The quote below was given in a 1941 speech by President Roosevelt: "Yesterday, December 7, 1941-a date which will live in infamy--the United States of America was suddenly and deliberately
attacked ...
Which of the following events does this quotation describe? (1 point)
Oa
the Allied troops' D-Day invasion of Normandy
Ob
Japan's attack on the U. S. naval base at Pearl Harbor
Oc
the aftermath of the Bataan Death March
Od
US troops' atomic bomb attack on Japan

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.