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zloy xaker [14]
3 years ago
5

Britney has four different materials of different masses. She decides to test their electrical conductivity by connecting each i

n a closed electric circuit and then measuring the amount of current that passes through them. Her results are collected in the table below. Material Mass (g) Current (A) W 10.0 0.0 X 65.0 0.0 Y 23.5 4.0 Z 82.0 0.0 Which material is most likely a metal? A. X B. Y C. W D. Z
Chemistry
2 answers:
Darina [25.2K]3 years ago
8 0

Answer:

The answer is y

Explanation:

substance y is most likely metal because metal has the highest conductivity

Elden [556K]3 years ago
6 0

idk

im sorry

Explanation:

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Alona [7]

I'm not sure but it should be 7.31 times 2 times 3.14 or pi

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If you need to round to the nearest tenth it will be 45.9

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Vladimir79 [104]

Answer:

Option b.) Potassium ion, is written correctly.

Explanation:

Hope this helps! :)

7 0
3 years ago
The molarity of a 2 liter aqueous solution that contains 222.2 grams of dissolved calcium chloride ( CaCl2), expressed with two
sveta [45]

Answer:

The answer to your question is 1 M

Explanation:

Data

Molarity = ?

mass of CaCl₂ = 222.2 g

Volume = 2 l

Process

1.- Calculate the molar mass of CaCl₂

CaCl₂ = 40 + (35.5 x 2) = 40 + 71 = 111 g

2.- Calculate the moles of CaCl₂

                    111g of CaCl₂ ---------------- 1 mol

              222.2 f of CaCl₂  ----------------  x

                      x = (222.2 x 1) / 111

                      x = 222.2 / 111

                      x = 2 moles

3.- Calculate the Molarity

Molarity = moles / Volume

-Substitution

Molarity = 2/2

-Result

Molarity = 1

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Arte-miy333 [17]
The correct answer among the choices given is option A. Eustachian, Pharynx, Bronchi are structures that ensembles a tube. The Eustachian tube is a narrow passage from the pharynx to the middle ear. Pharynx is a passageway leading from the oral and nasal cavities to the larynx and the esophagus. Lastly, bronchi is an airway in the respiratory tract.
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