Swirling of a solution
Explain why the swirling of a solution and its drying agent hastens the drying process.
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In a coffee cup calorimeter 50.0 mL of 1.0 M NaOH and 50 mL of 1.0 M HCl are mixed. Both solutions are originally at 23.0 oC. After the reaction, the temperature is 30.0oC. Assuming all solutions have a density of 1.0 g/mL and a specific heat cap
What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C?
A full-revolution press has 100 rpm flywheel rotation. The press is equipped with two-hand palm buttons mounted on the machine at a distance of 20 inches from the point of operation.
To obtain the same antifreeze protection requires 76g of propylene glycol to replace each 62g of ethylene glycol. Calculate the mass of propylene glycol required to replace 7.00gal of ethylene glycol. The density of ethylene glycol is 1.12 .
The calorimeter had a heat capacity of 950.0 J °C-1. The temperature of the entire system rose from 25.30 °C to 26.59 °C. Calculate the heat of reaction, in kJ, per mole of KOH(aq).
Derive a frequency response curve for a low-pass RC filter in which R= 2.5 k ohms and C = 0.015 F. Cover a range of (Vp)0/(Vp)1 of 0.00I to 0.999. Plot (Vp)0/(Vp)i versus in f
The compound ZnI4 is best described as anions in a face-centered cubic unit cell with the cations in the tetrahedral holes. What is the density of this compound? The radius of I- is 216 ppm, and the molar masses are Zn = 65.4 g/mol, and I = 126.9
A solution is prepared by dissolving 0.535 g of NH4Cl in 250.0 ml of 0.080 M NH3. a. Calculate the pH of the above mixture. Kb = 1.8 x 10-5
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