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
Angelina_Jolie [31]
2 years ago
10

How is the number of electrons in an element determined?

Chemistry
2 answers:
scoray [572]2 years ago
6 0

Answer:

By finding the number of protons

Explanation:

Keep in mind when trying to find the number of electrons of a element, the number of electrons also equals the number of protons. In order to find the number of protons in the element simply find it's atomic number.

Example:

Find the number of electrons in the element iron.

Fe (Iron)

Fe's atomic number is 26

Protons/electrons = 26

Hope this helps.

elixir [45]2 years ago
3 0

The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.

You might be interested in
For the reaction
s2008m [1.1K]

Answer:

0.558mole of SO₃

Explanation:

Given parameters:

Molar mass of SO₃ = 80.0632g/mol

Mass of S = 17.9g

Molar mass of S = 32.065g/mol

Number of moles of O₂ = 0.157mole

Molar mass of O₂ = 31.9988g/mol

Unknown:

Maximum amount of SO₃

Solution

  We need to write the proper reaction equation.

           2S + 3O₂ → 2SO₃

We should bear in mind that the extent of this reaction relies on the reactant that is in short supply i.e limiting reagent. Here the limiting reagent is the Sulfur, S. The oxygen gas would be in excess since it is readily availbale.

So we simply compare the molar relationship between sulfur and product formed to solve the problem:

First, find the number of moles of Sulfur, S:

   Number of moles of S = \frac{mass }{molar mass}

   Number of moles of S =  \frac{17.9 }{32.065} = 0.558mole

Now to find the maximum amount of SO₃ formed, compare the moles of reactant to the product:

       2 mole of Sulfur produced 2 mole of SO₃

   Therefore; 0.558mole of sulfur will produce 0.558mole of SO₃

5 0
3 years ago
Molar mass is measured in units of
blsea [12.9K]
D. grams/ mole.
........
5 0
3 years ago
How many moles of water as a gas can be formed 2.45 L
Alex17521 [72]

Answer:

0.11mole

Explanation:

Let us assume that the condition is at standard temperature and pressure(STP);

 Given parameters:

        Volume of water  = 2.45L

   Unknown:

       Number of moles found in this volume of water  = ?

Solution;

 At STP;

                 Number of moles  = \frac{volume of gas}{22.4}

 Input the parameters and solve;

                  Number of moles of water  = \frac{2.45}{22.4}   = 0.11mole

The number of moles of water found is  0.11mole

4 0
3 years ago
What is the chemical symbol for fluorine?
NeX [460]

The chemical symbol is F

8 0
3 years ago
Read 2 more answers
I know that one of them is multiple choice but i’m not sure which one it is.
Evgen [1.6K]

Explanation:

1. neutrons

2. protons

3. protons and neutrons

4. neutrons

5. electrons

I'm not sure with 1 and 4, sorry :<

5 0
2 years ago
Other questions:
  • What is the mass of 3.75 moles of NaCl
    6·2 answers
  • .500 mol of br2 and .500 mol of cl2 are placed in a .500L flask and allowed to reach equilibrium. at equilibrium the flask was f
    12·2 answers
  • A large amount of dust and ash from a recent volcanic eruption settles in the region, which is most likely to survive, deer, fis
    10·1 answer
  • The reaction A2 + 2 B → 2 BA is thought to occur by the following mechanism:
    11·1 answer
  • Write the balanced equation for the reaction of aqueous Pb ( ClO 3 ) 2 with aqueous NaI . Include phases. chemical equation: Wha
    6·1 answer
  • Why does mecury hardly evaporate in room temperature
    13·1 answer
  • Among the groups of elements listed below, which have the same number of electrons in their outermost energy levels? C, K, Ca, R
    14·2 answers
  • If you start with 30.0 grams of sodium fluoride, how many grams of magnesium fluoride will be produced?
    15·1 answer
  • Which on the following is used to kill bugs on crops???????
    6·2 answers
  • What are the difficulties encountered in precipitation titration
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!