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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.
Explain how long will it take in seconds for the water to reach boiling. At approx. Define what time does the water first begin to boil. Compute q for water and the pan and remember density
How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0^\circ C, to steam at 110^\circ C. The heat capacity of ice is 2.09 {\rm J}/{\rm g} ^\circ {\rm C} and that of steam is 1.84
Compounds like CCl2F2 are known as CFCs and were once widely used as refrigerants. Breaking down of these molecules in the atmosphere releases Cl atoms
A 0.8102g sample of impure Al2(CO3)3 decomposed by HCl; liberated CO2 was collected on CaO and found to weigh 0.0515g. Compute the percentage of Al in the sample.
why would paraformaledhyde be used in an acetal formation reaction than formaldehyde(Bp=-6*C) which is commercially available as a 37% aqueous solution?
How many minutes will it take to plate out 2.19 g of chromium metal from a solution of Cr3+ using a current of 35.2 amps in an electrolytic cell?
The human eye is able to detect as little as 2.35 × 10-18 J of green light of wavelength 510 nm. Calculate the minimum number of photons of green light that can be detected by the human eye. Physical constants can be found here.
Problem- The pKb values for bibasic base B are pKb1= 2.10 and pkB2= 7.39, calculate the pH at the flowing points in titration of 50.0mL of a .55M B with .55M HCl.
to determine the partial pressure and the total pressure using daltons law of partial pressures.a mixture of gases
The KsP of cadmium hydroxide, Cd(OH)2, is 7.20*10-15. calculate the molar solubility of this compound.
If 24.88 mL of a 0.01229 M EDTA solution is required to titrate the Ca2+ and Mg2+ in a 30.00mL water sample. Explain what is the water hardness level in ppm. Explain the molecular weight of CaCO3 is 100.1 g/mole
The uncertainty in a reported temperature is +/- 0.5 degrees Fahrenheit. What is the uncertainty in degrees Celsius?
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