3. Classify the following errors if either Random or systematic error, if systematic specify how to reduce or eliminate such error in the conduct of the chemical analyses. Scenario Type of Error Measures to Eliminate or Reduce the effect (If systematic еrror) Fluctuations in environmental temperature Instrument was having R² of 0.9800 after calibration Unclean buret Vibrations of the building causing fluctuation in mass reading

If your numbers are precise but inaccurate, does it mean it might have been instrumental error? For my lab, I got an average of 8% error, all numbers close to each other. A question asks which was the possible major source of error. Since the numbers are precise but inaccurate, would this mean it is more likely an instrumental error? One of the scales only read two sig figs, which would make it more inaccurate overall. it was for ideal gas. %rsd: 5.08 std: 0.0043

SpaceX recently launched their Falcon Heavy rocket (Feb. 6, 2018). It is based on their existing Falcon 9 rocket. The Falcon 9 rocket has a first stage which is a 40 m high by 3.7 m diameter cylinder. This cylinder contains the fuel used to propel the rocket which consists of RP-1 (rocket propellant-1, high grade kerosene), and liquid oxygen, O2 (`). RP-1 is a complex mixture of hydrocarbons but let’s approximate it with a chemical composition of C12H26. The densities of the fuel are ρ (RP − 1) = 0.83 g cm3 ρ (liquid O2) = 1.141 g cm3 If the total volume available for the two tanks is contained in the 40 m high by 3.7 m diameter first stage, determine the volume of each individual tank that will provide the exact amount of RP-1 and oxygen for the reation (no limiting reagent) and take up the entire volume of the first stage. Here are some suggestions to guide you. 1. Write a balanced combustion reaction for C12H26 with O2. 2. Determine the ratio of the volumes of the individual RP-1…

Given that the collision diameter of helium is 2.15 Å, calculate the mean free path of helium at sea level (1.00 atm and 25°C) and in the stratosphere (4.00x10-3 atm and -24°C). at sea level 4.0 1.98e-7 m in the stratosphere 4.0 2.15e-10 X m Supporting Materials

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