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nata0808 [166]
3 years ago
7

Which of the following is NOT a chemical change?

Chemistry
1 answer:
nataly862011 [7]3 years ago
4 0

Answer:

Melting butter

Explanation:

You can reverse the change of butter back to its original state but you can never reverse the rest back to there original state

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A cell contains the same DNA as its parent cell. This is a result of which process? mitosis meiosis gamete formation fertilizati
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Answer:

Mitosis

Explanation:

A cell that contains the same DNA as its parent cell is a product of mitosis.

  • Mitosis is a cell division process that takes place in somatic cells.
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  • Mitosis ensures that the same DNA is found between the parent
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2 years ago
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Which boiling point is lower an why?
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Answer:4

Explanation:

If we carefully observe the electronegativity of the elements in question

P-2.19

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SiH4 is definitely more polar than CH4 hence greater dipole forces of a higher boiling point. NH3 is more polar than PH3 hence NH3 has greater dipole forces and a higher boiling point. Electronegative differences influences the polarity of a bond. The greater the electro negativity difference between bonding atoms, the greater the dipole forces and the greater the boiling point.

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3 years ago
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How many grams of chromium are in 2.0 x 1024 atoms
Vaselesa [24]

Answer: 173 g ( 0.17 kg in right accuracy)

Explanation: Amount in moles is n = N/Na =  2.0·10^24 / 6.022·10^23 (1/mol).

n = 3.32116 mol. M(Cr) = 52.00 g/mol and  mass m = nM = 172.7 g

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3 years ago
The percent abundance of each isotope tells you how many of each kind of isotope exist in every 100 particles. What does relativ
fiasKO [112]

Answer:

The answer is Relative plenitude alludes to the amount of a specific isotope is available in a given measure of test.  

Explanation:

The 'relative plenitude' of an isotope implies the level of that specific isotope that happens in nature. Most components are comprised of a blend of isotopes. The total of the rates of the particular isotopes must indicate 100%. The relative nuclear mass is the weighted normal of the isotopic masses. The percent plenitude of every sort of sweets reveals to you what number of every sort of Aufbau there are in each 100 CANDIES. Percent wealth is additionally relative plenitude. This is only a method for giving us a photo on which kind exists all the more every now and again.

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3 years ago
. Which information is NOT included in each square of the periodic table in your text? a. atomic number c. melting point b. chem
azamat
The correct answer is melting point
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3 years ago
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