The substance neon has the following properties: normal melting point: 24.5 k normal boiling point: 27.1 k triple point: 0.425 atm, 24.4 k critical point: 26.2 atm, 44.4 k a sample of neon at a pressure of 1.00 atm and a temperature of 55.9 k is cooled at constant pressure to a temperature of 26.9 k.
which of the following are true? choose all that apply

a. one or more phase changes will occur.
b. the final state of the substance is a solid.
c. the final state of the substance is a liquid.
d. the solid initially present will vaporize.
e. the sample is initially a gas.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

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