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Alchen [17]
3 years ago
6

1 webbed feet 2wing structure 3beaks 4 eye color

Chemistry
2 answers:
malfutka [58]3 years ago
7 0
I believe it's webbed feet
antoniya [11.8K]3 years ago
7 0

Explanation:

webbEd feeetttttt ...........

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How many moles are in 6.80 x 10^23 atoms <br> of gold, Au?
frosja888 [35]

Answer:

1.13 moles Au

Explanation:

Moles Au = 6.80x10²³atoms / 6.023x10²³atoms/mole = 1.13 moles Au

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An atom has the electron arrangement 2,8. What will it do to gain a full
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The answer is B) gain 8 electrons
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For which of the following activities might you want to hire a chemist?
Basile [38]

Answer:

OPTION (A) : Testing a rock sample for gold content

Explanation:

For testing a rock sample of gold content you will need a Chemist. To test the material, the sample is rubbed on black stone which will leave a mark on the stone. This mark is tested by applying aqua fortis i.e nitric acid on the mark. If the mark gets dissolve then the material is not gold. If the mark sustain the it is further tested by applying aqua regia i.e nitric acid and hydrochloric acid which will prove the sample is of gold if it gets dissolve on using hydrochloric acid. The purity of the sample can be checked by differing the concentration of the aqua regia and comparing it with the gold material of the known purity.

7 0
3 years ago
Read 2 more answers
The half-life of cesium-137 is 30 years. Suppose we have a 200-mg sample. (a) Find the mass that remains after t years.
scZoUnD [109]

Given:

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Now we know that

A= A0/ [2 ^ (t/√t)]

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A0 is the initial mass

t is the time

t^1/2 is the half life

Substituting the given values in the above equation we get

A= [200/ 2^(t/30) ] mg


Thus the mass remaining after t years is [200/ 2^(t/30) ] mg

5 0
3 years ago
Can one atom in this type of reaction win the "tug of war"? What might happen if it did?
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7 0
3 years ago
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