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Degger [83]
3 years ago
15

Annie is trying to attract her metal pencil box with a magnet from the other side of her desk. The pencil box does not move. Wha

t is most likely true?
A. The pencil box is repelling the force of the magnet.
B. The pencil box can not move without touching the magnet.
C. The pencils inside the box are repelling the magnet.
D. The pencil box is too far away from the magnet to make it move.
Chemistry
1 answer:
elena55 [62]3 years ago
8 0

Answer:D

Explanation:because The farther an object is from a magnet are apart from each other, the weaker the repulsion force will be.

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3 years ago
Predict the order of elution if you were to attempt to separate using column chromatography on silica gel and with a gradient el
Minchanka [31]

Answer:

Follows this order: B=> A => C.

Explanation:

NB: kindly check the attachment for the diagram of compounds A, B and C.

Elution is a very important concept in chromatography separation techniques. It deals with the use of eluent in the removal of an adsobate from an adsorbent. The principle behind Elution is just about how polar the solvent is.

So, in this question Compound B will go with the Elution first because of its polarity. Compound B has lesser polarity as compared to Compounds A and B.

Compound A will then elutes second because of its polarity too as resonance increases its polarity.

Last, compound C elutes because it has the highest polarity which is caused by electronegative atoms.

6 0
3 years ago
Draw one line connecting each factor that increases the rate of a
VLD [36.1K]

Answer:

Adding a catalyst - More collisions every second and more collisions with enough energy to break bonds.

Increase in pressure - more collisions every second

Increase in temperature - more collisions every second with enough energy to break bonds

Explanation:

According to the collision theory, chemical reaction occurs as a result of collision between reacting particles. Only particles that possess energy above the activation energy of the reaction can collide and result in product formation. Collision of particles having energy less than the activation energy merely result in elastic collisions.

Adding a catalyst lowers the activation energy of the reaction. If the activation energy is lowered, more reactants collide and more of those collisions now have enough energy to break bonds.

When the temperature is increased, the particles become more energetic hence more collisions with energy to break bonds occur.

Increase in pressure brings the reactant particles into close proximity hence more collisions occur.

4 0
2 years ago
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