Chemistry, 28.08.2019 07:00 gbrightwell
49 after decaying for 48 hours, l/16 of the original mass of a radioisotope sample remains unchanged. what is the half-life of this radioisotope?
(1) 3.0 h (3) 12 h(2) 9.6 h (4) 24 h
Answers: 1
Chemistry, 22.06.2019 11:00
The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?
Answers: 1
Chemistry, 22.06.2019 15:30
Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) β co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)
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Chemistry, 22.06.2019 22:30
Which one of the following bonds would you expect to be the most polar? a) bβh b) nβh c) pβh d) alβh e) cβh
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49 after decaying for 48 hours, l/16 of the original mass of a radioisotope sample remains unchanged...
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