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DiKsa [7]
3 years ago
13

HELP MEE please with this question this question is 100pts and i will give branliest i only have 5 min left guys thanx:) Which s

tatements describe events that occur during interphase? Check all that apply.
A cell grows to its full size.
The cytoplasm of the cell divides.
The nucleus divides into two identical nuclei.
Two identical cells are formed.
The cell copies its DNA.
Chemistry
1 answer:
LenaWriter [7]3 years ago
8 0

Answer:

The cell grows into its full size

The cell copies it’s dna

Explanation:

hope this helps pls mark brainliest

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What goes in the blank?
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Protons goes in the blank. the word can be used for both.
5 0
3 years ago
How many moles of solute are contained in a 250.0-milliliter solution that has a concentration of 0.85 M?
adoni [48]

Answer : The correct option is, 0.21 moles

Solution : Given,

Molarity of the solution = 0.85 M = 0.85 mole/L

Volume of solution = 250 ml = 0.25 L     (1L=1000ml)

Molarity : It is defined as the number of moles of solute present in one liter of the solution.

Formula used :

Molarity=\frac{\text{moles of solute}}{\text{Volume of solution in liters}}

Now put all the given values in this formula, we get the moles of solute of the solution.

0.85mole/L=\frac{\text{moles of solute}}{0.25L}

\text{moles of solute}=0.2125=0.21moles

Therefore, the moles of solute is, 0.21 moles

7 0
3 years ago
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2.40 kJ of heat is added to a slug of platinum and a separate 2.40 kJ of heat is added to a slug of zinc. The heat capacity of t
leonid [27]

Final temperature of platinum :-   36.5°C

Final temperature of Zinc :-  29.17°C


3 0
3 years ago
Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is radioactive, with a half-life of 28
Firlakuza [10]

Answer:

67.6 years is the time the isotope take to decay from 0.900g to 0.170g

Explanation:

The radioactive decay follows first order law:

Ln [A] = -kt + ln[A]₀

<em>Where [A] is concentration after time t,</em>

<em>k is decay constant:</em>

<em>k = ln 2 / t(1/2)</em>

<em>k = ln2 / 28.1 years</em>

<em>k = 0.02467 years⁻¹</em>

<em>[A]₀ = Initial concentration.</em>

<em />

We can replace concentration and use the mass of the isotope:

Ln [A] = -kt + ln[A]₀

Ln [0.170g] = -0.02467 years⁻¹t + ln[0.900g]

-1.667 = -0.02467 years⁻¹t

t =

<h3>67.6 years is the time the isotope take to decay from 0.900g to 0.170g</h3>
5 0
3 years ago
An ionic bond occurs between what particles?
DerKrebs [107]

Answer:

A positive and a negative ion.

Explanation:

5 0
4 years ago
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