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The average speed of a nitrogen molecule at 20oC is 515 m/sec. How many minutes will it take the nitrogen molecule to cover exactly 20 km?
how many kilojoules and kilocalories of heat are required to raise 40.0 g of water from -12 degrees Celsius to 130 degrees Celsius?
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
What is theoretical yield of nitrogen monoxide in grams d. How many moles of excess reactant remain e. What is the % yield of the reaction
how much heat must be added to 36.2g sample of iron to increase its temperature by 250.0 degree C.
A student takes 148. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3 How many moles of AlCl3 are formed?
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) ->2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
Hydrogen has two naturally occurring isotopes 1H (mass= 100783), and 2H (mass= 2.0140). If the atomic weight of hydrogen is given as 1.0079, which one is the more abundant isotope
How do I calculate the product distribution calculations of the three peaks? Or the product ratios? The first peak was at 0.600, second at 0.95. Those are the retention times
How many days would be required for a dose of Cu-64 to decay to 1.0% of its original concentration?
Calcium sulfide has a face-centered cubic unit cell with calcium ions in octahedral holes. If the radius of sulfide ion is 184pm and the density of CaS is 2.60 g/cm3.
suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 65.0 g aluminum block. If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol?
find out the molecular formula and empirical of this compound and determined to contain 4.36 grams of phosphorus and 5.64 grams of oxygen
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