Chemistry, 25.11.2020 16:40, franklinkaylieg3873
⦁ An element has 3 isotopes. The table shows the mass number and the isotopic abundance of each isotope in a sample of this element. Calculate the relative atomic mass of this element. Give your answer to one decimal place
mass number 24
percentage abundance: 79.2
Answers: 3
Chemistry, 21.06.2019 19:10, PineaPPle663
Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?
Answers: 1
Chemistry, 22.06.2019 08:30, vanessadaniellet21
Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap
Answers: 1
Chemistry, 22.06.2019 11:50, tajanaewilliams77
If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.
Answers: 3
⦁ An element has 3 isotopes. The table shows the mass number and the isotopic abundance of each isot...
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