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bekas [8.4K]
3 years ago
13

Destiny was looking at different stars in the night sky with her telescope and noticed that

Chemistry
1 answer:
jenyasd209 [6]3 years ago
7 0

Answer:

The red stars are stars that were here for a while and the blue ones are just starting out or is made up of a few different gases.

Explanation:

You might be interested in
Chemical and physical properties of calcite​
Semenov [28]

Answer:

Chemical Classification Carbonate

Explanation:

7 0
4 years ago
An igneous rock that _____ is made of really small mineral crystals. A. cools rapidly B. crystallizes slowly C. undergoes extrem
Elina [12.6K]

Answer: An igneous rock that cools rapidly is made of really small mineral crystals.

Explanation:

The layers inside the earth are hot enough to melt a rock. The liquid or molten rock is known as magma.

When a molten rock cools and solidifies, it results in the formation of an igneous rock.

The slow cooling of magma will result in the formation of an igneous rock with large crystals. Whereas, rapid cooling of lava will result in the formation of an igneous rock with small crystals.

Thus, it can be concluded that an igneous rock that cools rapidly is made of really small mineral crystals.


6 0
4 years ago
How to tell the difference between polar and nonpolar covalent bonds?
NemiM [27]
You need to look at the electronegativity and decide wheter the difference of both of the numbers are significant enough to form a polar bond
3 0
3 years ago
If you have 10,000 grams of a substance that decays with a half-life of 14 days, then how much will you have after 56 days?
Crank

Answer: 625 grams

Explanation:

14 goes into 56, 4 times.

10,000÷2=5,000 - first half life

5,000÷2=2,500 - second half life

2,500÷2=1,250 - 3rd half life

1,250÷2= 625 - 4th half life

Note: don't type "grams" after 625, just type "625".

5 0
2 years ago
Which is the electron configuration for bromine? 1s22s22p63s23p64s23d104p5 1s22s22p63s23p64s23d104p6 1s22s22p63s23p44s23d104p5 1
Svetach [21]

Answer : The correct option is, 1s^22s^22p^63s^23p^64s^23d^{10}4p^5

Explanation :

The given element bromine belongs to the group 17 and period 4. The symbol of bromine is, Br.

The atomic number of bromine = 35

The total number of electrons present in bromine element = 35

Electronic configuration : It is defined as the arrangement of electrons around the nucleus of an atom.

Hence, the correct electronic configuration of bromine is,

1s^22s^22p^63s^23p^64s^23d^{10}4p^5

8 0
3 years ago
Read 2 more answers
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