Question

A fossilized tree killed by a volcano was studied.it had 6.25% of the amount of carbon-14 found in a sample of the same sized tree that is alive today. when did the volcanic eruption take place

Answer 1

Using this information, we can calculate that the fossilized tree is approximately 2 half-lives old, which equals to approximately 11,460 years. The volcanic eruption took place approximately 11,460 years ago.

Step-by-step explanation:

The volcanic eruption took place approximately 11,460 years ago.

By comparing the amount of carbon-14 found in a fossilized tree with the amount of carbon-14 in a living tree of the same size, scientists can determine the age of the fossil.

The half-life of carbon-14 is 5,730 years, so if the fossilized tree had 6.25% of the amount of carbon-14 found in the living tree, it means that 93.75% of the carbon-14 had decayed.

Using this information, we can calculate that the fossilized tree is approximately 2 half-lives old, which equals to approximately 11,460 years.

Answer 2

There are a lot different kinds of volcanic activity and eruptions: phreatic eruptions, explosive eruption of high-silica lava, effusive eruption of low-silica lava, pyroclastic flows, lahars (debris flow) and carbon dioxide emission.

It concentrate of different volcanic gases can vary consider from one volcano to the next. Water vapor is typically the most abundant volcanic gas, followed by carbon dioxide and sulfur dioxide. Other main volcanic gases include hydrogen chloride, hydrogen sulfide, and hydrogen fluoride. A huge number of minor and trace gases are also found in volcanic emissions, for example, carbon monoxide, halocarbons, organic compounds, and volatile metal chlorides hydrogen.