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
JulijaS [17]
2 years ago
5

How many electrons are in the n = 2 shell of a magnesium atom?

Chemistry
1 answer:
Montano1993 [528]2 years ago
8 0

Answer:

eight

Explanation:

That means there are 12 electrons in a magnesium atom

hope this helps

You might be interested in
A diploid somatic ("body") cell has 2n = 20 chromosomes. At the end of mitosis, each daughter cell would have ______ chromosomes
kozerog [31]

Answer:

At the end of mitosis, 2n = 20

At the end of meiosis I, n = 10

At the end of meiosis II, n = 10

Explanation:

Mitosis is a type of cell division in which daughter cell produced are genetically identical to their mother cell. So, no. of chromosome does not change after mitosis.

So, at the end of mitosis, each daughter cell would have <u>20</u> chromosome.

Meiosis is a type of cell division in which mother cell produces two haploid cells ones with a single set of chromosomes.

Meiosis is a two step cell division, Meiosis I and Meiosis II.

In meiosis I, homologous pair separates, so no. of chromosomes becomes half.

In meiosis II, sister chromatids separates. So, the number of chromosomes remains same (i.e. Have same no. of chromosome as present in cell produced after meiosis I).

So, at the end of mitosis, each daughter cell would have <u>20</u> chromosome.

At the end of meiosis I, each daughter cell would have n = 10 chromosomes. At the end of meiosis II, each daughter cell would have n = 10 chromosomes.

7 0
3 years ago
How much does the mass of 12.65-g sample of copper(II) nitrate hexahydrate decrease when heated?
garik1379 [7]
There is 103 percent of water in hydrate
4 0
2 years ago
For motion maps that illustrate accelerated motion what does a new level indicate
zhenek [66]
Oh that’s crazy I need help
3 0
3 years ago
Calculate the amount of heat needed to boil of benzene (), beginning from a temperature of . Be sure your answer has a unit symb
Pavlova-9 [17]

Answer:

Check explanation

Explanation:

From the question, the parameters given are 64.7g of benzene,C6H6; a starting temperature of 41.9°C and bringing it to 33.2°C.

Molar mass of benzene,C6H6= 78.11236 g/mol.

Things to know: heat capacity of benzene, C6H6= 1.63 J/g.K, the heat of fusion = 9.87 kj/mol.

STEP ONE(1): ENERGY USED IN MELTING BENZENE SOLID.

Using the formula below;

Energy used in melting the solid(in JOULES) = (mass of benzene/molar mass of benzene) × heat of Fusion.

=(64.7 g of C6H6/ 78.11236(g per mol) of C6H6) × 9.87 kJ per mol.

= 8.175 J.

= 0.008175 kJ.

STEP TWO (2): ENERGY OF HEATING THE LIQUID.

It can be calculated from the formula below;

Energy= heat capacity (J/g.K) × mass of benzene× (∆T).

= 1.63 J/g.K × 64.7 × (41.9-33.2).

= 917.5J.

= 0.9175 kJ.

Energy required to boil benzene= Energy required to melt the bezene + energy required for boiling.

= 0.008175+ 0.9175.

= 0.93kJ

Approximately, 1 kJ

8 0
3 years ago
Which factor of production would water be considered?
mamaluj [8]

Explanation:

land.

I think it is the answer

6 0
3 years ago
Read 2 more answers
Other questions:
  • Sirius, the brightest star, is 8.8 light-years from Earth. That means
    10·1 answer
  • If a car passes a pedestrian, a change in pitch is __________.
    15·2 answers
  • Element (20X) in the periodic table exist in:
    5·1 answer
  • How much is 35° C in F?
    5·1 answer
  • How should the table be changed to correctly distinguish between mechanical and electromagnetic waves?
    9·2 answers
  • You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration
    9·1 answer
  • Atom A and Atom B have the same number of protons and neutrons, but they do not have the same number of electrons. ASAP
    6·1 answer
  • Please help! I don’t think my answer is right!
    13·2 answers
  • A. Use the words below to complete the sentences.
    15·2 answers
  • Describe how elements of different electronegativities can share electrons unequally, leading to the formation of a polar covale
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!