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AlexFokin [52]
3 years ago
5

What is the first step in this experiment?

Chemistry
2 answers:
mr_godi [17]3 years ago
7 0

Answer: Cut the card borad

Explanation:

allsm [11]3 years ago
5 0
Cutting the cardboard would be the first step
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What is the total number of hydrogen atoms contained in one molecule of (NH4)2C204?
Ber [7]

Answer:

=8 atoms

Explanation:

In (NH4)2C2O4 there are four moles of Hydrogen in the compound (NH4), but there two molecules of (NH4) in this compound.  That's what the 2 in (NH4)2 means, so multiply 4 x 2 = 8.

Hope this helps (:

8 0
3 years ago
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Which sample would serve as a better buffer and therefore a better environment for aquatic life?
Ann [662]

Answer:

sample A

Explanation:

the first one because of the ppm value

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2 years ago
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Observe as equações e de acordo com Brönsted-Lowry, os compostos destacados são, respectivamente
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answer

j'ai besoin d'aide

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7 0
2 years ago
Give the systematic names for the formulas or give the formulas for the names:
lilavasa [31]

Lead (II) acetate trihydrate is the systematic name for the formula Pb(C₂H₃O₂)₂ . 3H₂O.

<h3>What is Molecular Formula ?</h3>

The chemical formula that gives total number of atoms of each element in one molecule of a compound is called Molecular Formula.

<h3>What is Oxidation State ?</h3>

Oxidation state is also known as oxidation number. It is defined as the atom is equal to the total number of electrons which have been removed from the element in order to form chemical bond with other atom.

Now find the oxidation state of Pb in Pb(C₂H₃O₂)₂ .3H₂O

Assume the oxidation state of Pb in Pb(C₂H₃O₂)₂ .3H₂O be x

x + 2 × (-1) + 3 × 0 = 0

x - 2 + 0 = 0

x = 2

Oxidation state of Pb is +2 or (II)

Thus from the above conclusion we can say that The systematic name for the formula Pb(C₂H₃O₂)₂ .3H₂O is Lead (II) acetate trihydrate.

Learn more about the Molecular Formula here: brainly.com/question/15960587

#SPJ4

4 0
1 year ago
Which of the following is not a physical property of a liquid?
Usimov [2.4K]
Gas is not a liquid, hope this helps, o and next time you might wanna put the answer choices thanks
7 0
3 years ago
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