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masha68 [24]
3 years ago
8

Which feature is used to classify galaxies? age color shape size

Chemistry
1 answer:
kondor19780726 [428]3 years ago
8 0

Answer:

C. Shape

Explanation:

Did the quiz! & galaxies are classified by shapes called "elliptical, spirial, &  irregular"

Good luck :)

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The freezing point of a substance is -20°C. Its boiling point is 120°C.
Tasya [4]

Answer:

a. liquid

b. solid

c. gas, (should be at it's boiling point)

Explanation: If the normal melting point of a substance is below room temperature, the substance is a liquid at room temperature. Benzene melts at 6°C and boils at 80°C; it is a liquid at room temperature. If both the normal melting point and the normal boiling point are above room temperature, the substance is a solid.

if you need an explanation to each lmk

8 0
3 years ago
Hellllppppp<br> lons Worksheet
Iteru [2.4K]

The metals will lose electrons while the non metals will gain electrons in order to attain octet structure.

An ion can be cation (positively charged) or anion (negatively charged).

Cations attain octet structure (8) by losing electron(s) while anions become stable or attains octet structure (8) by gaining electron(s).

The remaining elements are completed as follows to attain octet structure;

<u>Element</u>--<u>valence electron</u>--<u>electrons to gain</u>--<u>electrons to lose</u>--<u>ion formed</u>

O ------------ 6 ----------------------  2 ------------------------  none -------------- O^{2-}

Ca --------   2 ----------------------- none ---------------------- 2 ------------------ Ca^{2+}

Br ----------- 7 ---------------------     1 ------------------------ none --------------- Br^{-}

S ------------ 6 -----------------------  2 ------------------------ none --------------- S^{2-}

Cl ------------ 7 -----------------------  1 ------------------------ none ----------------Cl^{-}

K -------------- 1 ----------------------- none ----------------------- 1 ------------------ K^{+}

Mg ------------ 2 ---------------------- none ---------------------- 2 ---------------- Mg^{2+}

Be ------------- 2 ---------------------- none ---------------------- 2 ---------------- Be^{2+}

Learn more here: brainly.com/question/21089350

8 0
2 years ago
Why might it be unwise to drink water straight from a pond
arsen [322]

Answer:

it is because of the bacteria and different things that go into waters such as ponds, rivers, lakes, seas, oceans, streams, and other body of waters and I should also add the chemicals that go into them as well

Explanation:

5 0
2 years ago
Una síntesis industrial del acetileno, gas extensamente utilizado para la fabricación de numerosas drogas, colorantes y plástico
astraxan [27]

Answer:

foot dab lit foot you a foot

3 0
2 years ago
How do volcanoes change the Earth's surface?
adelina 88 [10]
When a volcano erupts magma comes from the top when the magma cools down it hardens and leaves a hard surface
6 0
3 years ago
Read 2 more answers
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