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Paladinen [302]
3 years ago
7

What are two things that could help u identify an unknown mineral

Chemistry
2 answers:
zheka24 [161]3 years ago
6 0
The shape and the color
Maurinko [17]3 years ago
5 0
The streak and the luster
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A chemical process that takes place in an organism and is essential to life is called?
Firdavs [7]

Answer:

Metabolism

Explanation:

The sum of the chemical reactions that take place within each cell of a living organism and that provide energy for vital processes and for synthesizing new organic material.

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Explain preparation of alkanes C--C from industrial source for industrial preparation of alkane​
Dmitrij [34]
Alkanes can be prepared from carboxylic acid via the removal of carbon dioxide. This process is known as decarboxylation. It produces alkane with a carbon atom lesser than that present in the carboxylic acid.
4 0
2 years ago
A gas of 190 mL at a pressure of 74 atm can be expected to change its pressure when its volume changes to 30.0 mL. Express its n
kozerog [31]

Answer : The new pressure of the gas will be, 468.66 atm

Explanation :

Boyle's Law : This law states that pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

P\propto \frac{1}{V}     (At constant temperature and number of moles)

or,

P_1V_1=P_2V_2

where,

P_1 = initial pressure of the gas = 74 atm

P_2 = final pressure of the gas = ?

V_1 = initial volume of the gas = 190 ml

V_2 = final volume of the gas = 30 ml

Now we put all the given values in the above formula, we get the final or new pressure of the gas.

74atm\times 190ml=P_2\times 30ml

P_2=468.66atm

Therefore, the new pressure of the gas will be, 468.66 atm

4 0
3 years ago
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3. What do we call atoms of the same elements with different mass numbers?
Talja [164]

Answer:

Isotopes

Explanation:

We call atoms of the same elements with different mass numbers isotopes.

7 0
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What is the chemica composition if the sun
nadezda [96]
The sun is mostly Hydrogen with some helium. It also has traces of other elements like various metals.
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3 years ago
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