2 years ago

What state has similur soil composition and structer to michigan?

Chemistry

1 answer:

mojhsa [17]2 years ago

5 0

Most Northwestern soils are comparable and Ohio would be one in direct correlation

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A wooden artifact from an ancient tomb contains 60% of the carbon-14 that is present in living trees. How long ago was the artif

noname [10]

Answer:

The age of the sample is 4224 years.

Explanation:

Let the age of the sample be t years old.

Initial mass percentage of carbon-14 in an artifact = 100%

Initial mass of carbon-14 in an artifact = $[A_o]$

Final mass percentage of carbon-14 in an artifact t years = 60%

Final mass of carbon-14 in an artifact = $[A]=0.06[A_o]$

Half life of the carbon-14 = $t_{1/2}=5730 years$

$k=\frac{0.693}{t_{1/2}}$

$[A]=[A_o]\times e^{-kt}$

$[A]=[A_o]\times e^{-\frac{0.693}{t_{1/2}}\times t}$

$0.60[A_o]=[A_o]\times e^{-\frac{0.693}{5730 year}\times t}$

Solving for t:

t = 4223.71 years ≈ 4224 years

The age of the sample is 4224 years.

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2 years ago

Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape?

Juli2301 [7.4K]

Answer:

B. They both contain three atoms around the central atom.

Explanation:

Do the unit test on edg20 and got it right!

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3 years ago

What is the nuclear equation for decay of Am - 241

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Americium is a radioactive element .

It goes through alpha decay during nuclear reactions .

The nuclear reaction.is given by

$\rm {}^{241}_{95}Am\longrightarrow {}^{237}_{93}Np+{}^4_2\alpha$

Np stands for Nuptunium

Here alpha can be written as He too

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Which ones are physical change and which ones are chemical reactions:

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Physical change- evaporation , condensation
Chemical change- combustion , neutralization

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what biome has many nocturnal animals that burrow underground during the day that are active at night

hram777 [196]

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it could be maybe a raccoon or a possum

Explanation:

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2 years ago