Sapphires and Rubies are composed of ? A. oliveB. turquoiseC. corundumD. quartz

Chemistry

2 answers:

Aleonysh [2.5K]3 years ago

8 0

Answer:

Explanation:

it is corundum now please follow me

MakcuM [25]3 years ago

6 0

Answer: corundum

Explanation: Both are made of alumina and oxygen, but they just differ in color. When a corundum is red, it is classified as a ruby, and when it’s blue, it is called a sapphire.

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In an electrochemical cell, electrons travel in which direction? * (a) from the anode to the cathode through the external circui

kompoz [17]

Answer:

(a) from the anode to the cathode through the external circuit

Explanation:

In an electrochemical cell, there are two half cells; the oxidation half cell and reduction half cell. Oxidation typically refers to loss of electrons and reduction refers to gain of electrons.

Electrons always flow from the anode to the cathode or from the oxidation half cell to the reduction half cell.

The electrical circuit in an electrochemical cell confirms the flow of electron. Usually a light bulb is attached. The correct option is;

(a) from the anode to the cathode through the external circuit

5 0

3 years ago

Choose a depiction of a gas sample containing equal molar amounts of xenon and argon as described by kinetic molecular theory. R

Setler79 [48]

Answer:

On the attached picture.

Explanation:

Hello,

At first, it is important to remember that kinetic molecular theory help us understand how the molecules of a gas behave in terms of motion. In such a way, the relative velocity of a gas molecule has the following relationship with the gas' molar mass:

$V$ ∝ $\frac{1}{\sqrt{M} }$

That is, an inversely proportional relationship which allows us to infer that the bigger the molecule the slower it. In this manner, as argon is smaller than xenon, it will move faster.

Now, as the gases are in equal molar amounts and considering that argon moves faster, on the attached picture you will find the suitable depiction of the gas sample, since red dots (argon) have a larger tail than the blue dots (xenon).

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