Which statement provides the best evidence that matter may exist as tiny particles moving at random?

A) When 50 cm3 of ethanol is added to 50 cm3 of water, the total volume of the mixture obtained is 96 cm3.

B) When a bottle of ammonia is opened, the smell can be detected at the back of the laboratory.

C) During melting, the temperature of naphthalene remains constant.

D) A small volume of water produces a much larger volume of steam.

I need answhelpp

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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

Should be a or oklahoma.