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inn [45]
3 years ago
15

Which statement describes how a covalent molecule would be formed? A) an atom of an element with atomic number 12 reacts with on

e oxygen atom B) an atom of an element with atomic number 8 reacts with two hydrogen atoms C) an atom of an element with atomic number 20 reacts with two fluorine atoms D) two atoms of an element with atomic number 11 react with one sulfur atom
Physics
2 answers:
Juli2301 [7.4K]3 years ago
7 0
<span>an atom of an element with atomic number 8 reacts with two hydrogen atoms 

</span>
Anton [14]3 years ago
3 0

The answer is letter B .

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Which value is most likely to be the pH of a salt that is formed by the reaction of a strong acid and a weak base?
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A chef places an open sack of flour on a kitchen scale. The scale reading of
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Answer:

Explanation:

Given

Initial reading on scale =40 N

So, we can conclude that weight of the sack is 40 N

After this a 10 N force is applied upward on the sack such that the net force becomes (40-10) N downward (because downward force is more)

This net downward force is the resultant of earth graviational pull and the applied upward force.

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3 years ago
A student performs Young’s double-slit experiment with slits that are separated by 0.160 mm. She observes the interference patte
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3 years ago
Which Of The Following Statements Are True?
aksik [14]

Answer:

A) The north pole of a bar magnet will attract the south pole of another bar magnet.

B) Earth's geographic north pole is actually a magnetic south pole.

E) The south poles of two bar magnets will repel each other.

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<u>According to </u><u>classical physics</u>, a magnetic field always has two associated magnetic poles (north and south), the same happens with magnets. This means that if we break a magnet in half, we will have two magnets, where each new magnet will have a new south pole, and a new north pole.

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In this context,  Earth is similar to a magnetic bar with a north pole and a south pole. This means, the axis that crosses the Earth from pole to pole is like a big magnet.  

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Then, for the case of the Earth, the north pole of the magnet is located towards the geographic south pole and the south pole of the magnet is near the geographic north pole.  

And it is for this reason, moreover, that the magnetic field lines enter the Earth through its magnetic south pole (which is the geographic north pole).

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