The following balanced equation shows the decomposition of water (H2O). According to the equation, how many oxygen atoms are in the reactants? 2 H2O 2H2 + O2

Answers

Answer 1

Answer:

Answer : The number of oxygen atoms present on reactant side are, 4

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

Decomposition reaction : It is defined as the reaction in which the larger molecule decomposes to give two or more smaller molecules as a product.

The given balanced chemical reaction is,

$2H_2O\rightarrow 2H_2+O_2$

From the balanced chemical reaction we conclude that, there 4 atoms of hydrogen and 2 atoms of oxygen present on both reactant side and product side.

Hence, the number of oxygen atoms present on reactant side are, 4

Answer 2

Answer: 2 atoms of oxygen are reactants.

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If you use half as many moles of reactant *then: you'll make twice as much money
the reaction won't happen
the reaction will release half as much heat
the reaction will absorb heat

Answers

The reaction will release half as much heat

Answer:

The reaction will release half as much heat

Explanation:

Because there are less reactants the amount of energy released will decrease. Because the reactants halves the amount of heat released also halves.

Imagine placing an ice cube in a bowl of hot soup. Would the heat energy transfer from the ince cube to the soup or from the soup to the ice cube? Explain your answer

Answers

Answer: from the soup to the ice

Explanation: The heat energy from the soup truly transfers to the ice cube when you put it in a bowl of hot soup. An object with a greater temperature will always transfer heat to an object with a lower temperature. In this instance, the hot soup has a higher temperature than the ice cube due to its higher thermal energy content. The ice cube melts as a result of the heat energy moving from the soup to it, and the soup cools as a result.

Which equation shows conservation of atoms?A) H2 + O 2 --> H2O
B) H2 + O 2 --> 2H2O
C) 2H2 + O2 --> 2H2O
D) 2H2 + 2O2 --> 2H2O

Answers

Answer: The equation showing conservation of atoms is $2H_2+O_2\rightarrow H_2O$

Explanation:

Every balanced chemical equation follows law of conservation of mass.

This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This also means that total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.

For the given chemical equations:

Option A:

The given chemical equation follows:

$H_2+O_2\rightarrow H_2O$

There are 2 hydrogen atoms and 2 oxygen atoms on the reactant side and 2 hydrogen and 1 oxygen atom on product side.

So, this equation does not show conservation of atoms.

Option B:

The given chemical equation follows:

$H_2+O_2\rightarrow 2H_2O$

There are 2 hydrogen atoms and 2 oxygen atoms on the reactant side and 4 hydrogen atoms and 2 oxygen atoms on product side.

So, this equation does not show conservation of atoms.

Option C:

The given chemical equation follows:

$2H_2+O_2\rightarrow H_2O$

There are 4 hydrogen atoms and 2 oxygen atoms on the reactant side and 4 hydrogen atoms and 2 oxygen atoms on product side.

So, this equation shows conservation of atoms.

Option D:

The given chemical equation follows:

$2H_2+2O_2\rightarrow 2H_2O$

There are 4 hydrogen atoms and 4 oxygen atoms on the reactant side and 4 hydrogen atoms and 2 oxygen atoms on product side.

So, this equation does not show conservation of atoms.

Hence, the equation showing conservation of atoms is $2H_2+O_2\rightarrow H_2O$

During nuclear fission and fusion, what is matter that seems to disappear actually converted into?mass
energy
volume
nuclei

Answers

Hi! The answer is Energy. I hope this helped, Goodluck :)

my best guess is energy

If an atom has 3 protons, what is its atomic number?

Answers

Answer:

Atomic Number = 3.

Explanation:

The number of protons determines the atomic number. Basically the number of protons is the exact same as the atomic number.

Protons 3 = Atomic number 3

Which reactant is common to many burning reactions?

Answers

Answer:

Combustion reactions must have oxygen as a reactant. Note that the water that is produced is in the gas rather than the liquid state because of the high temperatures that accompany a combustion reaction.

Explanation:

NOT MY WORK! HOPE THIS HELP!

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