(a) two of the simplest compounds containing just carbon and hydrogen are methane and ethane. given that methane contains 0.3357 g hydrogen for every 1.00 g carbon and that the ratio of g hydrogen/1.oo g carbon in methane to g hydrogen/1.oo g carbon in ethane is 4: 3, determine the number of grams of hydrogen per gram of carbon in ethane. (b) xenon (xe) and fluorine (f) can combine to form several different compounds, including xef2, which contains 0.2894 g fluorine for every gram of xenon. use the law of multiple proportions to determine n, which represents the number of f atoms in another compound, xefn, given that it contains 0.8682 g of f for every gram of xe.

Nonmetal are moldable and easily shaped

Use the universal gas law formula: pv = nrt now, the key word in this problem is stp, so at stp, temperature will always be 0 degrees celsius and pressure will always be 1.0 atm or 760 torr. given something is at stp, we already know the two variables pressure and temperature. the other thing we can find with the given information is moles. to find moles, just divide grams by molar mass of the element. 16.0g / 2(16.00)g/mol = 0.5 moles plug the values in to the equation pv = nrt (1.0 atm)( x ) = (0.5 )(0+273=273k) the r value is just a constant for when we use atm, liters, moles and kelvin. i'm assuming you want your answer in liters, but if you dont just move the decimal 3 to the right in your final answer. so when plugging these numbers in to your calculator and trying to find x, you get 11.20665 liters using significant figures the answer is 11.2 liters