Chemistry, 17.10.2019 02:00, tiffanyrhoda
Which ideas held by the ancient greeks have been at least partially supported by scientific experiments, calculations, and observations made throughout history? check all that apply.
light is a wave or disturbance that travels through spaces in the air.
light is a substance carrying particles that flow from a light source.
light is a stream of rays that comes with great velocity from the eyes of an observer.
light is the result of rays that leave the eyes, reflect off an object, and interact with sunlight to become visible.
light is made of a combination of electric and magnetic fields that travel at the speed of light.
Answers: 3
Chemistry, 23.06.2019 01:00, kwarwick0915
If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?
Answers: 1
Chemistry, 23.06.2019 03:00, rhianna18
In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.
Answers: 1
Chemistry, 23.06.2019 08:00, Robinlynn228
Pl what kind of reaction is this? nahco3 + h2o → co2 + naoh + h2o -composition -decomposition -single replacement -double replacement im leaning more toward single replacement. if im wrong can you explain whyy?
Answers: 1
Which ideas held by the ancient greeks have been at least partially supported by scientific experime...
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