Chemistry, 03.09.2021 18:00 haydenbell269
An asteroid floating through space was recently landed on by a NASA drone. The drone took a sample of the rock layers and found 1/32 of the original Rubidium-87 in the rock layer. The half-life of Rubidium-87 is 48.8 Billion year. How old is the rock?
Answers: 2
Chemistry, 22.06.2019 10:50
8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm
Answers: 1
Chemistry, 22.06.2019 11:30
Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?
Answers: 2
Chemistry, 22.06.2019 14:30
Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous
Answers: 1
An asteroid floating through space was recently landed on by a NASA drone. The drone took a sample o...
Mathematics, 24.11.2020 07:30
Business, 24.11.2020 07:30
Mathematics, 24.11.2020 07:30
Mathematics, 24.11.2020 07:30
Biology, 24.11.2020 07:30
English, 24.11.2020 07:30
English, 24.11.2020 07:30
Mathematics, 24.11.2020 07:30