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Ghella [55]
3 years ago
7

For each reaction, determine whether it is an example of combustion or not.

Chemistry
1 answer:
xz_007 [3.2K]3 years ago
7 0

Answer:

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

General Formulas and Concepts:

<u>Chemistry - Reactions</u>

  • Synthesis Reactions: A + B → AB
  • Decomposition Reactions: AB → A + B
  • Single-Replacement Reactions: A + BC → AB + C
  • Double-Replacement Reactions: AB + CD → AD + BC
  • Combustion Reactions: CₓHₙ + O₂ → CO₂ + H₂O

Explanation:

<u>Step 1: Define</u>

RxN A:   C + O₂ → CO₂

RxN B:   CO₂ + 4H₂ → CH₄ + 2H₂O

RxN C:   2N₂O₅ → 4NO₂ + O₂

RxN D:   2NO + O₂ → 2NO₂

RxN E:   2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

<u>Step 2: Identify</u>

RxN A:   Synthesis Reaction

RxN B:   Half of an Equilibrium equation for Combustion

RxN C:   Decomposition Reaction

RxN D:   Synthesis Reaction

RxN E:   Combustion Reaction

Only reaction that is a combustion reaction is RxN E. Every other RxN is not a combustion reaction.

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Two plates slide past each other in opposite directions at a ____ boundary.
Kitty [74]

Answer: plate

Explanation: Plates grinding past each other in opposite directions create faults called transform faults. Powerful earthquakes often strike along these boundaries. The San Andreas Fault is a transform plate boundary that separates the North American Plate from the Pacific Plate.

4 0
3 years ago
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Which group of animals would be served best by the following adaptations? Large ears to dissipate heat. Kidneys adapted to check
ale4655 [162]
A.<span>animals that live in deserts </span>
4 0
3 years ago
Help me with this question please like right now
denis23 [38]

Using the gas laws, the volume of nitrogen produced is 6.6 L.

<h3>What is the product of a reaction?</h3>

We know that the product of a reaction is obtained from the balanced reaction equation. The reactants combine together to yield the products hence we have; N2 + 3H2 ----> 2NH3

We know that 1 mole of hydrogen occupies 22.4 L

x moles of hydrogen occupies 25500 L

x = 1 mole * 25500 L/ 22.4 L

x = 1138.4 moles

If 3 mole of hydrogen reacts with 1 mole of nitrogen

1138.4 moles  reacts with 1138.4 moles * 1 mole/ 3 moles = 379.5 moles

Mass of nitrogen = 379.5 moles * 28 g/mol = 10626 g

Now 3 moles of hydrogen produces 44.8 L of NH3

1138.4 moles  produces 1138.4 moles * 44.8 L/ 3 moles = 17000 L

Now;

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/P2T1

V2 = 1 * 17000 * 848/5.5 * 273

V2 =9601 L

2) 2NH4NNO3(s) ---> 4H2O(g) + 2N2(g) + O2(g)

Number of moles = 12g/ 80 g/mol = 0.15 moles

Now;

2 moles of NH4NNO3 produced 2 moles of nitrogen hence 0.15 moles of N2 was produced.

1 mole of N2 occupies 22.4 L

0.15 moles of N2 occupies 0.15 moles  *  22.4 L/1 mole = 3.36 L

P1 = 760 torr

V1 = 3.36 L

T1 = 273 K

P2 = 745 torr

T2 = 527 degrees or 800 K

V2 = ?

V2 =  P1V1T2/P2T1

V2 =  760 *  3.36 * 527/745 * 273

V2 = 6.6 L

Learn more about gas laws:brainly.com/question/12669509

#SPJ1

3 0
2 years ago
What is the mass, in grams, of 9.01 x 1024 molecules of methanol (CH, OH) ?
Zina [86]

Answer:

480.6 g

Explanation:

Given data:

Number of molecules of methanol = 9.01 ×10²⁴

Mass in gram = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

9.01 ×10²⁴molecules ×1 mol /6.022 × 10²³ molecules

1.5 ×10¹ mol

15 mol

Mass in gram:

Mass = number of moles × molar mass

Mass = 15 mol × 32.04 g/mol

Mass = 480.6 g

3 0
3 years ago
The chemical that acts as a catalyst in the photosynthesis process is
Marta_Voda [28]

Answer:

chlorophyll

Explanation:

The work of chlorophyll is to absorb light energy from sunlight and transfer it to other molecules used for a process of photosynthesis. This energy is utilized in synthesize carbohydrates using CO2. Further, it also doesn't use in a reaction of photosynthesis hence it acts as the catalyst in this reaction.

6 0
4 years ago
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