State whether the entropy of the system increases or decreases and why, and whether the entropy of the surroundings increases or decreases and why:
a) system: a block of ice in a box at a temperature below freezing. the block of ice does not completely fill the box and the unfilled volume is vacuum. the box is not insulated. the change occurs when the block loses water molecules from its surface to form a low-pressure vapor in the unfilled volume of the box.
b) system: two h2 molecules and one o2 molecule in the gas phase. the change occurs when the h2 and o2 molecules react with each other to form two h2o molecules.
c) system: a lipid bilayer membrane in an aqueous solution with glucose molecules at 0.1 m concentration on one side and 0.01 m concentration on the other side. the change occurs when the glucose molecules on the low concentration side move to the high concentration side.
state whether the entropy of the system increases or decreases and whether the entropy of the surroundings increases or decreases and explain why. i haven't studied this information in a while and need to brush up! for your time!

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback

What is a metal replacement reaction