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klemol [59]
3 years ago
11

Please answer he questions

Chemistry
1 answer:
Nastasia [14]3 years ago
6 0

"Work done by a constant force on an object is the product of the force and the distance moved by the object in the direction of the force" -textbook

There is work done ONLY if the direction of the force and the direction the item is moving are the same. In figure A, the direction of the force (the lifting) is upwards (defying gravity), and the book is moving upwards, so work is done. In figure B, the force is still moving upwards (the person is carrying the books) but the book is moving to the right, so there is NO work done.

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Alex17521 [72]
Hello!

The reaction that the graph represents is A. Exothermic because Hrxn=-167 kJ

To calculate Hrxn we apply the following equation:

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6 0
3 years ago
Liquids do not have the energy to overcome the ___ and move to the gaseous state.
Ugo [173]

Answer - Inter-molecular attractions

Explanation-

As we know everything around us is made up of matter that means everything has molecules as their basic structure. The state of anything is decided by the spaces between the molecules.

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4 0
3 years ago
Please helppp asaappppppp
Zanzabum

Answer:

B. s, p, d, f

Explanation:

These things are often referred to as suborbitals and you normally have s,p,d,f.

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P has 3 orbitals

D has 5 orbitals

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and each orbital can house 2 electrons

8 0
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Which pairs of matter demonstrate the laws of conservation?


The only correct ones are:


a Snowman and the melted remains of the same Snowman,


a lump of clay and the same lump broken into three pieces,


one apple and the same Apple cut into slices.


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