What are the half equations that exist in thus reaction: 4Na + O2 --->2Na2O .

Answers

Answer 1

Answer: 4Na +2e- ---->2Na2
O2 +2e- ------>2O

Related Questions

Which term describes the materials magma is made of?A. ExtrusiveB. IntrusiveC. MoltenD. Cooled
Carbonic acid dissolves limestone and other rocks. This is an example of _____. chemical errosion
What is the change in heat energy when 132g of copper at 32.2°C is raised to 45.0oC? The specific heat of copper is 0.385 J/g °C.
How many molecules are there in 79g of Fe2O3? how many atoms is thi
Which of the following general statements about Earth's atmosphere is not true? a.Atmospheric scattering of light explains why our daytime sky is bright and blue. b.The nitrogen and oxygen in Earth's atmosphere keep the surface pleasantly warm. c.Even in low-Earth orbit, some atmospheric gas is still present. d.Atmospheric pressure decreases with altitude.

Given the reaction:Mg(s) + 2 AgNO3(aq)--> Mg(NO3)2(aq) + 2 Ag(s)
Which type of reaction is represented?
(1) single replacement (3) synthesis
(2) double replacement (4) decomposition

Answers

Answer: (1) single replacement

Explanation:

A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution.Thus magnesium can easily lose electrons as compared to silver and result in the formation of magnesium nitrate and silver.

$Mg(s)+2AgNO_3(aq)\rightarrow Mg(NO_3)_2(aq)+2Ag(s)$

Double displacement is a chemical reaction in which ion exchange takes place.

Synthesis reaction is a chemical reaction in which two reactants combine to give a single product.

Decomposition is a chemical reaction in which one substance decompose to give two or more than two products.

reaction: Mg(s) + 2 AgNO3(aq) → Mg(NO3)2(aq) + 2 Ag(s)
Which type of reaction is represented?

double replacement

double replacement a bimolecular process involving the exchange of bonds between the two reacting chemical species, which
results in the creation of products with
similar or identical bonding affiliations.
To illustrate, consider two chemical species, AB and CD, which react to give AD and CB:

AB + CD → AD + CB

neon is a noble gases a very stable it does not readily combined with other elements which category does neon belong to

Answers

This is a nonmetal because gases cannot be metals

What is your zodiac sign? i’m a sagittarius

Answers

Answer: ima gemini :3

Explanation:

Answer:

OMG same im Dec 18

Explanation:

When a liquid absorbs energy and changes to a gas, what takes place?a. condensation,
b. sublimation,
c. infiltration,
d. evaporation

Answers

D, Evaporation. Like the water cycle..

Which group tends to have the highest ionization energy? The lowest?a) Halogens; Alkaline earth metals
b) Alkali metals; Noble gases
c) Noble gases; Alkali metals

Answers

Final answer:

The group with the highest ionization energy is(option c) noble gases due to their full electron shell, making it difficult to remove an electron. The group with the lowest ionization energy is(option c) alkali metals because they have only one electron in their outermost shell, which can be easily removed.

Explanation:

The answer to the question is (c) Noble gases; Alkali metals. Ionization energy is the energy required to remove an electron from an atom or ion. A higher ionization energy means it is harder to remove an electron.

Noble gases have the highest ionization energies because they have a full electron shell, so they do not readily give up an electron. On the other hand, alkali metals have the lowest ionization energy, because they have only one electron in their outer shell, which is relatively easy to remove.

Learn more about Ionization Energy here:

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The heat of combustion of propane, C3H8, is 2220 kJ/mol. The specific heat of copper is 0.385 J/g°C. How many grams of propane must be burned to raise the temperature of a 10.0 kg block of copper from 25.0°C to 65.0°C, assuming none of the heat is lost to the surroundings?

Answers

The heat of combustion ( $\Delta$ Hc0) is the amount of energy released as heat when a compound completely burns with oxygen under standard conditions.

3.05988g. grams of propane must be burned to raise the temperature of a 10.0 kg block of copper from 25.0°C to 65.0°C.

What is meant by heat of combustion?

The heat of combustion ( $\Delta$ Hc0) is the amount of energy released as heat when a compound completely burns with oxygen under standard conditions. In most cases, a hydrocarbon reacts with oxygen to produce carbon dioxide, water, and heat.
The heat of combustion of a substance is the amount of energy released when a specific amount (e.g., 1 mol, 1g, 1 L) of the substance completely burns in oxygen. The heat of combustion is typically measured at 298K (25 C) and 101.3kPa.
The energy released when a substance X completely burns with an excess of oxygen under standard conditions (25°C and 1 bar). It is the inverse of the enthalpy change for the combustion reaction in thermodynamic terms.

q=m*c*(change of T)

q=10000g(0.385J/g*c)*(65.0C-25.0C)or (338.2 K-298.2K)

q=154000J

154000J*(1 mol/2220 KJ)=69.36936 x $10 ^-3$ mol