sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased out because of its potential to cause cancer, has a mass of 40.55 gg and a volume of 25.0 mLmL at 25 ∘C∘C. What is its density at this temperature? Express your answer with the appropriate units. nothingnothing SubmitRequest Answer Part B Will tetrachloroethylene float on water? (Materials that are less dense than water will float.) Will tetrachloroethylene float on water? (Materials that are less dense than water will float.) tetrachloroethylene float on water tetrachloroethylene will sink on water SubmitRequest Answer Part C Carbon dioxide (CO2CO2) is a gas at room temperature and pressure. However, carbon dioxide can be put under pressure to become a "supercritical fluid" that is a much safer dry-cleaning agent than tetrachloroethylene. At a certain pressure, the density of supercritical CO2CO2 is 0.469 g/cm3g/cm3. What is the mass of a 25.0-mLmL sample of supercritical CO2CO2 at this pressure? Express your answer with the appropriate units.

Nanotechnology, the field of trying to build ultrasmall structures one atom at a time, has progressed in recent years. one potential application of nanotechnology is the construction of artificial cells. the simplest cells would probably mimic red blood cells, the body's oxygen transporters. for example, nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person's bloodstream. if the person needed additional oxygen-due to a heart attack perhaps, or for the purpose of space travel-these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. suppose that the nanocontainers were cubic and had an edge length of 24 nanometers. part a part complete what is the volume of one nanocontainer? (ignore the thickness of the nanocontainer's wall.) express your answer using two significant figures. v v = 1.4ă—10â’20 l previous answers correct significant figures feedback: your answer 1.3824â‹…10â’20 = 1.382ă—10â’20 l was either rounded differently or used a different number of significant figures than required for this part. if you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer. part b suppose that each nanocontainer could contain pure oxygen pressurized to a density of 81 g/l . how many grams of oxygen could be contained by each nanocontainer?

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom