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Describe and explain the possible effect on your results of the following experimental errors or variations. In each case specify the component(s) whose percentage(s) would be too high or too low.
Oxygen gas is commonly sold in 40.5L steel containers at a pressure of 141 atm. What volume (in liters) would the gas occupy at a pressure of 1.05 atm if its temperature remained unchanged
A star is estimated to have a mass of 1 multiplied by 1036 kg. Assuming it to be a sphere of average radius 6.5 multiplied by 105 km, calculate the average density of the star in units of grams per cubic centimeter.
Current annual energy consumption in the US is 99.7 quads. Assume that all this energy is to be generated by burning CH4(g) in the form of natural gas
Breathalyzers determine the alcohol content in a person's breath by the following (unbalanced) redox reaction:
mole of He atoms at 25.0 degrees celsius and 1.000 atm pressure? Compare this with the literature value of 126.04 J/molK.
If sample of sodium is dropped into a container of water the reaction is 2Na +2H2O ---> 2NaOH +H2. If 10.4 g of hydrogen are produced, how many g of NaOH are also formed
Identify the two important classes of catalysts. Choose a catalyst that exists in the human body. Explain its importance and how it works.
Chlorine dioxide, ClO2, is a reddish yellow gas used in bleaching paper pulp. The average speed of a ClO2 molecule at 25 degrees Celsius is 306 m/s. What is the kinetic energy of a ClO2 molecule moving at this speed?
If, in a separate experiment, one-four as much enzyme and twice as much substrate had been combined, how long would it take for the same amount (24 ?mol) of product to be formed
NaHCO3 (aq) + H3C6H5O7 (aq) 3CO2 (g) + 3H2O (l) + Na3C6H5O7 (aq) If 1.10 g sodium bicarbonate and 1.10 g citric acid are allowed to react, how many grams of carbon dioxide will form.
How many moles of water can be produced from 14 moles of carbon dioxide. How many moles of CH4 will be produced along with 6 moles of water
Calculate the heat removal rate (kW) needed to produce 500 kg/h of dry ice at -78.4°C from a feed stream of CO2 (v) at 20°C.
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