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
Musya8 [376]
3 years ago
14

An atom has the following electron configuration . 1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 4s^ 2 How many valence electrons does this atom

have ?
2
3
5
11
Chemistry
1 answer:
stepan [7]3 years ago
5 0
It’s 2 because it’s the number of row it is in; the element is calcium in row 2
You might be interested in
Hydrogen gas can be produced by reacting aluminum with sulfuric acid. How many moles of sulfuric acid are needed to completely r
Illusion [34]

Answer:

22.5

Explanation:

all you have to do is take the number of moles of al and multiply them by sulfuric acids mole ratio as given in the equation (3), then divide by aluminums mole ratio number (2). then you will have moles of sulfuric acid.

*note: this only works if you are going moles to moles, if you are converting to anything else, this will NOT work*

if you have any questions leave them in the comments and i will try to answer them, if this helped, pls give a brainly

7 0
3 years ago
Decomposition NH3 =
Kruka [31]

Answer:

h2*

Explanation:

7 0
3 years ago
Read 2 more answers
Is the answer less dense?
xxMikexx [17]
I believe it is less dense.. that is why ice floats on water
5 0
4 years ago
a flack that weighs 345.8g is filled with 225 ml of carbon terachloride the weight of the flack and carbon terachloride is found
Jlenok [28]

The density of the carbon tetrachloride is 1.59 g/mL.

Mass of CCl₄ = 703.55 g – 345.8 g = 357.75 g

Density = mass/volume = 357.75 g/225 mL = 1.59 g/mL

7 0
3 years ago
1. La densidad de CCl4 (tetracloruro de carbono) es 1,58. g/mL.
Andre45 [30]

Answer:

La respuesta es

<h2>158 g</h2>

Explanation:

La masa de una sustancia cuando se le da la densidad y el volumen se puede encontrar usando la fórmula

<h3>masa = Densidad × volumen</h3>

De la pregunta

volumen = 100 mL

densidad = 1.58 g/mL

La masa de sustancia es

masa = 100 × 1.58

Tenemos la respuesta final como

<h3>158 g</h3>

Espero que esto te ayude

6 0
4 years ago
Other questions:
  • Which group is in the leftmost column on the periodic table?
    10·1 answer
  • The air leaves the balloon in one direction; the car moves in the opposite direction. This balloon car illustrates for action, t
    7·2 answers
  • Which of the following is a physical change?
    14·2 answers
  • Which diagram shows a pattern similar to the emission spectrum of hydrogen?
    9·1 answer
  • What are two examples of high friction?
    5·2 answers
  • Which of the following best describes biogeochemical cycles? A. They cycle elements through the biotic and abiotic components of
    8·1 answer
  • Which organelle helps to break down substances?
    12·1 answer
  • 20. Show a correct numerical setup for calculating the molarity of the KOH * (aq) solution. Then state the calculated value of t
    12·1 answer
  • How do you convert <br> 95gFe= molFe
    7·1 answer
  • Nepheline a nonpartisan that survives at room temperature can be used to protect wool clothing from being eaten by moths.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!