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Nataly [62]
3 years ago
9

6) Define closed system

Chemistry
2 answers:
victus00 [196]3 years ago
4 0

Answer:

<em><u>A closed system is a physical system that does not allow transfer of matter in or out of the system, though, in different contexts, such as physics, chemistry or engineering, the transfer of energy is or is not allowed.</u></em>

<h2><em><u>hope</u></em><em><u> </u></em><em><u>it helps u</u></em><em><u> </u></em></h2>
polet [3.4K]3 years ago
3 0

Answer:

Explanation:

Closed system is a system that does not allow transfer of matter in or out of the system.

Hope this helps

plz mark as brainliest!!!!!

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(Chemistry question)
Anastaziya [24]
So to answer this we will use the next procedure:
<span>First balance the equation:
2 C6H5OH + 15 O2 --> 12 CO2 + 6 H2O
Phenol (C6H5OH) reacts with O2 in a 2:15 ratio.
This means:
moles phenol 2 / moles O2 = 2 / 15
moles phenol = (2/15)*0.200 = 0.0267
Molar mass of phenol is 94 g/mol
Mass of phenol would = 0.0267*94 = 2.5 g
</span>I hope this can help
6 0
3 years ago
The correct formula for aluminum phosphide
rewona [7]
<span>Aluminium phosphide.....</span>
8 0
4 years ago
Ca(s)+br2(l)⟶cabr2(s) express your answer as a chemical equation. identify all of the phases in your answer.
prohojiy [21]
The question requires to balance the equation.

The equation is already balanced, so the answer is:

<span>Ca(s)+Br2(l)⟶CaBr2(s)
</span><span>
</span><span>
</span><span>Explanation:
</span><span>
</span><span>
</span><span>1) The phases are identified with a letter to the right of the compound or element:
</span><span>
</span><span>
</span><span>So, for Ca, the phase is (s) which means solid.
</span><span>
</span><span>
</span><span>For Br₂ (l) the phase is (l) which means liquid.
</span><span>
</span><span>
</span><span>For CaBr₂(s) the phase is (s) which means solid.
</span><span>
</span><span>
</span><span>2) The core work of balancing is make the number of atoms of each element on the reactants equal to the same number of atoms on the products side.
</span><span>
</span><span>
</span><span>That is the law of conservation of mass applied to chemcial reactions.
</span><span>
</span><span>
</span><span>3) So, you have to add coefficientes on the right place to make the number of atoms on the left side equal to the number of the same kind of atom on the right side.
</span><span>
</span><span>
</span><span>In this table you can verify that the equation given is balanced:
</span><span>
</span><span>
</span><span>atom            left side             right side
</span><span>
</span><span>Ca                  1                           1
</span><span>
</span><span>Br                   2                           2
</span><span>
</span><span>So, you do not need to modify any coefficients.
</span>
3 0
3 years ago
What will be the effect on the concentration of NH3 if the pressure decrease
IgorLugansk [536]

Answer:

Concentration will decrease

Explanation:

5 0
3 years ago
Read 2 more answers
When ironing clothes, the primary method of heat transfer is
salantis [7]

A conduction cuz al, the materials are solid

7 0
3 years ago
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