Determine all of the possible mole ratios between K with (O2 and K2O) from this chemical equation: 4 K + O2 2 K2O
Determine all of the possible mole ratios between Cu with (S and Cu2S) from this chemical equation:
2 Cu + S Cu2S
Determine all of the possible mole ratios from this chemical equation:
Mg(ClO3)2 + MgCl2 + 3O2
Determine all of the possible mole ratios between Na and the following compounds:(Na2(SO4) and H2)
2 Na + H2(SO4) Na2(SO4) + H2

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

Label a-f based on the table using c for concentrated and d for dilute

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