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Statistics: A chemist performed a analysis of 5 replicate samples of NIST traceable certified materials, with these results: iron = 7.82 % + 0.09 % (wt/wt). The NIST certified value was 8.01 % (wt/wt) . Use a statistical test of significance to show whether or not the analyst found the "true" value. Use the 95% confidence level and clearly indicate the criterion value you use.
Calculate the amount of N2 gas released (in liters at 37° C and 1.5 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
What proportion of benzoic of benzoic should be used with an equimolar mixture of adipic acid and hexamethylene diamine to produce a polymer of 10,000 molecular weigh at 99.5% conversion?
What is the amount of CO2 produced in the analysis, in moles?
In one paragraph explain the benefits of colonialism on the people who were colonized and women and education.
what is the concentration m of ch3oh in a solution prepared by dissolving 16.8 g of ch3oh in sufficient water to give
Some chemists believe that satisfaction of the octet rule should be the top criterion for choosing the dominant Lewis structure of a molecule or ion.
One piece of copper jewelry at 108 degrees Celsius has exactly twice the mass of another piece, which is at 44 degrees Celsius. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the..
how many milliliters of 0.105 m hcl are needed to titrate each of the following solutions to the equivalence point--
What mass of calcium can be produced by this process if a current of 7300A is applied for 46h ? Assume that the electrolytic cell is 75% efficient.
The Haber-Bosch process is a very important industrial process. In the Haber-Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the equation
Evaluate the height of the waterfall if the water temperature is 0.213 C warmer at the bottom than the top. Gravitational potential energy is given by mgh where m is the mass of a given amount of water and h is the height of the water. Explain the..
The heat required to raise the temperature of a large cup of water (for coffee) from room temperature to boiling is approximately 100 kJ. Express this quantity of heat in kilocalories and British thermal units.
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