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
Molodets [167]
3 years ago
9

Which element is the total number of valence electrons in an atom with a total of 13 protons

Chemistry
1 answer:
Musya8 [376]3 years ago
6 0

Answer:

This is Aluminium.

3 Valency electrons.

Explanation:

The atomic number is 13 and the electronic configuration is

1s22s22p63s23p1  . This is Aluminium.

It has 3 valency electrons.  (3s23p1).

You might be interested in
Identify and name the global<br> wind belts.<br> A<br> B<br> C<br> D<br> E<br> F<br> G
Finger [1]

Answer:

A. Polar Easterlies

B. Westerlies

C. Northeast Trades

D. Southeast Trades

E. Westerlies

F. Polar Easterlies

G. Hadley cell

Explanation:

I am pretty sure this is right. Hope that helps

8 0
3 years ago
Two descriptions for a sub-atomic particle are listed below:
Dmitrij [34]
Can not be D or B and A is not enough so C is right.
4 0
3 years ago
Read 2 more answers
Why is it necessary to find the percent yield of a reaction? A. to determine the efficiency of the reaction B. to determine the
ANTONII [103]

Answer:

A. to determine the efficiency of the reaction

Explanation:

  • Percentage is the ratio of the actual yield to theoretical yield as a percentage. It is calculated by dividing the actual yield by theoretical yield then multiplying by 100%.
  • Calculation of percentage yield is important as it helps in the determination of efficiency of a reaction. For example in most industries for the purpose of making the most product with the least waste.
  • Additionally, calculating the percentage yield helps in determining other products that may be formed during the reactions.
4 0
4 years ago
Please help me with this question it’s really confusing and I’ll give you extra credit :)) THANK YOU SMM
nignag [31]

Answer:

it wants you to conclude what you have learned by writing if you think there is a  link between the impact and the extinction of the dinosaurs by stateing any  similarities to the two events and provide evidence to surpport your claim  

Explanation:

6 0
2 years ago
What is chemistry and what types of questions do chemists try to answer
Reil [10]

Answer:

Chemistry is the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.

They answer questions like,  like "What makes up this material?," "How does this material change when heated or cooled,?" What happens when I mix this material with another material,?" and "What rules determine how materials change in different situations?" What makes up Chemical X?

6 0
3 years ago
Other questions:
  • Convert 0.0078 gallons to centiliters (1 gallons =3.785L)
    10·1 answer
  • Near the ceiling of a room air is warmer. The warm air rises because of
    15·2 answers
  • What is the limiting reactant for the following balanced equation when 9 moles of AlF3 are mixed with 12 miles of O2?
    5·1 answer
  • A gas is contained in a cylinder with a volume of 2.9 L at a temperature of 32.7oC and a pressure of 645.3 torr. The gas is then
    7·1 answer
  • When a solid undergoes _____ it takes up less space due to cooling
    8·2 answers
  • Which radio wave has a higher frequency and carries more energy?????
    6·1 answer
  • Which of the following is not an amphoteric substance?
    14·1 answer
  • Suppose you boil an egg. What kind of change is taking place?
    10·2 answers
  • Why is water sometimes called the ""universal solvent?"".
    7·1 answer
  • Determine the percentage composition of Ptl2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!