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3 years ago

Which of an atom's electrons are inrolved in chemical reactions?

Chemistry

2 answers:

Scrat [10]3 years ago

8 0

Answer:

Electrons at the outermost energy level of an atom are called valence electrons. They determine many of the properties of an element. That's because these electrons are involved in chemical reactions with other atoms. Shared electrons bind atoms together to form chemical compounds.

Explanation:

Sophie [7]3 years ago

3 0

Answer:

electrons farthest from the nucleus of the atom. they are called valence electrons

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Consider a sample of 10.0 g of the gaseous hydrocarbon C2H6 to answer the following question: How many moles are present in this

Masja [62]

Answer: The moles of given hydrocarbon is 0.3 moles

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of ethane = 10.0 g

Molar mass of ethane = $[(2\times 12)+(6\times 1)]=30g/mol$

We need to divide the given value by the molar mass.

Putting values in above equation, we get:

$\text{Moles of ethane}=\frac{10.0g}{30g/mol}=0.3mol$

In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 1.

Hence, the moles of given hydrocarbon is 0.3 moles

7 0

3 years ago

Which process lets convection plays a role in the water cycle?

Sergio039 [100]

The best and most correct answer among the choices provided by your question is the third choice or letter C.

Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection plays a role in the water cycle when " gases cycle up and down based on air pressure."

I hope my answer has come to your help. Thank you for posting your question here in Brainly.

5 0

3 years ago

Convert 5.8 km to the unit mm. 0.0000058 mm 0.0058 mm 5,800 mm 5,800,000 mm

spin [16.1K]

Its going to b 5,800,000 due to each Km being 1,000,000 Mm
Hope this helps :D

5 0

3 years ago

What are isoelectronic and isostructural species?

alexgriva [62]

Isoelectronic species are ions or elements that have equal number of electrons. From the root word, electron of the word isoelectronic. On the other hand, isotructural species are compounds with the same structures.Hope this answers the question.

8 0

4 years ago

Pls answer

Kitty [74]

Answer:

Kinetic energy to Electrical energy.

Explanation:

When stationary bike is pedaled the wheels of the bike rotates which is a form of kinetic energy, this kinetic energy can be converted into electricity when connected to a generator.

From _Kinetic_ energy to _Electrical_ energy.

7 0

3 years ago