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If you did reaction of zinc with 6 M HCl at 20C and at 50C. should you expect the reaction to be faster at the higher temperature? how much faster?
The half life of Iodine-131 is 8.0252 days. If 14.2 grams of I-131 is released in Japan and takes 31.8 days to travel across the Pacific
When alkynes are treated with sodium metal, NA, in liquid ammonia, sodium acts as a: A) Bronsted acid B) Bronsted base C) reducing agent D) catalyst and if possible why
A sample of H½O with a mass of 46.0 grams has a temperature of -58.0 C. How many joules of energy are necessary to melt 46.0 grams of ice? (Use 2.1 J/g.C for the specific heat of ice, and 334.4 J/g for the heat of fusion of water.)
An air bubble has a volume of 0.500 L at 18 degrees C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? a) 0 degrees C; b) 425 K; c) -12 degrees C; d) 575 K.
mt. kilimanjaro in tanzania is the tallest peak in africa 19340 ft.. on a particular day the barometric pressure at the
The density of a gaseous element at 310oC and 1.02 atm is 2.64 g/L. What is the molecular weight of the element
The vapor pressure of pure ethanol is 56 torr. if a solution prepared from 560.0 g of methanol and 210.0 g of ethanol has a vapor pressure of .31 atm over the soultion.
Determine at what temperature will a sample of air containing 5.0x10^14 Peroxyacetyl nitrate molecules per liter decomposes at the rate of 1.0x10^12 Peroxyacetyl nitrate molecules per liter per minute.
What are the advantages and disadvantages of using methanol, ehtanol and water as a solvent for reactions
For a particular chemical reaction deltaH = -5.5kJ and deltaS = -25J/K. Under what temperature condition is the reaction spontaneous
Draw a flame ionization detector FID using the following parts: column, flame, hydrogen, air, electrode, current meter
toothpaste contains 0.24% by mass sodium flouride used to prevent dental cavities. One tube contains 119g of toothpaste. How many moles of NaF are in the tube?
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