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Tems11 [23]
3 years ago
9

How can you test a mineral for hardness? I NEED~ THIS NOW PLEASE

Chemistry
1 answer:
creativ13 [48]3 years ago
8 0
Courtney’s in minerals can vary due to impurities but is usually diagnostic we determine the relative hardness of minerals using a scale diversity bye mineralogists Freidrich Mohs The scale assigned hardness Tuten common index minerals and is based up on the ability of one mineral to scratch another
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What elements make up proteins?
crimeas [40]
Proteins are organic molecules composed of Carbon, Hydrogen, Oxygen and Nitrogen.
4 0
4 years ago
Read 2 more answers
The student repeated the experiment using a higher concentration of acid. The same volume of acid and the same mass of magnesium
Elena L [17]

Answer:

53 cm³

Explanation:

When the student used dilute sulfuric acid, the reaction was complete after 60 s, because no more hydrogen was formed in the next 10 s.

The reaction would go faster if the student used a more concentrated acid, but 53 cm³ of hydrogen is the most that would form.

5 0
3 years ago
Làm thế nào để tắt mỗi chất ra khỏi hỗn hợp gồm bột nhôm bột sắt và bột gỗ?
guajiro [1.7K]

Answer:

Dùng nam chân hút đc bột sắt ra khỏi hỗn hợp

Bột gỗ và bột nhôm thì bột gỗ tan trong nước còn bột nhôm thì không

Explanation:

  • Nice !
7 0
3 years ago
According to Le Châtelier's principle, an increase in temperature will shift the equilibrium position toward the products in an
Sav [38]

The statement "According to Le Châtelier's principle, an increase in temperature will shift the equilibrium position toward the products in an endothermic reaction" is definitely true.

<h3>What is Le Châtelier's principle?</h3>

Le Châtelier's principle may be defined as transformations in the temperature, pressure, volume, or concentration of a system that will lead to observable and conflicting changes in the strategy in order to accomplish a refreshed equilibrium state.

According to Le Châtelier's principle, an increase in temperature generates the equilibrium to move in the direction of the product of the endothermic reaction, and the decrease in the temperature rationales the equilibrium to move in the direction of the product of the exothermic reaction.

Therefore, it is well described above.

To learn more about Le Châtelier's principle, refer to the link:

brainly.com/question/2943338

#SPJ1

7 0
2 years ago
the density of ethanol is 0.789g/ml at 20°c. find the mass of a sample of ethanol that has a volume of 150.0 ml at this temperat
dlinn [17]
Density=mass/volume

O.789 g/ml=m/150ml
M=0.789*150=118.35 g
7 0
3 years ago
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