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
Katena32 [7]
3 years ago
12

what is the mass number of an ion with 109 electrons 159 neutrons and a +1 charge? Express your answer as an integer

Biology
1 answer:
Blizzard [7]3 years ago
6 0
Z=atomic number (number of protons)
The number of protons is similar to the number of electrons when the atom doesn´t have charge. 
In this case :
"+1 charge" means that this atom would must have 1 electron more to be neutral, therefore the number of electrons of this element would be 109+1=110.

A=Z+N
A=mass number
Z=110 u
N=159 u

A=110 u + 159 u=269 u

Answer: the mass number (A) would be 269 u
You might be interested in
Why might a phylogeny based only on molecular data show a different pattern of relationships than a phylogeny of the same taxa b
Kitty [74]

A phylogeny of the same taxa based only on morphological traits:

Some highly conserved genetic sequences can result in unrelated species appearing closely related in a molecular phylogeny, and not reflect the same pattern as the morphologic phylogeny.

Gene sequence changes may not result in morphological changes.

Gene sequences always provide more data than morphological traits.

Morphological analyses always provide more data because each morphological trait is the result of the expression of many genes.

The molecular data may be based on the analysis of introns, which aren't expressed and don't contribute to the evolutionary history of a group of taxa.

Why is molecular data more accurate?

Phylogenetic trees reconstructed from molecular sequences are often considered more reliable than those reconstructed from morphological characters, in part because convergent evolution, which confounds phylogenetic reconstruction, is believed to be rarer for molecular sequences than for morphologies

Learn more about molecular data :

brainly.com/question/16044878

#SPJ4

6 0
2 years ago
Where do you think all living things on Earth get their energy?
Andru [333]

the sun gives all living things there energy

5 0
3 years ago
How was earth able to maintain the moderate temperatures that were necessary to support life ?
Setler [38]
<h3>Answer: The oceans and atmosphere help earth have moderate temperatures!</h3>

7 0
3 years ago
Plants that are grown from undifferentiated cells of leaves, stems, or roots are produced by
svetoff [14.1K]
I think it’s B, but i could be wrong
6 0
3 years ago
Read 2 more answers
How could you find out whether an earthworm eats soil or not?
navik [9.2K]
It's biproducts or by cutting it open and find out.
4 0
3 years ago
Other questions:
  • What observation did Darwin make that suggested there had been geological changes in Earth's history?
    12·1 answer
  • How do organ systems work together to deliever nutrients from food throughout the body?​
    14·1 answer
  • Light pollution harms plants and animals because they confuse it with _____.
    6·2 answers
  • What are unicellular prokaryotes that live in dust?
    5·1 answer
  • Which of the following is not a function of astrocytes?guide the migration of young neurons, synapse formation, and helping to d
    13·1 answer
  • Why is it that the typical diploid chromosome number of many
    14·1 answer
  • compare the chemical equations for photosynthesis and cellular respiration explain how the two processes are interrelated
    7·1 answer
  • Which organelle would not be found in a prokaryotic cell? A) nucleus b)cell membrane c)Cytoplasm d)Genetic material​
    12·1 answer
  • Nine-banded armadillos give birth to four offspring at a time. An amazing fact about these offspring is that they are geneticall
    5·1 answer
  • Selma is creating a visual representation of the sun and its components for her science fair.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!