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Tom [10]
3 years ago
8

What are the different characteristics that can be used to identify an unknown mineral

Chemistry
2 answers:
olya-2409 [2.1K]3 years ago
7 0

Hardness. The ability to resist being scratched—or hardness—is one of the most useful properties for identifying minerals. ...

Luster. Luster is how a mineral reflects light. ...

Color. One of the most obvious properties of a mineral is color. ...

Streak. ...

Specific Gravity.

brilliants [131]3 years ago
4 0
These are just a couple ways to identify unknown minerals,touch taste smell 

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Identify and describe the different forms of precipitation shown in the images.
zloy xaker [14]

Answer:

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Explanation:

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Will the water level of the sea increase when there is global warming
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If 190dm of hydrogen gas collected at 20°c and 760mmHg .Calculate it's volume at stp (standard pressure=760mmHg
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Answer:

177.1 L

Explanation:

The excersise can be solved, by the Ideal Gases Law.

P . V = n . R . T

In first step we need to determine the moles of gas:

We convert T° from, C° to K → 20°C + 273 = 293K

We convert P from mmHg to atm → 760 mmHg = 1atm

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We replace: 190 L . 1 atm = n . 0.082 . 293K

(190L.atm) / 0.082 . 293K = 7.91 moles.

We replace equation at STP conditions (1 atm and 273K)

V = (n . R .T) / P

V = (7.91 mol . 0.082 . 273K) / 1atm = 177.1 L

We can also make a rule of three:

At STP conditions 1 mol of gas occupies 22.4L

Then, 7.91 moles will be contained at (7.91 . 22.4) /1 = 177.1L

3 0
3 years ago
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Hello!
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