1. Write chemical reaction of burning of magnesium
2. Discuss about the reactivity of magnesium
3. Discuss the nature of magnesium oxide whether it is acidic or basic.
4. What will happen?. When magnesium oxide dissolved in water and tested by red litmus.
5. When Mg burns, which type of flame is obtained.
pls answer which u can

Answers

Answer 1

Answer:

1.Mg+O2.......MgO2

Explanation:

2.Very reactive towards halogens and reacts with water at room temperature. 3, Magnesium oxide is a simple basic oxide. 4.It will react with water to form magnesium hydroxide which is a base turning red litmus to blue 5.should be white. hope it helped. I help people although when I post a question it is left unanswered and then gets answers after two days when I don't really need it


Related Questions

What are the reactants of photosynthesis?

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Answer:

The photosynthesis chemical equation states that the reactants (carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas. The single chemical equation represents the overall process of photosynthesis.

Explanation:

compound name of SO2

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The compound name is SO2 is Sulfur dioxide. I hope this helps!!

8. Describe how crystals of copper sulphate are prepared.​

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Answer:

Take a cupful of water in a beaker and add a few drops of dilute sulphuric acid. Heat the water. When it starts boiling, add copper sulphate powder slowly while stirring continuously. ... Crystals of copper sulphate will be seen at the bottom of the beaker.

Hope it helps

Which of these statements describes a chemical property?

Answers

Answer:

it rusts when exposed to air

Answer:

A

Explanation:

Why MgO will form after Mg reacting with CuO? (mcq)
Mg forms positive ions and O forms negative ions
Mg is more reactive than Cu
CuO have loose bonding

Answers

Answer:

Mg is more reactive than Cu

Explanation:

In the reaction between Mg and CuO to form MgO, MgO will form because Mg is more reactive than Cu.

This kind of reaction is called a single replacement or single displacement reaction.

The replacement of a metallic ion in solution by a metal atom higher in the activity series than the metal in solution falls into this category of reactions. The element Mg is higher than Cu in the activity series. The higher an element is in the activity series, the more reactive they are. Since Mg is more reactive, it will displace the Cu from CuO.

Which of the following is NOT an example of a chemical change? *
O Corrosion
O Grinding
O Combustion
O Rust

Answers

Grinding as it’s a physical not chemical change :)

Describe the specific steps a scientist would take to solve a particular problem

Answers

Answer:

scientific method

Explanation:

- make an observation

- ask a question

- form a hypothesis

- make a prediction based on the hypothesis

- test the prediction

- iterate: use the results to make new hypotheses or predictions  

The transition metals (with the exception of Zn, Cd and Hg) are very much hard and have low volatility. Why Zn ,Cd and Hg has low melting points. (a) These have all their electrons paired. (b) These have maximum number of unpaired electrons. (c) These have very strong metallic bonding. (d) These have more metal-metal bonding.

Answers

Answer:

Zn ,Cd and Hg has low melting points because - These have all their electrons paired.

Explanation:

These have all their electrons paired -: All the electrons in the d-subshell are combined with Zn , Cd and Hg. The metallic bonds present in them are, therefore, weak. This is why they have low points of melting and bolting. therefore , this statement is true. These have maximum number of unpaired electrons. Since , these transition metals have all electrons paired , so this statement is incorrect.These have very strong metallic bonding -: Zn, Cd and Hg d-orbital are completely filled. They have poor metallic bonding and less compact packing due to their fully filled d-orbitals, so all of them are volatile in nature. Therefore, this statement is also not valid .These have more metal-metal bonding. -: Since , their metallic bond is weak , so this statement is not true .

Hence , the correct option is A (These have all their electrons paired).

Which of the following wave types must have a medium to travel?
A. Ultraviolet light
B. Microwaves
C. Seismic (earthquake) waves
D. Radio waves
E. X rays

Answers

Answer:

it is B

Explanation:

Answer: B microwaves

WILL MARK BRAINLIEST!!!! HELPPPP
what is the difference between simple distillation and fractional distillation

Answers

Answer:

A single distillation cycle is enough to separate the mixture. ... Simple distillation is the method used to separate substances in mixtures with significantly different boiling points, while fractional distillation is used for mixtures containing chemicals with boiling points close to each other.

Explanation:

A roller coaster with a mass of 20kg sits at the top of a 30 m high hill. What is the Potential energy of the roller coaster?
(Formula: PE=mgh)
(g= 9.8m/s)

Answers

Answer:

The answer is 5880 J

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

We have

PE = 20 × 30 × 9.8

We have the final answer as

5880 J

Hope this helps you

What are the benefits and dangers of the Iron element in our daily life?

Answers

Benefits; helps our red blood cells transport oxygen all around our body

HELP!!!
write the scientific names of these ionic compounds

Answers

Answer:

• Copper chloride

• Copper (II) chloride

• Iron (II) sulfide

• Iron (III) sulfide

helppppppppppppp plzzzzzzzz Identify each structure based on its label.

Compound A is a
amine.
Compound B is a
amine.
Compound C is a
amine.
Compound D is
.

Answers

A I hope it helps :)

Answer:

kldja

Explanation:

A.) primary

B.) tertiary

C.) secondary

D.) ammonia

edge2020

What is the effect of tap water, sea water, and rainwater on the rusting rate of iron?
(Please i need an answer π-π) ​

Answers

Answer:

The more acidic the solution the faster it rusts. More Na = more rust

Explanation:

An object with a mass of 1.2 g takes up a space of 2.4 mL. What is it's density?

Answers

Answer:

The answer is 0.5 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{1.2}{2.4} \\ [/tex]

We have the final answer as

0.5 g/mL.

Hope this helps you

The formula for density is almost always expressed as grams per milliliter in chemistry. To find the density of this object, simply divide the number of grams by the number of milliliters.

Therefore, we get:

1.2g / 2.4 mL = 0.5g/mL

This results in a density of 0.5g/mL!

what is the journey around the sun by earth called, and how long does it take?

Answers

Answer:

Its called ecliptic and it takes 365 days

Explanation:

Answer:

The journey around the Sun by Earth is called a revolution, it takes 365-and-a-quarter-days.

Explanation:

Jack has a rock.the rock has a mass of 14g and a volume of 2cm^3.what is the density of the rock?

1
SEE ANSWER

ADD ANSWER

Answers

Answer:

7

g

c

m

3

Explanation:

A physical change is easier / more difficult to reverse than a chemical change.

Answers

Answer:

the answer is that a physical change is easier to reverse then a chemical change.

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A car travels 45 miles per hour. What is this speed in feet per hour?

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Answer:

64

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It would be 45 distance for feet per hour

What are natural resources

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Answer:

resources that come from the ground or eath naturally which also means that those minerals like coal take hundreds of years to be created

i need help please!

asap

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Answer:

Earth is pulling up on the book with a force of 4n i think

Explanation:

What is Aerosol,sol and gel​

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Aerosol: When particles of solid or liquid get dispersed in a gaseous medium, the mixture is known as Aerosol. ... Sol: Sol is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid. • Gel: Gel is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid.

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. The chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production. c. Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. Chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone.

Answers

Answer:

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer?  Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.

Explanation:

The statement for small quantities of chlorofluorocarbons so harmful to the ozone layer is "Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone."

What is ozone layer?

The ozone layer is a thin layer of air in the Earth's atmosphere that absorbs nearly all of the sun's damaging UV radiation.

What is CFCs?

CFCs (chlorofluorocarbons) are harmless and nonflammable compounds made up of carbon, chlorine, and fluorine atoms.

The earth's protective ozone layer is destroyed by chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and halons, which shield the earth from damaging ultraviolet (UV-B) rays released by the sun. CFCs and HCFCs also warm the earth's lower atmosphere, causing global climate change.

When some substances are exposed to high UV radiation in the stratosphere, they emit chlorine or bromine. Ozone-depleting chemicals are compounds that contribute to ozone depletion (ODS). Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride, and methyl chloroform are examples of ODS that produce chlorine. Halons and methyl bromide are two ODS that emit bromine.

Because there isn't much ozone in the atmosphere, what little there is is critical for protecting the Earth's surface from excessive UV light from the Sun. It turns out that it reacts with chlorine, which means that chlorine effectively eliminates ozone.

When the chlorine in CFCs combines with ultraviolet light, it releases chlorine, which then reacts with ozone, reducing the protection humans get from ultraviolet light, allowing more CFCs to release chlorine, and so on. Multiple ozone molecules will interact with one free chlorine atom, which is free because UV light has hit the CFC molecule. As a result, the damage it can cause is likely to be significantly more than you might imagine.

Hence the correct option is c.

Learn more about ozone layer and CFCs here

https://brainly.com/question/14330630

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What is the significance of an electronegativity difference of 1.7 between 2
atoms?
O A. It tells which atoms form positive ions and which atoms form
negative ions.
OB. It represents the boundary between what is considered to be an
ionic or a covalent bond.
C. It determines if the 2 atoms will react to form a molecule.
D. It identifies which metal atoms will join together to form metallic
bonds
Am

Answers

B. It represents the boundary between what is considered to be an  ionic or a covalent bond.

Further explanation

Electronegativity is the ability of atoms to attract electrons, especially in covalent bonds (sharing of electron pairs)

In a periodic system, electronegativity increases in a group, from bottom to top, and in a period from left to right.

From this difference in electronegativity, we can determine the ionic compound, polar or non-polar

Pauling determined the electronegativity scale (based on bond energies), between 0.7 - 4 (Fluorine has the highest number of electronegativities: 4)

Polar covalent compounds have a large electronegativity difference, while nonpolar compounds have a small electronegativity difference.

We can use the difference in electronegativity between the 2 bonded atoms to determine their polarity

<0.5: covalent non polar 0.5- 1.7: covalent polar > 1.7 : ion

Example

H₂O

H = 2.1

O = 3.5

H₂O = 3.5-2.1 = 1.4 >> polar

O₂

= 3.5-3.5 = 0 >> non polar

Please help ASAP 100 points points help I will mark you as brainlister

Answers

this is lithium ion with a +1 charge

Lithium ion with 1+ charge

True or false

Each family represents the number of energy levels present in an atom of the element.

Answers

Answer:

true because of the elements

Why is the nitrogen cycle considered a closed system?

Answers

Answer:

because nitrogen is fixed by bacteria and assimilated by plants

Explanation:

Answer:

It is a considered a closed system because nitrogen is fixed by bacteria and is taken in by plants.

Explanation:

Is this actually right

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Answer:

what?????????i don't see a question

Answer:

Yes

Explanation:

Please can I have help on these two questions I’ll be very grateful!!!!!!

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Answer:

-1 IS THE CHARGE OF ELECTRON AS THEY ARE NEGATIVE

MARK ME AS BRAINLIEST IF U FOUND IT HELPFUL

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