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kotykmax [81]
4 years ago
8

WILL GIVE BRAINLYIST HELPPPPP PLEASE Which is the second stage of mitosis?

Chemistry
2 answers:
stich3 [128]4 years ago
8 0
Metaphase is the answer
____ [38]4 years ago
3 0

Answer: Metaphase

Explanation:

Metaphase is SECOND stage of mitosis, that follows prophase and comes before anaphase, during which condensed chromosomes become aligned before being separated.

During Metaphase, the chromosomes become visible due to the condensation, and the success of this stage determines whether anaphase will occur.

Therefore, metaphase is the second stage of mitosis.

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It took 55 days for a radioactivity of 1.75 x 1012 Bq to remain 0.135 Ci. What is the half-life of this radioactivity?
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From the calculations, the half life of the material is 6.5 days.

<h3>What is radioactivity?</h3>

The term radioactivity has to do with the spontaneous disintegration of a specie.

Uisng the formula;

N=Noe^-kt

N= amount at time t = 0.135 Ci or 4.995 ×10^9 Bq

No = amount initially present =  1.75 x 10^12 Bq

k = rate constant = ?

t = time taken = 55 days

Hence;

4.995 ×10^9  = 1.75 x 10^12e^-55k

4.995 ×10^9/1.75 x 10^12 = e^-55k

2.85 * 10^-3 = e^-55k

ln2.85 * 10^-3 = -55k

k = ln2.85 * 10^-3/-55

k = 0.1066 day-1

Half life = 0.693/ 0.1066 day-1

= 6.5 days

Learn more about radioactivity:brainly.com/question/1770619

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2 years ago
the mass number of a chromium Atom is 52 and it has 24 protons. How many neutrons does this atom have?
omeli [17]

Chromium has a total of 28 neutrons. This is found because we subtract the number of protons (the atomic number) from the mass number. 52 minus 24 gives us 28. It also has 24 electrons.

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More energy is required to raise its temperature. Therefore, temperature does not stay the same when heat energy increases.

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I'M GIVING BRAINIEST AND I'LL RATE YOU THAANKS!!!!
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0.5 mole of a SO2 contains 3.01 into 10 ^23 molecules of So2.

Explanation:

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