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34kurt
3 years ago
15

(a)

Chemistry
1 answer:
velikii [3]3 years ago
5 0

Answer:

Molecule?

Explanation:

I wanna say molecule, because all of the objects listed have that in common.

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When an oxygen atom forms an ion, it gains two electrons. Identify the electrical charge of the oxygen ion.
mel-nik [20]
"-2" is the electric charge of the oxygen ion among the following choices given in the question. It actually needs two electrons to complete the stable outer shell. The correct option among all the options that are given in the question is the third option or option "C". I hope that the answer has helped you.
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What happend to that mass when the forest burns?
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21) Amines, amides, and amino acids are categories of *
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Answer:

Organic compounds

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6 0
3 years ago
The balanced equation for combustion in an acetylene torch is shown below:
vichka [17]

Answer:

70mol

Explanation:

The equation of the reaction is given as:

                  2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O

Given parameters:

Number of moles of acetylene = 35.0mol

Number of moles of oxygen in the tank = 84.0mol

Unknown:

Number of moles of CO₂ produced = 35.0mol

Solution:

From the information given about the reaction, we know that the reactant that limits this combustion process is acetylene. Oxygen is given in excess and we don't know the number of moles of this gas that was used up. We know for sure that all the moles of acetylene provided was used to furnish the burning procedure.

To determine the number of moles of CO₂ produced, we use the stoichiometric relationship between the known acetylene and the CO₂ produced from the balanced chemical equation:

From the equation:

         2 moles of acetylene produced 4 moles of CO₂

          ∴ 35.0 mol of acetylene would produced:  

                               \frac{35 x 4}{2} = 70mol

6 0
3 years ago
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What does an algae cell, tree,mushroom, and animal have in common
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Each one is a living organism.
5 0
3 years ago
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