Question 1 with 1 blank una estudiante / desear / hablar / con su profesora de biologĂa question 2 with 1 blank mateo / desayunar / en la cafeterĂa de la universidad question 3 with 1 blank (mĂ) / gustar / cantar y bailar question 4 with 1 blank los profesores / contestar / las preguntas (questions) de los estudiantes question 5 with 1 blank Âż(ti) / gustar / la clase de mĂșsica
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Physics, 23.06.2019 04:31, redrhino27501
The radioactive isotope of lead, pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. if 1 gram of this isotope is present initially, how long will it take for 80% of the lead to decay? (round your answer to two decimal places.)
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Physics, 23.06.2019 07:30, AllyJungkookie
5. why should the electrons be placed separate from each other (why not together)?
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Physics, 23.06.2019 18:30, marley5818
Meter is the si base unit for measuring length time mass volume
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