How many moles of MgO is formed?

Answers

Answer 1

The moles of MgO produced in the reaction of magnesium and oxygen are 2 moles.

Magnesium oxide is created during the burning of magnesium metal when it combines with airborne oxygen. A compound is a substance made up of atoms from various elements that are chemically linked to one another. This molecule is created by the chemical interaction between oxygen and magnesium.

In the balanced chemical reaction of magnesium and oxygen is                2 Mg + O₂ ⇒ 2 MgO.

Since values are not mentioned in the question, so we are considering 2 moles of magnesium and 1 mole of oxygen.

In terms of magnesium

2 moles of  Mg ⇒ 2 moles of MgO

In terms of oxygen

1 mole of O₂ ⇒ 2 moles of MgO

Hence, magnesium and oxygen in 2:1 moles react to form magnesium oxide.

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Related Questions

I have a bowling ball hanging from a chain in my room. What two forces are acting on the bowling
ball?

Answers

Answer:

Gravity and the chain is holding it up not sure what it is called. Also if you want free points go to my answers and look for a friday nigt funkin rp answer but anwer if you want to rp and if you know what it is

Explanation:

Answer:

Kinetic & Potential Energy

Explanation:

Kinetic Energy: Energy which a body possesses by virtue of being in motion.

Potential Energy: The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors

Hope this helps! Have a good day/or night!

P.S: Sorry if I'm wrong I tried my best. Best wishes!!!

how many moles of sodium phosphate are required to make 7.5 moles of sodium nitrate in 2Na3PO4+3Be(NO3)=6NanO3+Be3(PO4)2

Answers

Answer:

2.5 moles of sodium phosphate

Explanation:

3 Pb(NO3)2 + 2 Na3PO4 → Pb3(PO4)2 + 6 NaNO3

6 (moles in the reaction)- 7.5(moles  in the task)

2 (moles in the reaction)- x (moles in answer) ⇒6x = 2*7.5 ⇒ x = 15/6=2.5 (moles)

Which of the following bonds is classified as a polar bond?

A K-CI

B Br-Br

C Si-F

D S-O



WILL MARK BRAINLIST

Answers

Answer:

the answer is b

Explanation:

the answer is b

Compound of KCl has a polar bond as there is a electronegativity difference between potassium and chlorine atoms.

What is a compound?

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.

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How many moles are in 8.3 x 10^23 molecules of H2O?

Answers

Answer:You multiply avogadro's number to what you were given.

8.30x10^23 * 6. 0221409x10^23

=1.357*10^25

Explanation:

The theoretical yield of ammonia in a reaction is 865 g. What is the percent
yield if 657 g is produced?

A- 38.0%
B- 132%
C- 152%
D- 76%

Answers

Answer:

657/865= 75.9

D. 76%

Incorporate the meaning distance and displacement in the poem tagalog or English not necessarily the exact definition halimbawa: Itong mga dayuhan bago nakarating sa ating Bayan ay naglakbay ng ilang milya mula kanluran papuntang timog silangan

Answers

Answer:

Displacement.

Explanation:

The example i.e. these foreigners before arriving in our Town traveled several miles from west to southeast represents displacement not distance because in this example direction of the objects are given. We know that distance is a scalar quantity which is expressed from its magnitude only while on the other hand, displacement is a vector quantity which can be fully explained through magnitude as well as direction of the object. in this example, west to southeast represents direction of the objects so we can say that it refers to the displacement.

In a titration, what is the significance of the endpoint?

Answers

Answer:

Explanation:

the addition of an indicator to the analyte solution helps us to visually spot the equivalence point in an acid-base titration. Endpoint: refers to the point at which the indicator changes color in an acid-base titration.

Help pleaseee.... :(

Answers

Answer:

D= .7

C= 1.25

B= 2.2

A= 3.6

D = 0.7 / c = 1.25 / b = 2.2 / a = 3.6 please a Brainly

How many grams are there in 2.30x10^24 atoms of silver?

Answers

Answer:

107.8682 grams.

Explanation:

A student weighs an empty flask and stopper and finds the mass to be 53.256 g. She then adds about 5 mL of an unknown liquid and heats the flask in a boiling water bath at 98.8°C. After all the liquid is vaporized, she removes the flask from the bath, stoppers it, and lets it cool. After it is cool, she momen- tarily removes the stopper, then replaces it and weighs the flask and condensed vapor, obtaining a mass of 53.780 g. The volume of the flask is known to be 231.1 mL. The absolute atmospheric pressure in the laboratory that day is 728 mm Hg. a. What was the pressure of the vapor in the flask in atm?

Answers

Answer:

a. The pressure in the flask open to the atmosphere during the vaporization of the unknown liquid is equal to the prevailing atmospheric pressure equivalent to 0.957734 atm

Explanation:

The mass of the empty flask and stopper, m = 53.256 g

The volume of the unknown liquid she adds = 5 mL

The temperature of the water in which she heats up the flask = 98.8 °C = 371.95 K

The mass of the flask and the condensed vapor = 53.780 g

The volume of the flask, V = 231.1 mL

The atmospheric pressure, P = 728 mm Hg

a. We note that the student stoppers the flask after all the liquid has evaporated. Therefore, given that the flask was open to the atmospheric pressure as the liquid evaporates, the pressure of the vapor in the flask is equal to the prevailing atmospheric pressure, or 728 mmHg

Using a calculator, 728 mm Hg is equivalent to 0.957734 atm.

What does a positive H look like on a potential energy diagram?

Answers

Answer:

D because i did this last week and got it right.

A positive H indicates that the potential energy of products is higher than the potential energy of reactants.

What is a potential energy diagram?

A potential energy diagram is a diagram which shows the energy content of reactants and products as well as the energy changes that occur in a reaction.

A positive H in a reaction indicates that the reaction is endothermic and that products have a higher potential energy than reactants.

Therefore, a positive H indicates that tje potential energy of products is higher than the potential energy of reactants.

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The gas phase decomposition of phosphine at 120 °C

PH3(g)1/4 P4(g) + 3/2 H2(g)

is first order in PH3 with a rate constant of 1.80×10-2 s-1.

If the initial concentration of PH3 is 8.48×10-2 M, the concentration of PH3 will be 2.45×10-2 M after
s have passed.

Answers

Answer:

The decreasing in concentration occurs after 69.0s

Explanation:

A first order reaction follows the equation:

Ln [A] = -kt + ln[A]₀

Where [A] is the concentration of the reactant after time t

k is rate constant of the reaction

And [A]₀ is the initial concentration of the reactant

Replacing:

Ln 2.45x10⁻²M = -1.80x10⁻²s⁻¹*t + ln8.48x10⁻²

-3.709 = -1.80x10⁻²s⁻¹*t -2.467

-1.2416 = -1.80x10⁻²s⁻¹*t

69.0s = t

The decreasing in concentration occurs after 69.0s

What kind of rock can be broken
down to make sand?

Answers

Answer:

sandstone

Explanation:

Sandstone is a mineral rock made of small particles.

Yes what the other person said lol


A scientist is designing a device that will kill harmful cells in the human body using high-energy waves. Which type of wave would be most effective
А
X-rays would be the best choice because they have a long wavelength and a low frequency
accomplishing this goal?
B
Radio waves would be the best choice because they have a long wavelength and a low frequency
Gamma rays would be the best choice because they have a short wavelength and a high frequency
D
Infrared waves would be the best choice because they have a short wavelength and a high frequency
C2021 Illuminate Education Inc.
Tin
Type here to search
O
BH

Answers

Answer:

gamma rays

Explanation:

gamma Ray's have the highest frequency

How does the rate of a chemical reaction change if the concentration of both reactants increases 4 times?

2NO + O2 → 2 NO2

Answers

Answer: The rate will increase 32 times if the concentration of both reactants increases 4 times

Explanation:

Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.

For the reaction : [tex]2NO+O_2\rightarrow 2NO_2[/tex]  [tex]rate=k[NO]^2[O_2]^1[/tex]  

k= rate constant

order with respect to [tex]NO_2[/tex] = 2

order with respect to [tex]O_2[/tex] = 1

Thus on increasing the concentration of reactants 4 times :

[tex]rate'=k[4\times NO]^2[4\times O_2]^1[/tex]

[tex]rate'=k\times 8\times 4\times [NO]^2\times [O_2]^1[/tex]

[tex]rate'=32\times rate[/tex]

Thus rate will increase 32 times if the concentration of both reactants increases 4 times

Consider the equation and check all statements that apply to it: HA ↔ H+ + A−
(Select Apply Question)

A. It represents a strong acid buffer system.

B. It represents a weak acid buffer system.

C. Adding a strong acid would shift the equilibrium to the left

D. Adding a strong acid would shift the equilibrium to the right

Answers

Answer:

The answer is B & C

Explanation:

no.of elements in KMnO4​

Answers

Answer:

3 three

Explanation:

potassium (K), manganese (Mn), and oxygen (O).

Answer:

3 different elements (7 in total as there are 4 oxygens (The answer is either one of these))

Explanation:

3) What is the mass of 1 mole of selenium (Se)?

Answers

Answer:

78.96 grams

Explanation:

I looked it up and that's what I found

hope it helps

Answer:

78.96 g mol

Explanation:

78.96 g mol

in the period table the mass of Se is 78.96 g mol

Graduated cylinder‘s

Answers

The fourth option, the only thing changing is the container size. Not the mass or volume of the liquid

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical

equation:

(( H20-( H2+( 02

Answers

Answer:

[tex]2H_2O\rightarrow 2H_2+O_2[/tex]

Explanation:

Hello there!

In this case, for the reaction by which water is decomposed to molecular hydrogen and oxygen:

[tex]H_2O\rightarrow H_2+O_2[/tex]

It is necessary to perform the inspection balance process since there is a dissimilar number of atoms of oxygen on both sides; therefore, by putting a 2 on water we balance oxygen:

[tex]2H_2O\rightarrow H_2+O_2[/tex]

But now, there are four hydrogens on the left; therefore, we put a 2 on hydrogen to finally balance it:

[tex]2H_2O\rightarrow 2H_2+O_2[/tex]

And obviously, the coefficient in oxygen is an unwritten 1.

Best regards!

Which of the following shows the correct rearrangement of the the heat equation q = mCpΔT to solve for specific heat?

Answers

Answer:

c

Explanation:

Answer:

The Answer is the last one

Explanation:

PLEASE HELP AND DONT YOU DARE GIVE ME THE LINK

The fact that animals are the only kingdom that has muscle tissue demonstrates a contrast between which of the
following?
animals and humans
animals and protozoans
animals and other living things
animals and insects

Answers

Answer:

animals and other living things

Explanation:

All living organisms have been classified and grouped into a hierarchical system of classification. Kingdom is the highest level in this system comprising of 6 other levels. However, there are different kingdoms that harbors different organisms. The kingdoms are: animalia, plantae, protista, monera, fungi etc.

However, among other kingdom of organisms, organisms in the Kingdom Animalia are the only ones that possesses muscle tissues etc. This shows a contrast between animals and other living things.

Which of the following uses electrical energy?
A washing machine
The sun
A plant
A cat

Answers

Answer:

★ B. A washing machine.

Explanation:

What's Electrical energy?

Electrical energy is energy derived from electric potential energy or kinetic energy. When used loosely, electrical energy refers to energy that has been converted from electric potential energy.

Si Hecho Dos Cubos de Hielo En Un Vaso Con Agua Señalo Donde Quedo El Nivel Del Agua, Luego A Pasar El Tiempo Dejo Que Se Derritan Los Cubos De Hielo El Nivel Del Agua Aumenta??

Answers

Answer:

Ver explicacion

Explanation:

Técnicamente, cuando el hielo se derrite, ocupa aproximadamente el mismo volumen de agua que es igual a la masa de agua desplazada antes de que el hielo se derrita. Esto es posible solo cuando se ignora el cambio en la densidad del agua.

Sin embargo, si tenemos en cuenta el ligero cambio en la densidad del agua, se puede demostrar que el volumen de hielo es mayor que el del agua líquida porque el agua se expande cuando se congela.

Esto significa que el volumen de agua disminuye cuando el hielo se derrite.

What does this image represent?

A. Linear molecule with one domain
B. Linear molecule with two domains
C. Tetrahedral molecule with four domains
D. Trigonal planar molecule with three domains

Answers

Answer: A.

Explanation:

Answer:

A. Linear molecule with one domain.

Hope this helps! :)

Explanation:

The law of reflection states that the angle of incidence and the angle of reflection are always

Answers

Answer:

The law of reflection states that the angle of incidence and the angle of reflection are always equal.

PLEASE Answer asap! Which has the largest atomic radius?

A. Lithium
B. Helium
C. Oganesson
D. Francium?

Answers

Answer:

It's D. Francium

Explanation:

Atomic radii vary in a predictable way across the periodic table. The atomic radius increases from top to bottom in a group and decreases from left to right across a period. Thus, Helium is the smallest element, and Francium is the largest.

The answer is d to ur question

A solution has a hydroxide-ion concentration of 1.5 x 10^-5M. (a) What is the concentration of the hydronium ions in this solution? (b) What is the pH of this solution? (c) Is the solution acidic, basic, or neutral?

Answers

the answer is solution acidic !!

suppose that you measured out 3.50g of Na2SO4. how many moles would you have? (show work)​

Answers

Answer:

Na2SO4 is equal to 0.0070401642780093 mole.

Explanation:

Which of the following terms describes the area where the Himalaya Mountains formed?


A.)Convergent Boundary

B.)Transform Boundary

C.)Divergent Boundary

B.)Subduction Zone

Answers

Answer:

Convergent Boundary describes the area where himalayan mountains formed.

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