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nadezda [96]
3 years ago
15

1/4 checkpoint

Chemistry
2 answers:
DochEvi [55]3 years ago
7 0

Answer:

here's the answers

Explanation:

Anna11 [10]3 years ago
7 0

Answer:

1. 2.02

2. 2.15

3. 0.13

Explanation:

doing it now of EDG :)

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5. What is the molar mass of ethanol (C2H5OH)?
AVprozaik [17]
<h2>D) 46.07 g/mol</h2>

The molar mass is given by the sum of the atomic masses of the component elements of the substance.

In our case, the substance is ethanol or C₂H₅OH.

A_C=12.011

A_H=1.0079

A_O=15.9994

\mathcal M_{C_2H_5OH} = 2 \times A_C + 6 \times A_H + A_O = 2 \times 12.011 + 6 \times 1.00079+ 15.999 4= 24.022 + 6.0474 + 15.9994= 46.069≈ \boxed{46.07 \dfrac{g}{mol}}

5 0
3 years ago
The Lanthanides are often be found below the Periodic Table so it will fit nicely on a textbook page. If they were inserted into
Annette [7]

Answer:

period 6

Explanation:

If the lanthanides were inserted into the periodic table, they would go into periodic 6.

Their atomic number is between 57 - 71 from element lanthanum to lutetium.

  • The elements in this period are 15 in number.
  • They are also know as elements in the f-block.

The elements that makes up the series are:

Lanthanum

Cerium

Praseodymium

Neodymium

Promethium

Samarium

Europium

Gadolinium

Terbium

Dysprosium

Holmium

Erbium

Thulium

Ytterbium

Lutetium

6 0
3 years ago
What does an electric field<br> surround?
allsm [11]

Answer:

An electric field is the physical field that surrounds each electric charge and exerts force on all other charges in the field, either attracting or repelling them.

______________

meow

8 0
3 years ago
How many valence electrons should you use to draw a Lewis structure of ammonia (NH3)?
Mekhanik [1.2K]
Hello there,


Your correct answer would be 8.<span> There are </span>8 valence electrons<span> available for the Lewis structure for NH</span>3<span>.

Hope this helps

~Hottwizzlers</span>
4 0
3 years ago
Read 2 more answers
why is it much easier for group 14 elements to become stable by sharing instead of transferring electrons9
Effectus [21]

Because they are closer to the farther end of the periodic table. Since they are closer to the farther end they don't want to give away their electrons because it would be easier for them to just steal them from other atoms.

5 0
3 years ago
Read 2 more answers
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