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zheka24 [161]
2 years ago
10

The picture below shows the positions of the Earth, Moon, and Sun during an eclipse.

Chemistry
2 answers:
SVETLANKA909090 [29]2 years ago
7 0

Answer:

it is option c liner eclipse

IRISSAK [1]2 years ago
3 0

Answer:

A-It is a lunar eclipse, in which the Earth casts a shadow on the Moon.

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Please help me..<br>what is carbon 1/12​
tatuchka [14]

Answer:

It is expressed as a multiple of one-twelfth the mass of the carbon-12 atom, 1.992646547 × 10−23 gram, which is assigned an atomic mass of 12 units. ... In this scale 1 atomic mass unit (amu) corresponds to 1.660539040 × 10−24 gram.

6 0
3 years ago
Which kind of force is a dipole-dipole force?
dexar [7]

Answer:

Explanation:

Types of Attractive Intermolecular Forces. Dipole-dipole forces: electrostatic interactions of permanent dipoles in molecules; includes hydrogen bonding.

This is all I can think of, I hope this has helped you.

-QueenBeauty666-

7 0
3 years ago
Read 2 more answers
The amino acids are combinations of
aalyn [17]

Answer:  The correct answer is:  [B]:

_________________________________________________

                         " organic acid and amines " .

_________________________________________________

<u>Note</u>:  Choice B:  "organic acid and amines" ;

            is the only answer choice that contains "amines" (hint: <u> amin</u><u>o acid</u> / <u>amin</u><u>e)</u> ;  which are "proteins" .

           As such;  Choice "B" is the <u><em>only</em></u>  correct answer choice.

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Hope this helps!

    Best wishes to you!

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5 0
3 years ago
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Write the formula for potassium oxide. why do you not need prefixes in the name ​
Molodets [167]

Potassium oxide: K₂O.

There's no need for prefixes since K₂O is an ionic compound.

<h3>Explanation</h3>

Find the two elements on a periodic table:

  • Potassium- K- on the left end of period four.
  • Oxygen- O- near the right end of periodic two.

Elements on the bottom-left corner of the periodic table are metals. Those on the top-right corner are nonmetals.

  • Potassium is a metal,
  • Oxygen is a nonmetal.

A metal and a nonmetal combine to form an ionic compound. Potassium oxide is likely to be an ionic compound. It contains two types of ions:

  • Potassium ions: Potassium is group 1 of the periodic table. It is an alkaline metal. Like other alkaline metals such as sodium Na, potassium K tends to lose one electron and form ions of charge +1 in compounds. The ion would be K⁺.
  • Oxide ions from oxygen: Oxygen is the second most electronegative element on the periodic table. It tends to gain two electrons and form the oxide ion \text{O}^{2-} when it combines with metals.

The two types of ions carry opposite charges. They shall pair up at a certain ratio such that they balance the charge on each other. The charge on each \text{O}^{2-} ion is twice that on a \text{K}^{+} ion. Each \text{K}^{+} would pair up with two \text{O}^{2-}. Hence the subscript in the formula: \text{K}_{\bf 2}\text{O}.

There are two classes of compounds:

  • Covalent compounds, which need prefixes, and
  • Ionic compounds, which need no prefix.

Prefixes are needed only in covalent compounds. For instance in the covalent compound carbon dioxide \text{CO}_2, the prefix di- indicates that there are two oxygen atoms in the formula \text{CO}_2. However, there's no need for prefix in ionic compounds such as \text{K}_2\text{O}.

7 0
3 years ago
If a 8 N force acts on a 4kg object, what is the resulting acceleration
cluponka [151]
The answer is 2 because you have to divide these numbers.<span />
7 0
3 years ago
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