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(a) Place the following gases in order of increasing average molecular speed at 300 K: CO, SF6, H2S, Cl2, HBr.
(b) Calculate and compare the rms speeds of CO and Cl2 molecules at 300 K.
(c) Calculate and compare the most probable speeds off CO and Cl2 molecules at 300 K.
A system absorbs 295 kJ of heat and the surroundings do 177 kJ of work on the system. What is the change in internal energy of the system?
To help you explain your answer, look up the meaning of "isoelectric point" and discuss the effect that pH will have on the structure of your product.
Question- A solution prepared by mixing 46.9 mL of 0.220 M AgNO3 and 46.9 mL of 0.220 M TlNO3 was titrated with 0.440 M NaBr in a cell containing a silver indicator
Assuming the value of Ea calculated from the 36-degree drop and that the rate of breakdown is first order with a half-life at 25 °C of 2.7 years, calculate the half-life for breakdown at a temperature of -15 °C.
Assuming 100% trapping efficiency because no weight gain was observed in a second Tenax tube placed in series after the first, what was the contaminant concentration in the air in ppm. The ambient temperature was 18 degrees C and pressure was 750 ..
You are checking the accuracy of a volumetric flask marked 10.00 mL. You measure the volume of water contained in the flask by measuring the mass of the empty flask
For each reaction, identify the substance being oxidized and the substance being reduced. Express answers as chemical formulas for oxidized and reduced answers. 1. 2Sr(s)+O2(g)----->2SrO(s) 2. Ca(s)+Cl2(g)---->CaCl2(s) 3. Ni^2+(aq)+Mg^2+(aq)+Ni(s)
The heat capacity of a calorimeter is found to be 5.68 kJ°C-1. While a1.652-g sample of glucose, C6H12O6, is burned in the calorimeter, the temperature of the calorimeter increases from24.56°C to 29.10°C. Compute the ΔH for the following reaction
If the thickener is operated in a steady state mode so that 30 m3/hr of flow exits as the overflow, and this overflow has a solids concentration of 25 mg/L, what is the underflow solids concentration, and what is the recovery of the solids in the ..
a balloon is filled to a volume of 7.00 times 102 ml at a temperature of 20.0 degrees celcius. the balloon is then
What mass of K2CO3 is needed to prepare 200 mL solution of a solution having a potassium ion concentration of 0.150 M
Problem- The formation of glucose from water and carbon dioxide is one of the more important chemical reactions in the world. Plants perform this reaction through the process of photosynthesis, creating the base of the food chain.
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