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
Svetlanka [38]
3 years ago
13

What is the mass of an element with 15 protons, 13 electrons, and 11 neutrons?

Biology
1 answer:
RSB [31]3 years ago
8 0

Answer:

B. 26amu

Explanation:

The nucleus of an atom in an element contains protons, electrons and neutrons. The proton number equals the electron number in a neutral atom. The proton number is also called the atomic number, denoted by Z.

The mass number also called Atomic mass unit (amu) in this case, of an element is the sum of the proton number and the neutron number in the atom of that element. The mass number is denoted by A.

Hence, A = Z + N

Where A = Mass number

Z = Proton (atomic number)

N = Neutron number

In this question, N is 11 while Z is 15

Hence, the mass number of the element in the question, in AMU, is 15 + 11 = 26amu.

You might be interested in
Is the Great Green Wall an example of Secondary Succession?
shusha [124]

Answer:

The Great Green Wall is taking root in Africa's Sahel region, at the southern edge of the Sahara desert. The Great Green Wall is a symbol of hope in the face of one of the biggest challenges of our time - desertification. This game changing African-led initiative aims to restore Africa's degraded landscapes and transform millions of lives in one of the world's poorest regions, the Sahel.

Primary succession occurs on land where no previous growth has taken place and there is no substrate/soil. Secondary succession occurs on land where there has been previous growth, the soil and seed bank makes up the substrate.

Explanation:

I majored in Biology

7 0
3 years ago
In one paragraph, please justify the following argument: “Without the sun, I would be unable to move.” Discuss the processes of
steposvetlana [31]

The sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc. photosyntesis is the process of making food which needs sun,water,nutrients etc.

8 0
3 years ago
Read 2 more answers
explain how nitrogen atoms are transferred from dead mustard plants materisl into new marigold seedlings
liberstina [14]
Dead mustard plants disintegrate into the soil And the worms in the soil see it and are like woah man let’s fricking rave! So these worms rave until the riff of dawn and the air gets so dense it just turns into nitrogen. The rave vibes were so lit that the nitrogen had this gold ora to it. The worms gathered it all and in a way, molded it into a seedling. They were like “ we gonna name it marigold cuz we had a pretty merry good time”. So yea science is wild isn’t it?
5 0
3 years ago
Corbin recently found out that he has cancer, and he now strictly follows a treatment, diet, and exercise program that the docto
Firlakuza [10]

Answer:

Corbin recently found out that he has cancer, and he now strictly follows a treatment, diet, and exercise program that the doctor thinks will be helpful in keeping the cancer from spreading. These behaviors best illustrate <u>problem-focused</u> coping.

Explanation:

Problem-focused coping seeks to tackle the stressor head-on allowing the individual greater perceived control over their problem resulting in :

  • Managing and changing the stressor
  • Use if problem seems alterable
  • Confrontice coping
  • Planful problem solving

As Cobbin is strictly following treatment, diet and exercise programs that the doctor thinks will be helpful in keeping the cancer from spreading, Cobbin is showing <u>problem-focused coping.</u>

6 0
3 years ago
In photosynthesis, what substances come in from the outside, what substances are produced
VARVARA [1.3K]
Carbo dioxide, water and sun's energy comes fron the outside.... energy and Oxygen molecule are produced
7 0
3 years ago
Read 2 more answers
Other questions:
  • The _____ _______, which is in the units mg/100 mL plasma, is the maximum concentration of a substrate that the kidneys can reab
    9·1 answer
  • AIDS :
    15·1 answer
  • Which statement correctly describes genetic diseases or disorders? If one inherits a gene for a specific disease, and the gene i
    9·2 answers
  • A plant scientist was hired by a greenhouse operator to devise a way to force iris plants to bloom in the short days of winter.
    13·1 answer
  • Genetic drift happens in a population
    7·1 answer
  • What is the main function of the ocular lens in a compound microscope
    9·1 answer
  • .
    6·1 answer
  • Which joint allows a side-to-side movement called lateral excursion?
    8·1 answer
  • Determine the correct energy transformations during the generation of electricity from fossil fuels.
    10·1 answer
  • In which phase of mitosis do the chromosomes wind up and become shorter and thicker? I think its prophase??
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!