Chemistry, 28.02.2020 19:39 impura12713
Why would a goose down jacket help keep a person warm on a cold day? Goose down allows heat to flow from colder to hotter locations. Goose down keeps body heat moving from one section of the body to another. Goose down slows the transfer of body heat to the cold air. Goose down is extremely lightweight and thus heats the body.
Answers: 1
Chemistry, 21.06.2019 13:50
An engineering team designs a new rocket that is faster and lighter than any other model being produced. however, the materials end up being so expensive that no company can afford to buy them. which step of the engineering process should have addressed this problem? a. know the background. b. evaluate the results. c. identify a need. d. do the work.
Answers: 2
Chemistry, 21.06.2019 14:40
Water ionizes by the equation h2o(l)⇌h+(aq)+oh−(aq) the extent of the reaction is small in pure water and dilute aqueous solutions. this reaction creates the following relationship between [h+] and [oh−]: kw=[h+][oh−] keep in mind that, like all equilibrium constants, the value of kw changes with temperature.
Answers: 1
Chemistry, 22.06.2019 08:30
In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?
Answers: 2
Chemistry, 22.06.2019 18:00
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
Answers: 1
Why would a goose down jacket help keep a person warm on a cold day? Goose down allows heat to flow...
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