Please Help with 2. Thanks

Answer:

B. Extrusive Igneous rock

Answer:

Explanation:

1.  AgNO3 + KCl = AgCl + KNO3

2. SO3 + H2O = H2SO4

3. 2 KI + Cl2 = 2 KCl + I2

4. 2 NaHCO3 = Na2CO3 + CO2 + H2O

5. Zn + 2 HCl = ZnCl2 + H2

6. BaCl2 + Na2SO4 = BaSO4 + 2 NaCl

Answer:

oh no

Explanation:

I would help but I have no clue!!!

I'm so sorry.

Answer:

For balancing this equation

we need to put

Ag2O. = 2

Ag = 4

O2 = 1

Hope it will help

The balanced chemical equation of decomposition of silver oxide is 2 Ag₂O -> 4 Ag + O₂.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ5

Answer:

Led is a light-emitting diode, a semiconductor diode that glows when a voltage is applied. So, there is always a sure result of whether a substance conducts electricity or not as the light glows. That is why it is a better option for testing conduction of electricity.

Explanation:

Answer: TRUE

Explanation:

Option (1) represents the Lewis electron-dot diagram correctly containing nitrogen in the equation.

Lewis Structure is a very simplified representation of the valence shell electrons in a molecule.  It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms.

Valence electrons are given by hydrogen atoms = [tex]1\times3=3[/tex]

Valence electrons are given by nitrogen atom = [tex]5\times1=5[/tex]

Total valence electrons = 3 + 5 = 8

So, the calculation above is shown only the first option. So, (1) Lewis electron-dot diagram correctly represents the reactant containing nitrogen in the equation.

To know more about:-

brainly.com/question/20300458

Answer:

116g/mol

Explanation:

Mg=24

NO2=46

multiple 46 by 2and then add 24

The molar mass of  Mg(NO₂)₂ is  116.33 g/mol.

To calculate the molar mass of Mg(NO2)2, we need to determine the atomic masses of each element in the compound and multiply them by their respective subscripts.

The atomic masses of the elements involved are:

Mg (magnesium) = 24.31 g/mol

N (nitrogen) = 14.01 g/mol

O (oxygen) = 16.00 g/mol

The compound Mg(NO₂)₂ contains one magnesium atom (Mg), two nitrate ions (NO₂), and each nitrate ion contains one nitrogen atom (N) and two oxygen atoms (O).

Molar mass of Mg(NO₂)₂ :

Mg: 1 × 24.31 g/mol = 24.31 g/mol

N: 2 × 14.01 g/mol = 28.02 g/mol

O: 4 × 16.00 g/mol = 64.00 g/mol

Now, add up the individual masses:

24.31 g/mol + 28.02 g/mol + 64.00 g/mol = 116.33 g/mol

Therefore, the molar mass of Mg(NO₂)₂  is 116.33 g/mol.

Learn more about molar mass here:

https://brainly.com/question/31545539

#SPJ 6

Answer:

electronic configuration

Answer:

A. Florine has a stronger pull than Magnesium

Explanation:

Electronegativity refers to the tendency in which an tom would attract electrons to itself.

Below each element in the periodic table is their electronegativity value. Florine has the highest electronegativity value of 4.0.

Going through options;

A. Florine has a stronger pull than Magnesium

Florine = 4.0

Magnesium = 1.2

This correct

B. Hydrogen has a stronger pull than Phosphorus

Hydrogen = 2.1

Phosphorus = 2.1

This is wrong

C. Potassium has a stronger pull than Sodium

Potassium = 0.8

Sodium = 0.9

This is wrong

D. Iron has a stronger pull than Bromine

Iron = 1.8

Bromine = 2.8

This is wrong

Answer: it is a chemical change

Explanation:

Answer:

Try true

Explanation:

But note I'm not sure

Explanation:

it is true

hope I helped you!! :))

Answer:

5

Explanation:

20/4

Answer:

Drinking water can be produced from waste water and from lakes but the difference is in the difficulty of producing water which we can consume.

Drinking water should be clean and toxic free so that if does not affect the human body. Waste water carry more toxic matter in comparison to lake water that's why, producing drinking water from waste water takes more time, expensive and difficult.

So, producing drinking water from waste water is more difficult as it require the removal of more toxic matter than water in lakes.

The question is incomplete. The complete question is :

A worker paints a 5.2 foot wide crosswalk on a street her boss tells her to make crosswalk 1.25 feet wider. How wide is the finished crossroad ?

Solution :

It is given that the worker paints a crossroad on a street whose width is = 5.2 feet.

The boss of the worker asks the worker to make the width of the cross road 1.25 feet more wider.

Thus the required width of the cross road is = 5.2 feet + 1.25 feet

                                                                         = 6.45 feet.

Therefore the finished cross road is = 6.45 feet wide.

Answer:

1.Ca(OH)2

2.Mg(OH)2

3.Al2SO4

4.Na2CO3

5.Zn3(PO4)2

6.LiNO3

7.CuCO3

8. K2CO3

9.MgSO4

10.Ca3(PO4)2

Answer:

Double Displacement (Acid-Base)

Explanation:

sorry the pic is blocked

Answer          k

Explanation:    better luck

Answer:

[;

Explanation:

Mudflows (geosphere) and flooding may occur downstream from volcanoes and may inundate streamside communities (biosphere).

Metallic Minerals will be minerals in which metal components are available in their crude structure. Non-metallic minerals don't contain any metal substances in them. At the point when metallic minerals are dissolved another item is shaped. Non-metallic minerals are frequently discovered installed in youthful overlay mountains and sedimentary rocks.

Answer:

particulates and gases

Explanation:

Answer:

The answer is argon. Pls mark as brainliest

Answer:

B) is true

Explanation:

because in the 24th century that we are now people have created machine that can work without energy

The transfer of energy between systems through work is the expansion of gas in a steam engine. By doing work or by transferring heat, energy can be transferred. Therefore, option B is correct option.

Energy transfer is a phenomenon in which energy transfer from one matter to another matter. energy requirement is necessary to move nay object so work has to be done by the gas to the piston.

Heat can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules.  Due to the conservation of energy, it is possible to synthesize a machine that would never need energy.

Therefore, the option B is correct option that is because of the conservation of energy, it is possible to have a machine that would never need energy.

Learn more about energy transfer, here:

https://brainly.com/question/18649915

#SPJ2

Answer:

A boiling chip, boiling stone, porous bit or anti-bumping granule is a tiny, unevenly shaped piece of substance added to liquids to make them boil more calmly.

These help in making the liquid boil more easily

Answer:

umm i think it's called boiling chip