0.42 kW Qboil = 2.59 x 106 kJ/h = 718.7 kW Wturb = -227,300 kJ/h = -63.1 kW Qcond = -2.36 x 106 kJ/h = -656 kW What is the efficiency of the engine? How should we define it?
How many grams of sodium fluoride should be added to prepare the buffer solution? Neglect the small volume change that occurs when the sodium fluoride is added.
A sample of K2S contains 1.35 g of potassium. How many moles of potassium sulfide are present in the sample
Calculate the overall energy change in kilojoules per mole for the formation of CaCL(s) from the elements. The following data are needed
The student's body temperature dropped from 40.0C to 37C. Presume the specific heat of the student to be 3.77 J/g*C, Explain what was the final temperature of the water
If electricity of sufficient voltage is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and elemental iodine are produced, leaving a solution of potassium hydroxide. Write the unbalanced ..
What is the profit-maximizing level of output for Joe's Ice Cream?
f the water if brought to the vapour state at 204C and 710 KPa, where its enthalpy is 2649.4 KJ/Kg and its specific volume is 291.8 cm^3/g, what is the internal energy (U) at these conditions in KJ/Kg? c) Calculate the change in internal energy (d..
A solution of KOH in ethanol is made up by dissolving 0.335 g KOH in ethanol to form 250.0 mL of solution. Similarly, 1.455 g of C2H5I is dissolved in ethanol to form 250.0 mL of solution.
Consider a solution that contains 66.0% R isomer and 34.0% S isomer. If the observed specific rotation of the mixture is -30.0°, what is the specific rotation of the pure R isomer
The solubility of which one of the following compounds will increase if the pH of a saturated solution of the compound is lowered
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