# what mass of natural gas (ch4) must you burn to emit 267 kj of heat?

5.36 g.

5-6 g.

## What mass of natural gas CH4 must you burn to emit?

The mass of CH4 needed is 5.36 g.

## What mass of methane CH4 must be burned to release KJ of heat?

According to the given thermochemical equation, 1 mol of methane (CH4) ( C H 4 ) is burned during one mol of reaction. The molar mass of methane is 16.04 g/mol. So, the mass of 1 mol of methane is 16.04 g. So, 4.81 g of methane must be burned.

## What is produced when CH4 is burned?

When methane (CH4) burns, it reacts with oxygen gas to produce carbon dioxide and water.

Methane

16.04 g/mol

## What is the mass of C’s that must burn in this way to release 275 kJ of heat?

What is the mass of C’s that must burn in this way to release 275 kJ of heat? The mass of C(s) needed to release 275 kJ of heat is 8.4 g.

44.01 g/mol

## What will the products be when CH4 burns in oxygen gas?

Methane, CH4, burns in oxygen gas to form water and carbon dioxide.

## What type of reaction is CH4 O2?

combustion
The combustion of methane or octane is exothermic; it releases energy. CH4 + 2 O2 → CO2 + 2 H2O + energy The energies of the products are lower than the energiies of the reactants.

## What is CH4 in chemistry?

Methane (CH4)

Methane is a colorless, odorless, flammable gas that is the simplest hydrocarbon and is the major constituent of natural gas. … Methane is present in the Earth’s atmosphere at low concentrations and acts as a greenhouse gas.

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## Which statement is correct about CH4?

Option 2 is correct. CH4 is the chemical formula for methane. It is a symmetrical molecule which shows tetrahedral geometry. It is also an overall non polar molecule.

## What type of bonding is CH4?

covalent bonds
Methane, CH4, is a covalent compound with exactly 5 atoms that are linked by covalent bonds. We draw this covalent bonding as a Lewis structure (see diagram). The lines, or sticks, as we say, represent the covalent bonds. There are four bonds from a central carbon (C) linking or bonding it to four hydrogen atoms (H).

## What is the standard enthalpy of the reaction CH4 g2 o2 g2 CO2 g 2H2O L <UNK>?

Limitation of using average bond enthalpies We earlier calculated using average bond enthalpies that for the reaction CH4 + 2O2 → CO2 + 2H2O ΔH = -708 kJmol-1. The published value for ΔcHΘ for this reaction is -890 kJmol-1.

## How do I calculate enthalpy?

Use the formula ∆H = m x s x ∆T to solve.

Once you have m, the mass of your reactants, s, the specific heat of your product, and ∆T, the temperature change from your reaction, you are prepared to find the enthalpy of reaction. Simply plug your values into the formula ∆H = m x s x ∆T and multiply to solve.

## Which of the following processes is exothermic quizlet?

Which one of the following processes is exothermic? Condensation of a gas into a liquid. An exothermic process releases heat. Boiling a liquid, melting a solid and converting a solid into a gas all require energy be put into the system.

## How do I find molar mass?

The characteristic molar mass of an element is simply the atomic mass in g/mol. However, molar mass can also be calculated by multiplying the atomic mass in amu by the molar mass constant (1 g/mol). To calculate the molar mass of a compound with multiple atoms, sum all the atomic mass of the constituent atoms.

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159.69 g/mol

## What happens when you mix CH4 and O2?

1 molecule of methane in an interaction with 2 molecules of oxygen forms 1 molecule of carbon dioxide and 2 molecules of water. Natural gas is the purest gas for burning, which has a simple composition and does not release harmful chemicals into the air. …

## What is the product of burning oxygen?

Regardless of the type of hydrocarbon, combustion with oxygen produces 3 products: carbon dioxide, water and heat, as shown in the general reaction below.

## When methane CH4 burns it reacts with oxygen gas to produce carbon dioxide and water the unbalanced equation for this reaction is CH4 g )+ O2 G → CO2 g )+ H2O G?

The unbalanced equation for this reaction is CH4(g)+O2(g) → CO2(g)+H2O(g) This type of reaction is referred to as a complete combustion reaction. Solution: The unbalanced equation for this reaction is CH4(g)+O2(g)→CO2(g)+H2O(g); The balanced equation is CH4(g)+2O2(g)→CO2(g)+2H2O(g);

## What reaction is CH4 O2 –> CO2 H2O?

combustion reaction
The reaction is named a combustion reaction. When this reaction takes place, the result is carbon dioxide (CO2), water (H2O), and a great deal of energy. Burning methane releases only carbon dioxide and water.

## Is CH4 a reactant or product?

In this chemical reaction, the reactants are methane (CH4) and oxygen (O2), and the products are carbon dioxide (CO2) and water (H2O).

## What type of reaction is this CH4 2O2 → 2H2O CO2?

Incomplete combustion
CH4 + 2O2 → CO2 + 2H2O Incomplete combustion – carbon monoxide and water. Ex.

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## What is the 4 in CH4?

Methane
Methane (US: /ˈmɛθeɪn/, UK: /ˈmiːθeɪn/) is a chemical compound with the chemical formula CH4 (one atom of carbon and four atoms of hydrogen).

Methane.
Names
Chemical formula CH4
Molar mass 16.043 g·mol1
Appearance Colorless gas
Odor Odorless

## What is the formula of ethene?

Ethylene/Formula
Ethylene, or ethene, is an unsaturated hydrocarbon. It is a colorless gas. Its chemical formula is C2H4 where there is a double bond between the carbons.

## How many elements does CH4 have?

Methane is a compound containing two elements, carbon and hydrogen. It exists naturally as a molecule. Each methane molecule has a central carbon atom joined to and surrounded by four hydrogen atoms. The chemical formula of methane is CH₄.

## Is CH4 is spherical top molecule?

Examples of spherical tops are: methane (CH4), phosphorus tetramer (P4), carbon tetrachloride (CCl4), ammonium ion (NH4+), and uranium hexafluoride (UF6).

## Natural Gas Fire Pit

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