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tamaranim1 [39]
3 years ago
15

Help please! Given that the enthalpy of reaction for a system at 298 K is –292 kJ/mol and the entropy for that system is 224 J/m

ol*K, what's the free energy for the system?
a) -87,793 kJ
b) -225 kJ
c) -66,751 kJ
d) 358 kJ
Chemistry
1 answer:
riadik2000 [5.3K]3 years ago
3 0

Answer:

<h3><em><u>C</u></em><em><u>.</u></em><em><u> </u></em><em><u> </u></em><em><u>-</u></em><em><u>6</u></em><em><u>6</u></em><em><u>,</u></em><em><u> </u></em><em><u>7</u></em><em><u>5</u></em><em><u>1</u></em><em><u> </u></em><em><u>kj</u></em></h3>

Explanation:

hope it helps

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tatyana61 [14]

In the given question according to the information the process of polymerization is an addition polymerization.

<h3>What is polymerization?</h3>

Polymerization is a process in which addition of many small molecules takes place for the formation of a large three dimensional substance known as polymer.

In the polymerization of polyethene the small repeating molecule is ethene and in this process product formed due to the addition process to the double bond of the ethene.

  • In condensation polymerisation removal of water molecule or any other molecule takes place.
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Hence given process is an addition polymerisation.

To know more about polymerisation, visit the below link:

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aliya0001 [1]
Cells are too small to see with the naked eye. 

It's pretty straight forward, use the cross-out method. 

1) Microscopes MAGNIFY images, they don't color the cells. In fact, scientists have to use these chemicals to "stain" or color the cells to see them more easily through microscopes. 

2) If the lenses of a microscope reduced the image of an organism to the size of a cell, you'd be seeing a very tiny human through your microscope, instead of actual cells. 

3) Microscopes don't "trap" anything. In fact, scientists use plates or slides under microscopes to contain what they're studying. 

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Answer:

Density = 8.92 \ g/mL

Explanation:

The equation for density is:

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We plug in the given values:

Density = \frac{12.93 \ g}{1.45 \ mL}

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Which is a correct description of the organization of subatomic particles in atoms?

Protons and neutrons are tightly packed into a small nucleus. Electrons occupy the space
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hope this helps.
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What piece of equipment is used to measure: length
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Answer:

Ruler

Explanation:

Ruler and eraser kakgjwjeigidiifigig

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