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2 years ago

Read the scenario.

Chemistry

2 answers:

stich3 [128]2 years ago

8 0

Answer : The balanced chemical reaction will be:

$2H_2+O_2\rightarrow 2H_2O$

Explanation :

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

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

As per question, when 2 molecules of hydrogen gas and 1 molecule of oxygen gas react to yield 2 molecules of water.

The balanced chemical reaction will be:

$2H_2+O_2\rightarrow 2H_2O$

irakobra [83]2 years ago

5 0

2H2+O2→2H2O
We have to be aware that the number of atoms are the same on both reactant side and product side.

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If i increase the [h+] of a solution by 10x, how much will the ph change? and in what direction will ph change?

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For example...
You have solution with [H+] = 0,01M
>>>> pH = -log[H+] = -log0,01 = 2

And you increase the [H+] by 10x ---> 0,01×10 = 0,1M
>>>> pH = -log0,1 = 1

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3 years ago

If I have 12 protons, how many neutrons and electrons would I need to make a stable atom?

lesantik [10]

Answer:

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Explanation:

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2 years ago

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a ______.

AleksAgata [21]

Answer:

Catalyst

Explanation:

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a catalyst.

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2 years ago

Two positively charged objects (N pole) are separated by a large distance. One of the positively charged objects (N pole) is rep

Eddi Din [679]

Answer:

Explanation:

Applying law of electrostatic which states that like charges repel each other and unlike charges attract each other

N and S are unlike charges that turn and make the former repulsive force (due to two like charges N and N)to reduce and attractive force between N and S to increase

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3 years ago

A 215-g sample of copper metal at some temperature is added to 26.6 g of water. The initial water temperature is 22.22 oC, and t

andrezito [222]

The initial temperature of the copper metal was 27.38 degrees.

Explanation:

Data given:

mass of the copper metal sample = 215 gram

mass of water = 26.6 grams

Initial temperature of water = 22.22 Degrees

Final temperature of water = 24.44 degrees

Specific heat capacity of water = 0.385 J/g°C

initial temperature of copper material , Ti=?

specific heat capacity of water = 4.186 joule/gram °C

from the principle of:

heat lost = heat gained

heat gained by water is given by:

q water = mcΔT

Putting the values in the equation:

qwater = 26.6 x 4.186 x (2.22)

qwater = 247.19 J

qcopper = 215 x 0.385 x (Ti-24.4)

= 82.77Ti - 2019.71

Now heat lost by metal = heat gained by water

82.77Ti - 2019.71 = 247.19

Ti = 27.38 degrees

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3 years ago