2 years ago

What is the reaction that joins thousands of small, identical molecules to form one very long molecule?

Chemistry

1 answer:

34kurt2 years ago

8 0

This is known as polymerisation

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A student mixes some water at room temperature with a white powder also at room temperature. The white powder disappears into th

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Chemical change, because the white powder heated the water and caused a thermal reaction, and possibly gas was produced due to bubbles.

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2 years ago

What type of matter is salt water?

algol13

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3 years ago

How to solve x² in differential

g100num [7]

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Explanation:

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2 years ago

What masses of kbr and water are needed to produce 300. g of a solution that is 3.00 % by mass?

attashe74 [19]

In a solution of KBr and water; KBr is the solute and water is the solvent;
Therefore; to achieve 3% by mass; it means we are going to have 3% of the mass being the solute and the other 97 % being the solvent.
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2 years ago

A gas system contains 2.00 moles of O2 and CO2 gas, has an initial temperature of 25.0 oC and is under 1.00 atm of pressure. If

Ainat [17]

Answer:

$V_2=52.2L$

Explanation:

Hello there!

In this case, by bearing to to mind the given conditions, it is firstly possible to determine the initial volume of the closed system via the ideal gas equation:

$PV=nRT\\\\V=\frac{2.00mol*0.08206\frac{atm*L}{mol*K}*298.15K}{1.00 atm} \\\\V=48.9L$

Which is V1 in the Charles' law:

$\frac{T_2}{V_2} =\frac{T_1}{V_1}$

And of course, T1 is 298.15 (25+273.15). Therefore, by solving for V2 as the final volume, we obtain:

$V_2=\frac{V_1T_2}{T_1}\\\\V_2=\frac{48.9L*(45+273.15)K}{(25+273.15)K} \\\\V_2=52.2L$

Best regards!

8 0

3 years ago