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alexira [117]
3 years ago
6

NEED HELP ASAP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!
Cassie has a magnet that she holds over an iron nail. The nail moves toward the magnet before the magnet touches it.

Which of the following is true about magnetism?
A.
Magnetism is a force that must directly touch an object in order to move it.
B.
Magnetism is a force that acts at a distance and cannot be seen.
C.
Magnetism is not a force, and therefore it cannot move an object.
D.
Magnetism is a force that can be seen in the air as it moves an object.
Chemistry
1 answer:
erastovalidia [21]3 years ago
5 0

i think it is B. Magnetism is a force that acts at a distance and cannot be seen.

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A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper
natali 33 [55]

Answer:

<h2>Density = 8.96 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

Density =  \frac{mass}{volume}

From the question

mass of copper = 89.6 g

volume = 10 cm³

Substitute the values into the above formula and solve

That's

Density =  \frac{89.6}{10}

We have the final answer as

<h3>Density = 8.96 g/cm³</h3>

Hope this helps you

7 0
4 years ago
Why would chloroethane have a lower boiling point than ethane?
Tom [10]
That is not true. Chloroethane has a greater boiling point than ethane.

This is due to the greater intermolecular attraction forces.

The greater electronegativity of Cl than C's, creates a stronger atraction of the electron cloud toward Cl, driving to the formation of permanent dipoles.

Then, in addition to the dispersion forces (present in the ethane and chlorometane) there are forces due to the attraction between the permanent dipoles, which cause a higher boiling point.
4 0
3 years ago
The reaction H2O(l) + CO2(aq) H2CO3(aq) is at equilibrium. What does this mean?
Leno4ka [110]
It means that the chemical equation is balanced
3 0
3 years ago
Is Plutonium an element, compound, solution* or heterogeneous mixture.
Blizzard [7]

Answer:

Its an element.

Explanation:

94 on the periodic table

8 0
4 years ago
What are 2 substances that will NOT conduct electricity? Plz explain.
lana66690 [7]
Diamond for example, will not conduct electricity as there are no mobile ions or electrons to carry electric charge. all the electrons in the carbon atoms in diamond are used for covalent bonding.

another example is chlorine gas, there are also no mobile electrons to carry electric charge.

most covalent compounds cannot conduct electricity, but most ionic and metallic can. however, there are exceptions of course!
6 0
2 years ago
Read 2 more answers
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