6% (mole fraction) of SO2 and 12% of O2 was mixed with inert gas, reacted at 100kPa. Calculate the temperature that 80% of SO2 was transformed into SO3 at equilibrium. It is known that △H_m=-98.86kJ⋅1 mol-1,△_rS_m=-94.03J⋅mol^(-1)⋅K^(-1) . ...
The explosion characteristics of anthracite coal dust with/without small amount of CH4 (1.14 vol. %) were investigated by using a 20 L spherical explosion apparatus with an emphasis on the roles of oxygen mole fraction and inert gas. Two methods based on overpressure and combustion duration time...
What is the mole fraction of oxygen in the mixture containing 0.25 mol each of oxygen, hydrogen, and carbon dioxide at 298 K? In the reaction 2 CO + O2 -> 2 CO2, how many moles of carbon dioxide can be made from 0.125 moles of ox...
print('Enter species followed by volume fraction (e.g., nc7h16 0.2)') print('Hit return when complete.') specs = [] nums = [] while True: sp = None num = None while not num: try: line = raw_input('Entry: ') if not line: break sp, num = line.split() num = float(num...
Although this represents just a tiny fraction of 1 mole of water (~18 g), it contains more water molecules than can be clearly imagined. If the molecules were distributed equally among the roughly seven billion people on earth, each person would receive more than 100 billion molecules....
If 1 mole = mass of 1 gram, does it mean then that Au with 197g corresponds to 1 mole for every 1 gram? How to calculate relative atomic mass of oxygen? How to calculate mole fraction? Explain how to determine how many moles are in 20 grams of O2. What is ...
What is the mole fraction of water in 200 g of 95% (by mass) ethanol, C2H5OH? How many moles of H_2O are present in 86.3 grams of H_2O? How many moles of water are in 112 kg of water? What is the mass in grams of Br in 8.53 moles of FeBr_5? What is the mole fraction...
CONCLUSIONS: In captivity and in the field, male mole rats probably undergo an annual cycle of accessory gland tissue structural changes that are correlated with testosterone secretion. 展开 关键词: annual cycle fertility subterranean rodent cowper gland prostate light microscopy volume fraction ...
Thermal diffusion measurements have been made on the methane-n-butane system at two compositions, 0.40 and 0.49 mole fraction methane, in the pressure range from 1400 to 3000 lb./in.2. These measurements have been carried out in a single... WM Rutherford,JG Roof - 《Journal of Physical Ch...
The naked mole rat (NMR), Heterocephalus glaber, the longest-living rodent, provides a unique opportunity to explore how evolution has shaped adult stem cell (ASC) activity and tissue function with increasing lifespan. Using cumulative BrdU labelling and