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melomori [17]
3 years ago
8

Please help it’s due today. I will give brainliest.

Chemistry
2 answers:
givi [52]3 years ago
8 0

Answer:

B.both conserve mass.

Tcecarenko [31]3 years ago
7 0

Answer:

both conserve mass

Explanation:

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3.
Vsevolod [243]

Answer:

2 half-lives=0.8

6 half-lives= 0.05

Explanation

Half-lives are constant and always decrease by half, implying that the concentration decreases by half at a consistent rate.

3.2/2= 1.6/2= 0.8 is two half-lives

3.2/2= 1.6/2= 0.8/2= 0.4/2= 0.2/2= 0.1/2=0.05 is six half-lives

3 0
3 years ago
The time it takes for a celestial body to make one complete turn on its axis is a(n)
frozen [14]

Answer:

About 24 hours

Explanation:

Think of it as Earths spin

4 0
3 years ago
Tiene los 4 lados iguales y los 4<br>ángulos rectos.​
azamat
Square espero que eso te ayude!
7 0
4 years ago
How does the surface metabolism model of chemical evolution differ from the prebiotic soup model? see section 2.4 ( page 70) ?
evablogger [386]

The surface metabolism model evokes mineral catalysts. Surface metabolism model dissolved gases in contact with minerals lining the walls of the deep-sea hydrothermal vents and formed more complex, organic molecules while Prebiotic soup model is molecules in atmosphere or from meteorites condensed in the ocean which led to the formation of more complex molecules.

3 0
3 years ago
(view the image) explain your answer please
geniusboy [140]
There is only one element with atomic mass 3 and it’s lithium and it only has 3 protons and 4 neutrons
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