The reaction ab(aq)→a(g)+b(g) is second order in ab and has a rate constant of 0.0164 m −1 ⋅ s −1 at 25.0 ∘ c . a reaction vessel initially contains 250.0 ml of 0.104 m ab which is allowed to react to form the gaseous product. the product is collected over water at 25.0 ∘ c . part a how much time is required to produce 142.0 ml of the products at a barometric pressure of 707.3 mmhg . (the vapor pressure of water at this temperature is 23.8 mmhg .)

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes.which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature.sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

Why does asexual reproduction result in offspring with identicle genetic variation

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.