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cestrela7 [59]
3 years ago
13

What is the first anmial

Chemistry
1 answer:
denpristay [2]3 years ago
8 0
The first animal was called the comb jelly
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b)Elemental boron (as a gas) is produced in one industrial process by heating diboron trioxide with magnesium metal, also produc
dlinn [17]

<u>Answer:</u> The unbalanced chemical equation is written below.

<u>Explanation:</u>

Unbalanced chemical equation does not follow law of conservation of mass.

In an unbalanced chemical equation, total number of individual atoms on the reactant side will not be equal to the total number of individual atoms on the product side.

The chemical equation for the reaction of diboron trioxide and magnesium metal follows:

B_2O_3(s)+Mg(s)\rightarrow B(g)+MgO(s)

Hence, the unbalanced chemical equation is written above.

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3 years ago
Which is the following will have the highest vapor pressure
Alexus [3.1K]

There is no list, but possibly evaporation.

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2 years ago
As two chlorine atoms combine to form a molecule, energy is
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B. released, forming bonds usually releases energy.
6 0
2 years ago
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If you start with 1.000 gram sample of the isotope how much time would pass before you have just 0.100 grams of the isotope left
Vadim26 [7]

Answer:

So, you're dealing with a sample of cobalt-60. You know that cobalt-60 has a nuclear half-life of

5.30

years, and are interested in finding how many grams of the sample would remain after

1.00

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10.0

years, respectively.

A radioactive isotope's half-life tells you how much time is needed for an initial sample to be halved.

If you start with an initial sample

A

0

, then you can say that you will be left with

A

0

2

→

after one half-life passes;

A

0

2

⋅

1

2

=

A

0

4

→

after two half-lives pass;

A

0

4

⋅

1

2

=

A

0

8

→

after three half-lives pass;

A

0

8

⋅

1

2

=

A

0

16

→

after four half-lives pass;

⋮

Explanation:

now i know the answer

6 0
2 years ago
Please help will give points<br>Match the type of thermal energy with the letters on the drawing​
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A: radiation

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