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Determine the molar mass of Na2O.
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Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical formula of C2H5O2.
Rank the samples of gas described in the table below in order of increasing average speed of the atoms or molecules in them.That is, select "1" next to the sample in which the atoms or molecules have the slowest average speed. Select "2" next to the sample in which the atoms or molecules have the next slowest average speed, and so on.
10.) In a Dumas experiment to determine the molar mass of a substance, it was found that a 4.00 gram of the vapour occupies 250.0 mL at STP. Calculate the molar mass of the substance.
132 PROPOS22: Determining the Molar Mass of Co2 e) Determine the mass of air displaced by the inflated balloorn (0 Determine the measured mass of the CO2 in the balloon. (g) Determine the actual mass of the CO2 in the balloon. (h) Determine the molar mass of Co, () Determine the percent error in your calculated molar mass for CO2, based on the theoretical value of 44.01 g/mol. eriment, except following data: e mass of a CO2 gas sample collected...
Hi! I really need help:) a) What is the average molar mass of a mixture of gases if 34.6g occupy 45.6L at 57.9 degrees C and 1045 mmHg? b) Determine the liters of Oxygen needed for the complete combustion of 769g of benzene (C6H6) if the teaction is run at 23.5 degrees C and 765mHg? 42. What is the average molar mass of a 57.9°C and 1045mmHg? af mass of a mixture of pases if 34.6g occupy 45.0L 43. Determine...
Average and Uncertainty The molar mass of an unknown compound was determined in three repeat experiments. The molar masses obtained were 84.98, 82.56 and 83.90 g/mol. Assume the uncertainty in the average value to be the half range. Enter the average value and its uncertainty, both rounded to the appropriate number of digits (according to the Rules outlined in the Chem121 Lab Manual Appendix). + g/mol Submit Answer Tries 0/5
We were suppose to calculate the molar mass and then average that. After, calculate the standard deviation in molar mass and determine the unknown acid and it’s percent error. We did three runs and the numbers recorded are the mass of the unknown acid, initial and final burst readings, and the volume of NaOH solution. How do I do this? Dete talieckar iobh t peed Wso hre n the wo mev