What does Mg stand for in chemistry

Answers

Answer 1

Answer: Mg is an element that stands for Magnesium.

Mg is the chemical symbol for Magnesium.

Answer 2

Answer: - - In relation towards chemistry, Mg is equal to and standing for magnesium(mg).

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A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate. 2KClO3 mc019-1.jpg 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction?
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Which energy transformation occurs when anelectrolytic cell is in operation?
(1) chemical energy → electrical energy
(2) electrical energy → chemical energy
(3) light energy → heat energy
(4) light energy → chemical energy

Answers

The correct answer is option 1. The operation in an electrolytic cell transforms energy from chemical energy to electrical energy. This is a cell which electrolysis occurs to produce electrochemical reaction and eventually producing an electric current.

Answer:

(2) electrical energy -> chemical energy

Explanation:

Castle learning

Knowing the chemical properties of a substance will tell you how the substancea. looks.
c. can be broken down into atoms.
b. smells.
d. reacts with other substances.

Answers

Whereas physical properties of a substance tells us about how the substance looks, smells, etc, the chemical properties of a substance basically tells us how the substance will react with other substances. Therefore, knowing the chemical property of a substance tells us how the substance reacts with others.Hope this helps. Let me know if you need additional help!

d. reacts with other substances.

Consider the reaction below. 2Al2O3 mc019-1.jpg 4Al + 3O2 How many moles of oxygen are produced if 11.0 mol of Al are produced?

Answers

Answer: 8.25 moles of oxygen are produced.

Explanation: The reaction follows:

$2Al_2O_3(s)\rightarrow 4Al(s)+3O_2(g)$

By Stoichiometry,

As, 4 moles of Aluminium is produced by 2 moles of aluminium oxide

11 moles of aluminium will be produced by = $(2)/(4)* 11=5.5moles$

Now, 2 moles of aluminium oxide produces 3 moles of oxygen, so

5.5 moles of Aluminium oxide will produce = $(3)/(2)* 5.5=8.25moles$

Hence, 8.25 moles of oxygen will be produced.

2 Al₂O₃ = 4 Al + 3 O₂

4 moles Al ----------> 3 moles O₂
11.0 moles Al -------> ?

O₂ = 11.0 * 3 / 4

= 8.25 moles of O₂

hope this helps!

How many liters of oxygen at stp are needed to react with 5.2 * 10 to the 22nd power molecules of hydrogen sulfide?

Answers

For the reaction H2S + 2 O2 -> H2SO4

starting with 5.2 x 10^22 molecules of H2S we can calculate the number of moles H2S by dividing by 6.02 x 10^23

We have 0.086 moles H2S

1 mole of H2S reacts with 2 moles of O2 so we need 0.17 moles of O2

1 mole of all gases at stp occupy 22.4 liters of space

.17 x 22.4 = 3.08 liters of O2 needed to react with 5.2 x 10^22 molecules of H2S

The solid part of the blood consists of _____ and _____ blood cells.red
white
black
blue

Answers

Your blood is a living part or tissue of your body that composed of liquid and solid part. The liquid part is made of plasma and mineral like, water, salt and protein. While the solid part is composed of red blood cells, white blood cells and also platelets

What type of element is chlorine? metal.
alkaline earth metal.
halogen.
inner transition metal.

Answers

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, chlorine belongs to halogen family.

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

Chlorine is a Halogen. These are all elements in Group 17 (right next to the Nobel Gases). Atomic number of chlorine is 17. Chlorine needs only one electron to completes its octet. Chlorine exist as gas.

Therefore, chlorine belongs to halogen family.

To know more about element, here:

brainly.com/question/8460633

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It is a Halogen. These are all elements in Group 17 (right next to the Nobel Gases)

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