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antiseptic1488 [7]
3 years ago
11

Is a mineral found on a gemology expedition likely to be a substance

Chemistry
1 answer:
Artyom0805 [142]3 years ago
3 0
A natural crystalline substance with different chemical and physical characteristics called gems and minerals can be found in expedition done by a gemologist. Gems and minerals are like an ordinary rock in their natural state but polished in order to have more value. They are often used as jewelry.  

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Which components of a galaxy exist in the space between the stars?
blsea [12.9K]

Answer:

(b) gas and dust

Explanation:

"The interstellar medium is the stuff between the stars. Made up mostly of hydrogen and helium gas – plus trace amounts of ices, silicate grains, and all the other elements – it contains all the material needed to make stars and planets. It is shaped by stellar winds, dying stars, galactic magnetic fields, and supernova explosions."

"The interstellar medium is filled primarily with hydrogen gas. A relatively significant amount of helium has also been detected, along with smaller percentages of such substances as calcium, sodium, water, ammonia, and formaldehyde . Sizable quantities of dust particles of uncertain composition are present as well."

5 0
2 years ago
Read 2 more answers
How many moles is 145 liters of hydrogen gas at STP?
jekas [21]

Answer:

6.44 moles

Explanation:

At STP, 1 mole = 22.4 L

145 L × (1 mole ÷22.4 L) = 6.44 moles

6 0
3 years ago
Plzz giving brainlist to first answer!Plss fill in the blanks!!ASAP.Modeling Our Solar System
Gwar [14]

Answer:

The planets follow these orbit  paths as they travel around the Sun. The Sun’s gravity  

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Modeling is a way to see ideas or have a  particular idea or

concept.

 Models do have some lines .

 Often a model is made with certain things.

 A model of the solar system may contain all of the planets and the Sun, but it may not include the planets’

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hope this helps

3 0
3 years ago
Yasmin's teacher tells her that the solubility of salt is 360 g/L at room temperature (25 °C). How can Yasmin make an unsaturate
Bezzdna [24]

Answer:

By adding less amount or quantity of the salt (solute), than the medium (solvent) can dissolve at a particular temperature that is to make an unsaturated solution at room temperature, Yasmin should add less than 360 g of salt to one liter of the solvent

Explanation:

An unsaturated solution is one that consists of less than the maximum mass or quantity of the solute that it is capable of dissolving.

6 0
3 years ago
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Aleksandr-060686 [28]
Potassium ,sodium, and magnesium
7 0
3 years ago
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