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3 years ago

Help me I am stuck in science, click on this

Chemistry

2 answers:

Vinil7 [7]3 years ago

7 0

Do you own or can you just look up the Periodic Table of Elements? Literally all you need to do is count how many electrons there are and look for the number on the Periodic Table of Elements chart

Marta_Voda [28]3 years ago

4 0

First is hydrogen and second is oxygen

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How many moles of nitrogen, N, are in 62.0 g of nitrous oxide, N2O?

SSSSS [86.1K]

Answer- the estimated number is 4 moles but it actually is 3.86 moles
Explanation
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8 0

2 years ago

The enthalpy of combustion for octane (C8H18(l)), a key component of gasoline, is -5,074 kJ/mol. This value is the Delta. Hrxn f

Inessa [10]

Combustion can be defined as the reaction of a compound with oxygen. The enthalpy of combustion of octane is $\Delta H_{\rm rxn}$ for $\rm C_8H_{18}\;+\;25\;O_2\;\rightarrow 8\;CO_2\;+\;9\;H_2O$ .

<h3>What is the enthalpy of reaction?</h3>

The enthalpy of reaction is the amount of heat energy absorbed or lost by the molecules in the chemical reaction.

The enthalpy of combustion is the amount of heat energy released by the compound in the reaction with oxygen.

The reaction in which heat is liberated with the reaction of a compound with oxygen has an enthalpy of combustion, equivalent to the enthalpy of reaction.

The combustion of octane can be given as:

$\rm C_8H_{18}\;+\;25\;O_2\;\rightarrow 8\;CO_2\;+\;9\;H_2O$

Thus, the reaction has combustion energy equivalent to the enthalpy of the reaction is $\rm C_8H_{18}\;+\;25\;O_2\;\rightarrow 8\;CO_2\;+\;9\;H_2O$ . Thus, option B is correct.

Learn more about enthalpy of reaction, here:

brainly.com/question/1657608

6 0

2 years ago

What is the most viable solution for climate change

Korvikt [17]

Answer:

The Only Viable Solution: A New Moon Shot

The electric light bulb didn't appear from efforts to develop better candles or telling people to use less light.

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3 years ago

Where would you find water on the ph scale?

vladimir2022 [97]

Answer: between 6.5 and 8.5

Explanation:

As shown in my science book it appears in the ph scale

5 0

2 years ago

Oxygen would acquire a stable arrangement of electrons by bonding with two atoms of which of the following elements?

crimeas [40]

<span>D.) Oxygen would acquire a stable arrangement of electrons by bonding with two atoms of "Magnesium"
[ As Mg has 2 extra electrons & their size are quite similar ]

Hope this helps!</span>

7 0

3 years ago

Read 2 more answers