1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
cestrela7 [59]
3 years ago
9

How many electrons are in the nucleus of an aluminum atom?

Chemistry
2 answers:
Gala2k [10]3 years ago
6 0

Answer:

13.

Aluminium-27 is an isotope of aluminium characterized by the fact that is has a mass number equal to  27 .

Now, an atom's mass number tells you the total number of protons and of neutrons that atom has in its nucleus. Since you're dealing with an isotope of aluminium, it follows that this atom must have the exact same number of protons in its nucleus.

The number of protons an atom has in its nucleus is given by the atomic number. A quick looks in the periodic table will show that aluminium has an atomic number equal to  13 .

This means that any atom that is an isotope of aluminium will have  13

protons in its nucleus.

Since you're dealing with a neutral atom, the number of electrons that surround the nucleus must be equal to the number of protons found in the nucleus.

Therefore, the aluminium-27 isotope will have  13  electrons surrounding its nucleus.

Finally, use the known mass number to determine how many neutrons you have  mass number  =  no. of protons  +  no. of neutrons

no. of neutrons  =  27  −  13  =  14

DaniilM [7]3 years ago
4 0

Answer:

13

Explanation:

You might be interested in
When two monosaccharides condense to form a disaccharide, what is the other product of the reaction? enter the molecular formula
koban [17]

When two monosaccharides combine to make a disaccharide, water is the byproduct.

<h3>What are monosaccharides ?</h3>

The most fundamental building blocks from which all carbohydrates are constructed are monosaccharides, commonly known as simple sugars. They are the most basic types of sugar. They are typically crystalline solids, colorless, and soluble in water.

These three monosaccharides—glucose, fructose, and galactose—are crucial for nutrition. Six carbon atoms, twelve hydrogen atoms, and six oxygen atoms make up each single sugar molecule.

To learn more about monosaccharides from the given link:

brainly.com/question/13416862

#SPJ4

4 0
1 year ago
___∆ 1. Erosion is / is not caused by water, ice, wind, chemicals, and sand. (pick one)
svlad2 [7]

Answer:

1. Chemicals

2. Erosion

3. Solids

4. Expands

5. Chemical

6. Arch

7. Sand

8. Surface

Explanation:

7 0
3 years ago
Please can someone explain the differences in variables (e.g. control variable, Independent variable and Dependent variable). I
7nadin3 [17]

Answer:

Independent Variable: The thing in an experiment which is changed.

Dependent Variable: The thing in an experiment which is affected by the change. (In other words, it's affected by the independent variable.)

Control Variable: The other factors of the experiment that remain unchanged.

For example, say you want to do an experiment about the effects of water on plant height. So, the independent variable, or the thing that is changed would be the amount of water, and the dependent variable would be the plant height, as the plant height is directly affected by the independent variable. Lastly, for this to be a fair experiment, there must be control variables. For example, all of the plants should be put in a room with equal temperature, they should get the same amount of sunlight, etc.

I hope this answers your question- feel free to ask me if you need any more help.

3 0
3 years ago
Read 2 more answers
What are some of the benefits of using measurements to find density? Provide 2 each. What are some of the challenges of using me
stellarik [79]

Some of the benefits of using measurements to find density include the following:

  • It is easy and doesn't require experiments.
  • The volume of both light and dense molecule can be gotten.

Some of the challenges of using measurements to find density include the following:

  • Inconsistency in the grind setting
  • Temperature changes not taken into account.

<h3>What is Density?</h3>

This is defined as the mass per unit volume of a substance or te degree of compactness of a substance and can be gotten with the use of measurements or experiments.

The measurement doesn't take the temperature changes into consideration which will lead to the result being most likely incorrect. It is also advantageous because less time is used thereby making it easier.

Read more about Density here brainly.com/question/406690

#SPJ1

7 0
2 years ago
1.) which of these is the balanced equation for this reaction?
horsena [70]

Answer:

1.D) CH4 + 2O2 → CO2 + 2H2O

2C)2,1,2

3.D)SIO2 + 4HF → SIF4 + 2H2O

4.D)2As + 6NaOH → 2Na3AsO3 + 3H2

5.C)SiCI4 + 2H2O → SiO2 + 4HCI

Explanation:

equal number of atoms of each elements in both the sides of the chemical equation is required to have an equation in balanced state.

6 0
3 years ago
Other questions:
  • What is the means by which atoms form chemical bonds?
    14·1 answer
  • What is the difference between an ionic bond and a covalent bond?
    13·1 answer
  • A jet airplane reaches 750 km/h on a certain flight. What distance does it cover in <br> 10 min?
    7·2 answers
  • You just got home from a run on a hot Atlanta afternoon. You grab a 1.00 liter bottle of water and drink three quarters of it in
    13·1 answer
  • Is this statement true or false? Ammonia is a base. A. True B. False
    11·2 answers
  • Question 1 (1 point)
    8·1 answer
  • The circles, or orbits, for electrons are called energy levels. Each level can hold only a certain number of electrons. Add elec
    8·1 answer
  • The total number of protons and neutrons in the nucleus of an atom is called the___________
    9·1 answer
  • How many neutrons does the element Platinum (Pt) have?
    10·1 answer
  • A submarine fills a special storage area known as ballast with water in order to increase its density. This allows it to dive de
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!