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aalyn [17]
2 years ago
8

A radioactive isotope has a half-life of 2.0 years. The fraction of a pure sample of the isotope

Chemistry
2 answers:
Hunter-Best [27]2 years ago
7 0

Answer:

its a. 1/8

Explanation:

Arisa [49]2 years ago
3 0
Answer:

1/8

Explanation:

Uhm whatever the guy said ^ yeah hope you pass
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what criteria are likely to dictate certain pairs of elements to undergo ionic bonding and others covalent bonding?
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If one element is a metal and the other element is a non metal

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Ionic bonds are formed between metals and non metals. The nonmetal atom receives electron(s) from a metal atom to form an ionic substance. This means that ionic substances are basically an ion pair.

Covalent bonds are mostly formed between two nonmetals. These elements share electrons with each other in order to form the compound.

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2 years ago
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Explanation:

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3 years ago
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Answer:

B. decay of dead marine organisms

Explanation:

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Most of the carbon dioxide consumed by plant plankton (phytoplankton) returns to the atmosphere when this phytoplankton dies or is consumed, but a portion is deposited in the ocean floor sediments when these small particles sink. This process is called a "biological bomb" because carbon dioxide is transported from the atmosphere to the ocean floor.

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3 years ago
What type of heat transfer is a beaker on a hot plate an example of?
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Heat transfer to a beaker on a hot plate is an example of conduction.

Explanation:

Conduction is a process where heat is transferred from one particle to another particle. Conduction is mainly possible in case of solids.In case of solids the atoms as well as the molecules are tightly packed through which the kinetic energy can easily pass. Conduction takes place when both the objects are touching each other. But in case of liquids molecules are loosely packed as a result convection takes place.

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