Acrystallographer measures the horizontal spacing between molecules in a crystal. the spacing is 15.22 nm . what is the total width of a crystal in millimeters 105 molecules across? write your answer as a decimal.

Infants born with severe respiratory problems are sometimes given liquid ventilation: they breathe a liquid that can dissolve more oxygen than air can hold. one of these liquids is a fluorinated compound, cf3(cf2)7br. the solubility of oxygen in this liquid is 66 mlo2 per 100 ml liquid. in contrast, air is 21 % oxygen by volume. calculate the moles of o2 present in an infant's lungs (volume: 12 ml ) if the infant takes a full breath of air. assume a pressure of 1 atm in the lungs.

What is the overall order of reaction for rate = k[no]2[o2]

Which of these conditions most likely produces an unstable isotope?