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2 years ago

What are the stages of the life cycle of the sun

2 answers:

5 0

The Sun is currently a main sequence star and will remain so for another 4-5 billion years. It will then expand and cool to become a red giant, after which it will shrink and heat up again to become a white dwarf. The white dwarf star will run out of nuclear fuel and slowly cool down over many billions of years.

sladkih [1.3K]2 years ago

4 0

Main sequence star - red giant - white dwarf

In Order

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Radiation can cause long-term problems once it enters the environment.

tatuchka [14]

Yes it can cause plants and animals to become un eatable leaving us hungry and the air toxicated

7 0

2 years ago

Defination of dative covalent bond

mixer [17]

<h2>♨ANSWER♥</h2>

In coordination chemistry,

A coordinate covalent bond also known as a dative bond, dipolar bond, or coordinate bond is a kind of two-center, two-electron covalent bond in which the two electrons derive from the same atom. The bonding of metal ions to ligands involves this kind of interaction.

☆...hope this helps...☆

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5 0

1 year ago

Read 2 more answers

Use the drop-down menus to select the correct name for each of the organic compounds.

Molodets [167]

Answer:

Here's what I get

Explanation:

CH₃CH₂CH₂CH₂CH₂CH₃ — hexane

CH₂=CHCH₂CH₂CH₂CH₃ — hex-1-ene is the preferred IUPAC name (PIN). 1-Hexene is accepted

CH₃C≡CCH₃ — but-2-yne (PIN); 2-butyne is accepted

CH₃CH(CH₃)CH₂CH₂CH₃ — 2-methylpentane

CH₃CH₂CHCICH₂CH₃ — 3-chloropentane

5 0

3 years ago

Read 2 more answers

Suppose that a certain atom possesses only four distinct energy levels. Assuming that all transitions between levels are possibl

olya-2409 [2.1K]

Answer:

Following are the response to the given question:

Explanation:

The number of shells

n = 4

Calculating the spectral line:

$= \frac{n(n-1)}{2}\\\\ = \frac{4(4-1)}{2} \\\\= \frac{4\times 3}{2}\\\\ = \frac{12}{2}\\\\ = 6$

4 0

2 years ago

How much heat does it take to melt 2.5 kg of lead when it is at its melting point (m.p. = 327.5°C; Hf = 2.04 × 104 J/kg)?

irinina [24]

1. the amount of heat that it would take would be :
5.1 x 10^4 J

2. I think the substance would be : Iron

3. the amount of heat required would be :
1.13 x 10^4 kJ

Hope this helps

6 0

2 years ago

Read 2 more answers