When a magnesium is heated, it burns in air with a dazzling white flame to form a white powder .What it called? ​

Answers

Answer 1
When a magnesium is heated, it burns in air with a dazzling white flame to form a white powder called Magnesium oxide.

Magnesium + oxygen → Magnesium oxide.

The burning of magnesium in air to form magnesium oxide is an example of a chemical reaction . In this chemical reaction there are two reactants ' magnesium and oxygen ' but only one product ' magnesium oxide '. The properties of the product magnesium oxide are entirely different from those of the reactants magnesium and oxygen.

Balanced Equation

[tex]\purple{\bf{2Mg + O_2 = 2MgO}}[/tex]

Physical states

Magnesium → Mg ( In Solid State)

Oxygen → [tex]\sf{O_2}[/tex] ( Gaseous State)

Magnesium Oxide → MgO ( In Solid State Or White powder)

_______________________________________

Answer 2

It is magnesium Oxide MgO2


Related Questions

grade 11 chemistry(GASES) why does does cold soda taste great but warm soda taste flat?

Answers

Why does cold soda taste great but warm soda taste flat ?

Answer

When a carbonated drink is at room temperature, it is less fizzy and taste flat. Cool it down and it will taste better because the drink is designed to be drank at a lower temperature for optimal fizz and taste.

HEY!!^^

have a great day^^

thank me later^^^

carryonlearing°^^^^

the high electrical conductivity of metals is primarily due to

Answers

High conductivity of metals is caused by electrons that are free to move through the lattice.

hope this helps!

arrange the bromine-containing compounds cabr2, br2, asbr3, cbr4 in order of increasing normal boiling point.

Answers

Answer:

Br2, CBr4, AsBr3, CaBr2. this is the increasing order of boiling point

The arrangement of given compound in the increasing order of normal boiling point is Br₂ < CBr₄ < AsBr₃ < CaBr₂.

What is normal boiling point?

Norma boiling point of any liquid is that point where the vapor pressure is equal to the standard sea level atmospheric pressure.

And boiling point is directly proportional to the strength of bond which is present between the atoms of any compound.

As we know that ionic bond is the strongest bond and in CaBr₂ ionic bond is present so the boiling point of this compound will be highest.In AsBr₃, bromine is more electronegative than arsenic and arsenic also have one lone pair on it so some dipole moment develope in it and then this compound will have boiling point less than CaBr₂.CBr₄ is a covalent compound as in this compound bromine is present which is more electronegative but overall dipole moment of this compound is zero.Br₂ is also a covalent molecule and it has no dipole moment in it and have minimun boiling point among all compounds.

So, correct order will be Br₂ < CBr₄ < AsBr₃ < CaBr₂.

To know more about boiling point, visit the below link:
https://brainly.com/question/2125632

Give one example of how environmental factor could influence the way a gene is expressed.

Answers

Answer:

The presence of drugs or chemicals in an organisms environment can also influence gene expression in the orgains.


Find the volume of hydrogen gas that reacts with 200 cm of nitrogen gas
measured at the same temperature and pressure.
N2 + 3H2(g) 2NH3(g)

Answers

Answer:

15 L

Explanation:

The important thing to remember about reactions that involve gases kept under the same conditions for pressure and temperature is that the mole ratios that exist between the gases are equivalent to volume ratios.

This can be proven using the ideal gas law equation for two gases kept at a temperature

T

and a pressure

P

.

P

V

1

=

n

1

R

T

the ideal gas law equation for the first gas

P

V

2

=

n

2

R

T

the ideal gas law equation for the second gas

Divided these two equations to get

P

V

1

P

V

2

=

n

1

R

T

n

2

R

T

This means that you have

n

1

n

2

=

V

1

V

2

the mole ratio is equivalent to the volume ratio

In your case, the balanced chemical equation looks like this

N

2(g]

+

3

H

2(g]

2

NH

3(g]

The problem tells you that this reaction takes place at constant temperature and pressure. You don't need to know the exact values, you just need to know that they are constant for all three chemical species.

You can thus say that since you have a

1

:

3

mole ratio between nitrogen gas and oxygen gas, you will also have a

1

:

3

the volume ratio between these two gases

n

N

2

n

H

2

=

V

N

2

V

H

2

=

1

3

The volume of hydrogen gas needed to react with that much nitrogen gas will thus be

5.0

L N

2

3

L H

2

1

L N

2

=

15 L H

2

report the elements half life. if we start with 100g of your element (platinum) how long will it take to have 6.26g?

Answers

Answer:

did u get the answer yet

Explanation:

how many moles are there in 1 mole of argon?​

Answers

the atomic mass of argon is 39.948. That means that one mole of argon weighs 39.948 grams (39.948 g/mol).

Minerals are _______ substances with a fixed crystal structure and a unique chemical composition. Processing ore sometimes involves _______ or grinding minerals. Prehistoric people used _______ for knives and arrowheads. The average American house contains about _______ pounds of minerals. Early _______ used rocks as simple tools as early as 2. 6 million years ago.

Answers

Minerals are solid substances with a fixed crystal structure and a unique chemical composition. Processing ore sometimes involves crushing or grinding minerals. Prehistoric people used flints for knives and arrowheads. The average American house contains about 250,000 pounds of minerals. Early Human culture used rocks as simple tools as early as 2. 6 million years ago.

What are minerals?

Minerals are solid substances and are characterized by a fixed crystal structure and a unique chemical composition.

Early hominids used rocks as simple tools before the advent of modern civilization where other materials were used.

Read more on minerals:

https://brainly.com/question/25477252

Answer:

1. naturally occurring

2. crushing

3. flint

4. 250,000

5. hominids

Compounds have the same physical and chemical properties as the elements they are made from? True or false?

Answers

The statement that compounds have the same physical and chemical properties as the elements they are made from is false.

Compounds

Compounds are substances formed when two or more elements are chemically combined together.

For example, water is a chemical compound formed when hydrogen and oxygen are chemically combined in a ratio of 2 to 1.

Properties of compounds

They formation of compounds involves great heat changesThey can be represented by a chemical formula They have properties different from those of the constituent elements

Therefore, the statement that compounds have the same physical and chemical properties as the elements they are made from is false.

Learn more about compounds at: https://brainly.com/question/10942055

*
Which of the following is a acid
нСІ
NaOH
Naci
KOH
Please help I only have until 11:59 to turn in this assignment and I don’t know what I’m doing

Answers

Answer:

 The correct answer is option A, that is, HCl.  

An acid refers to an ion or molecule possessing the tendency of donating a hydrogen ion or a proton, or alternatively, exhibiting a tendency of producing a covalent bond with a pair of electrons. The aqueous Arrhenius acids exhibit characteristic features that offer a practical illustration of an acid.  

The acids can turn blue litmus paper red, can form aqueous solutions with a sour taste, and reacts with bases and some kind of metals to produce salts. One of the general aqueous acids is HCl (hydrochloric acid) that is found in the stomach and stimulates digestive enzymes.  

Explanation:

Pick the odd one out
Paraffin wax
Hexane
Ethanol
Carbon tetrachloride

Answers

Answer:

Ethanol is the odd one.....

Which model of the atom is thought to be true?

A. Protons, electrons, and neutrons are evenly distributed throughout the volume of the atom.
B. The nucleus is made of protons, electrons, and neutrons.
C. Electrons are distributed around the nucleus and occupy almost all the volume of the atom.
D. The nucleus is made of electrons and protons.

Answers

Answer:

Hi the answer should be B or 2

Explanation:

Hope this helps!

What is a trial? please​

Answers

examination by a test; experiment, as in chemistry, metallurgy, etc.

Millikan determined the electron's ______ .

Answers

Answer

In 1909, Robert Millikan and Harvey Fletcher conducted the oil drop experiment to determine the charge of an electron. ... Using the known electric field and the values of gravity and mass, Millikan and Fletcher determined the charge on oil droplets in mechanical equilibrium.

Millikan and fletcher determined the charge on oil droplets in mechanical equilibrium

HEY!

have a good day

thank me later

carryonlearing

calculate the volume in dm3 occupied by 26.4 g of carbon dioxide​

Answers

Density of carbon dioxide=1564kg/m^3Mass=26.4g=0.0264kg

[tex]\\ \sf\longmapsto Density=\dfrac{Mass}{Volume}[/tex]

[tex]\\ \sf\longmapsto Volume=\dfrac{Mass}{Density}[/tex]

[tex]\\ \sf\longmapsto Volume=\dfrac{0.0264}{1564}[/tex]

[tex]\\ \sf\longmapsto Volume=1.687m^3=1.69m^3[/tex]

1m^3=1000dm^3

[tex]\\ \sf\longmapsto Volume=1.69(1000)=1690dm^3[/tex]

If you run a refrigerator in a closed room with the refrigerator door open,the room temperature willA) increase.B) decrease.C) remain unchanged.

Answers

Answer: A increase

Explanation: The temperature of room will increase. If a refrigerator door is open then more flow rate of coolant is required in order to maintain lower temperature So the compressor will be running continuously also heat exchange happening through condenser increases the room temperature rather than decreasing.


Pls answer rn due tmr pls pls fast

Answers

Answer:

From bottom to top, Troposphere, Stratosphere, Mesosphere, Thermosphere, & at the top, Exosphere.

Explanation:

Jane made this picture to represent a chemical reaction:

Two circles, one white and the other gray are shown on the left. A small portion of the two circles overlap and the label below the circles is XY. An arrow pointing right is shown on the right of the overlapping circles. There are two circles on the right of the arrow, one white and the other gray, and there is a plus sign between them. The white circle is labeled X and the gray circle is labeled Y.

Which of the following statements best explains the type of chemical reaction represented by Jane's picture? (5 points)

It represents a synthesis reaction because one combined reactant forms multiple products.

It represents a synthesis reaction because the same atoms are present in the reactants and products.

It represents a decomposition reaction because one reactant breaks apart and forms two products.

It represents a decomposition reaction because the total mass of the products is less than the mass of the reactant.

Answers

The reaction represents a decomposition reaction because XY is broken into its constituents.

A decomposition reaction is one in which the reactant is broken up into its constituents. In this case, the reactant is XY. The reactant is shown in the left hand side. The reactant is broken up to yield the products. X and Y.

Since the reactant was broken up into the one white and one gray circles labelled X and Y, then the reaction is a decomposition reaction.

Learn more about decomposition: https://brainly.com/question/24936069

Answer:

C if your answers are different!

Explanation:

The Statue of Liberty is composed of copper. The smallest particle of any amount of copper is A) an atom. B) an element. C) a compound. Eliminate D) a molecule.

Answers

an atom because its the smallest thing in the entire world and in all orgnaisms

Potassium is a silvery-white, solid metal. Chlorine is a greenish-yellow gas. When these two elements react chemically, they yield potassium chloride which is an odorless salt with a crystal structure. Potassium chloride is used in the production of fertilizer.

Required:
Which part of atomic structure is responsible for the reactivity of atoms?

Answers

the number of electrons in the outermost shell deduces it’s reactivity

The electrons present in the valence shell of an atom are responsible for the reactivity of atoms.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ2

Question 20 0/1 pts What is the frequency of a light wave with the wavelength of 680 nm? 'Reminder: the speed of light is 3.00 X 10 m/s​

Answers

Answer:

[tex]4.4*10^{14}[/tex]Hz

Explanation:

what would happen if we lost our planets core on earth blew up, would we all die or will we lose gravity or suficate, pls help. :I

Answers

Answer: if we lost our core it would be an entire fallout like fallout 76 we would have no way to protect ourselves from the radiation of space except for a select few that actually own astronaut suits tho we would not turn into monsters, sadly :( I wanna be a ghoul

the two stages that take place during distillation are. a.evaporation is folloeed by condensation. b.condensation followed by evaporation​

Answers

Answer:

evapiration followed by condensation

which particle diagram represents a sample of oxygen gas at stp

Answers

The diagram in image (4) in the image attached represents a sample of oxygen gas at stp.

Oxygen is a diatomic molecule, a diatomic molecule is a molecule that consists of only two atoms of the same element. In this case, the oxygen molecule consists of two oxygen atoms.

If we look at the diagram in the image attached very well, we will discover that the image in diagram (4) shows a molecule composed of two atoms of the same element and this fits exactly into the description of the oxygen molecule.

Learn more about diatomic molecules:

Particle diagram 4 represents the particles of oxygen at standard temperature and pressure.

A model of molecular (or diatomic) oxygen, which is made up of two oxygen atoms attached to each other through a covalent bond.

Dioxygen, also known as oxygen, is a naturally occurring molecule made up of two oxygen atoms that attach to each other with a strong covalent bond to form oxygen (dioxygen). Oxygen is sp3-hybridized, i.e. it has 4 sp3 hybrids. One of these hybrid orbitals overlaps with the s orbitals of hydrogen to create the O-h sigma bonds.

To learn more about oxygen refer to the link:

https://brainly.com/question/13905823

#SPJ6

The diagram in question is attached below.

The diagram below shows the Moon at four positions in its orbit around Earth

An observer on Earth could see a solar eclipse when the Moon is at position

Answers

the answer is position no. 4

the expression of potential energy , i.e., P.E.=mgh , where the terms used have their usual meaning​

Answers

Gravitational Potential energy:

The Gravitational potential energy of

an object at a point above the ground

is defined as the work done in raising

it from the ground to that point against

gravity.

Consider an object of mass "m" is raised

to heighth from the ground.

A force is required to do this. the

minimum force required to raise the

object is equal to the weight of the

object[mg]

The object gains energy equal to the

work done on it. Let the work done on

the object against gravity be "w"

WorkDone=W= Force x displacement

=mgxh

..W=mgh

since the workdone on the object is

equal to "mgh" an energy equal to "mgh"

units is gained by object.This is the

potential energy of object at height "h"

.. P.E=mgh

Which term describes the small, somewhat circular pattern of wind?

A Easterlies

B Trade Winds

C polar winds

D convection cells

Answers

Answer:

its D, convection cells

True or false pls sue tmrps

Answers

Answer:

5. False

Explanation:

Drinking contaminated water causes jaundice

look at the chemicals listed below and answer the questions . iron
water
sand
oxygen
gold
carbon dioxide
helium
carbon
rust
seawater
1. Name the two metals
2.Name a gas that is not an element
3.Name a mixture
4.Name a non metallic element that is a solid .​

Answers

Answer:

1. gold and rust

2. carbon dioxide

3. sea water

4. carbon

Answer:

1. Gold and Iron

2. Helium

3. Seawater

4.Rust

Explanation:

How does distillation remove hardness from water​

Answers

Answer:

Distillation can be used to soften water as the water evaporates as it is heated and the ions are left behind.

Hope that helps. x

Answer: Distillation can be used to separate and collect a liquid from a solution. Distillation can also be used to soften water as the water evaporates as it is heated and the ions are left behind. Hard water can be softened by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.

Explanation:

Other Questions
Bella is training for a marathon. She can run 19 miles in 150 minutes. How many miles can she run in 5 hours? 8) The height of a stack of CD cases is Proportional to the number of CDs in the stack. A stack of 6 CDs is 66mm high.* Find the unit rate**a) How high is a stack of 10 CDs?b) Write an equation that relates the height (y) of a stack of CDs and the number of CD cases(x) in the stack.please help I will mark your answer as brainliest geometry word problem:The area of a square is four times the area of a triangle. If the base of the triangle and a side of the square are equal, what is the ratio of the height of the triangle to the side of the square?(A) 1 : 4(B) 1 : 2(C) 2 : 1(D) 3 : 2(E) 2 : 3 Solve the system of equations using the substitution method.S 4x + 5y=7ly=3x +9Enter your answers in the boxes.2X=y= Which person was a citizen who could participate in Athenian democracy? Is gravity alone sufficient to explain the behavior of the tinsel in the Levitating-orb system? Explain why. K2. Calculate the total surface area of cuboids with the following dimensions (b) Length = 1.6 m, breadth = 80 cm, height = 120 cm Which statements always apply to the process of diffusion? check all that apply. the weak base ionization constant (ka) for h2c2o4 is equal to what? Which choice is equivalent to the product below?V8,5O A. 4/10O B. 10-12C. 13O D. 22/10 Will I get help to level up??? what could you do to avoid a miscommunication with a friend How do I find the equation of the line? 3. How large a role do you think public opinion plays in shaping governmental policies in the United States today? The Johnsons are buying a house that costs $210,000 and can afford a 20% down payment. If the Johnsons want the lowest monthly payment, which loan option would you recommend? a. 30 year FHA, 3. 5% down at a fixed rate of 6. 25% b. 30 year fixed, 20% down at a fixed rate of 6% c. 30 year fixed, 10% down at a fixed rate of 6% d. 15 year fixed, 20% down at a fixed rate 5. 5%. 60% of the 7th grade students take the bus. If there were 120 students on the busses, how many 7th grade students are there? Identify chemicals in the brain that are released in greater quantity during moderate tovigorous activity and the effects it can have on a person's mental/emotional health 741.5 FRO What section of the library does this book go in? PLEASE HELP ASAP !! ALL 4 QUESTIONS IN THE PICTURE ! I seriously dont understand please help