Chemistry, 10.06.2021 02:30, kennydenny4897
A student placed a black piece of construction paper in the sunlight. She placed a thermometer under the paper and measured the temperature every 10 minutes for 50 minutes. The graph below shows her results.
Which of the following best explains her results?
A. Many wavelengths of electromagnetic radiation are transmitted by the paper and are converted to ultraviolet radiation.
B. Many wavelengths of electromagnetic radiation are reflected by the paper and are converted to infrared radiation.
C. Many wavelengths of electromagnetic radiation are absorbed by the paper and are converted to infrared radiation.
D. Many wavelengths of electromagnetic radiation are refracted by the paper and are converted to ultraviolet radiation.
Answers: 1
Chemistry, 22.06.2019 07:30, gwenparks
Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1
Answers: 1
Chemistry, 22.06.2019 12:30, AnastasiaJauregui
Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together
Answers: 1
Chemistry, 22.06.2019 22:30, creepycrepes
Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility
Answers: 1
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