Dr. Harley Davidson, a geologist for the University of Oklahoma, is backpacking in western Arizona when he discovers a unique, yet unknown substance. Back at his lab Dr. Davidson
measures the mass of the substance to be 35.6 grams. He then places substance in a
graduated cylinder with an initial reading of 100 mL of water which raises the water level to
115.75 ml.
Substance Density
Silicon 2.33 g/mL.
Carbon 2.26 g/mL
Iron 7.87 g/mL
Cadmium 8.65 g/mL
Using the information available to Dr. Davidson, determine the identity of the unknown
substance.
(1 Point)
A. Silicon
B. Carbon
O C. Iron
D. Cadmium

False because saturated fatty acids contain only single bond

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

Dis the answer : ) good luck