Chemistry, 24.02.2020 18:08, jordanjones022
Suppose you find a rock originally made of potassium-40, half of which decays into argon-40 every 1.25 billion years. You open the rock and find 7 atoms of argon-40 for every atom of potassium-40. How long ago did the rock form?
Answers: 2
Chemistry, 22.06.2019 01:00, angelteddy033
Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.
Answers: 2
Chemistry, 22.06.2019 01:30, montoyaricardo3550
Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j
Answers: 2
Chemistry, 22.06.2019 21:00, melissalopez12
Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point
Answers: 1
Suppose you find a rock originally made of potassium-40, half of which decays into argon-40 every 1....
History, 20.10.2020 20:01
History, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01
Chemistry, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01