subject
Chemistry, 11.01.2021 21:20 roadrnr8970

Select each Eon that is part of the Precambrian Era (hint: there are 3) A. Archaen
B. Protozoic
C. Hadaen
D. Promethian

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 03:30
How many neutrons does a atom of cobalt have?
Answers: 2
question
Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
Answers: 3
question
Chemistry, 23.06.2019 00:30
Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
Answers: 2
question
Chemistry, 23.06.2019 01:30
Astudent states that 9.0 g of baking soda will form an unsaturated solution in 100 g of water. what do you need to know to decide whether this statement is correct? a. the temperature of the water and the molar mass of baking soda b. the percent by volume of the solution and the solubility of baking soda c. the temperature of the water and the solubility of baking soda at that temperature
Answers: 1
You know the right answer?
Select each Eon that is part of the Precambrian Era (hint: there are 3) A. Archaen
B. Protozo...
Questions
question
Mathematics, 10.12.2020 02:30
question
English, 10.12.2020 02:30
Questions on the website: 13722367