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
astra-53 [7]
3 years ago
11

Why is it important to know the number of valence electrons in an atom?

Chemistry
1 answer:
Nostrana [21]3 years ago
5 0

Answer:

Valence electrons are the electrons in the outermost energy level of an atom — in the energy level that is farthest away from the nucleus. Being able to determine the number of valence electrons in a particular atom gives you a big clue as to how that atom will react.

Explanation:

You might be interested in
PLEASE HELP. !!
scoray [572]

Answer:

Potential energy = 441 N

Explanation:

Given:

Mass M = 15 kg

Height = 3 m

Find:

Potential energy

Computation:

Potential energy = mgh

Potential energy = (15)(9.8)(3)

Potential energy = 441 N

8 0
3 years ago
4.65 L of nitrogen at standard pressure is compressed into a 0.480 L container. What is the new pressure in kPa?
Semenov [28]
Assuming that nitrogen gas is ideal, we can use the equation PV = nRT to relate first conditions to the second condition. At constant temperature, pressure and volume are indirectly related as follows:

P = k / V

k is equal nRT

P1V1 = P2V2
P2 = 101.325 ( 4.65 ) / .480 = 981.586 kPa
6 0
3 years ago
How manymoles of each ion are present in 175 mL of 0.147 M Fe2(SO4)3?
lilavasa [31]

Answer: 0.0257 moles of Fe^{3+}  and 0.0257 moles of SO_4^{2-}

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{moles}{\text {Volume in L}}

moles of  Fe_2(SO_4)_3=Molarity\times {\text {Volume in L}}=0.147\times 0.175L=0.0257moles

The balanced reaction for dissociation will be:

Fe_2(SO_4)_3\rightarrow Fe^{3+}+SO_4^{2-}

According to stoichiometry:  

1 mole of Fe_2(SO_4)_3 gives 1 mole of Fe^{3+}  and 1 mole of SO_4^{2-}

Thus there will be 0.0257 moles of Fe^{3+}  and 0.0257 moles of SO_4^{2-}

8 0
3 years ago
Which of the following lists elements from lowest to highest atomic number
vitfil [10]
Lowest is Hydrogen highest is <span>Beryllium
-HOPE THIS HELPED </span>
8 0
3 years ago
How many protons are in Calcium - 41?
EastWind [94]

Answer:

the correct answer to your question is 20

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement is true about writing chemical formulas of covalent compounds?
    6·2 answers
  • What is one way to test whether an unknown solution is acidic or basic?
    9·1 answer
  • Write a chemical equation that describes the dissolving of solid magnesium nitrate, Mg(NO3)2, in water.
    11·2 answers
  • ASAP MULTIPLE CHOICE
    7·1 answer
  • What is characteristic of a mineral? A.It must be amorphous and have un indefinite chemical composition. B.Its must be amorphous
    15·1 answer
  • How many atoms are in 1 mole of gold
    12·1 answer
  • Choose the aqueous solution that has the highest boiling point. These are all solutions of nonvolatile solutes and you should as
    8·1 answer
  • What determines the strength of a dipole dipole force?
    8·1 answer
  • Perform an on-line search to find real-world uses for the titration process. State what you find below.
    12·1 answer
  • Match the wave with its definition. (Lesson 4.03-4.03)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!