What are the products of burning fuel

1 message Which process results in the increase in entropy of the universe? the cooling of a hot cup of coffee in room temperatu

andreyandreev [35.5K]

Answer:

Melting of snow

Evaporation of water from desk

Explanation:

Processes that increase the entropy of the universe are those processes that have an increased disorderliness. We should note that there are three principal states of matter which are the liquid, gas and solid. The gaseous state is the most disorderly while the solid is the least disorderly.

Now. We can see that the cooling of a hot cup of coffee is a process that needs or leads to a loss in temperature which obviously decreases disorderliness of the universe.

The melting of snow however is a process that leads to an increase in the disorderliness of the universe. It entails moving from the solid state to the liquid state. It tends to move to a more disordered state indicating an increase in the entropy of the universe.

The evaporation of water from the desk is quite similar to that above. Hence since we are moving from the liquid to the gaseous state via evaporation, we can state that the entropy of the universe has increased since we have moved from a state with a lesser degree of disorderliness to a state that is more disordered I.e from liquid to gaseous state.

3 0

2 years ago

A 6.165 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 10.27 grams of CO2 and 3

e-lub [12.9K]

Answer:

Explanation:

mass of carbon in 10.27 g of CO₂ = 12 x 10.27 / 44 = 2.80 g

mass of hydrogen ( H ) in 3.363 g of H₂O = 2 x 3.363 / 18

= .373 g

These masses would have come from the sample of 6.165 g .

Rest of 6.165 g of sample is oxygen .

So oxygen in the sample = 6.165 - ( 2.8 + .373 ) = 2.992 g

Ratio of C , H , O in the sample

2.8 : .373 : 2.992

C: H : O : : 2.8 : .373 : 2.992

Ratio of moles

C: H : O : : 2.8/12 : .373/1 : 2.992 / 16

C: H : O : : .2333 : .373 : .187

C: H : O : : .2333/.187 : .373/.187 : .187/.187

C: H : O : : 1.247 : 1.99 : 1

C: H : O : : 5 : 8 : 4 ( after multiplying by 4 )

Hence empirical formula

C₅H₈O₄

Molecular formula ( C₅H₈O₄ )n

n ( 5 x 12 + 8 x 1 + 4 x 16 ) = 132

n x ( 60 + 8 + 64 ) = 132

n = 1

Molecular formula = C₅H₈O₄.

3 0

2 years ago

What types of predictions can be made using the Periodic Table?

Andrej [43]

Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties. Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or periods, and because of the periodic nature of the elements.

8 0

3 years ago

a gas mixture is exerting a pressure of 1.04 atm inside a sealed container. The gas was found to be a mixture of carbon dioxide

qwelly [4]

Answer:

Partial pressure of Nitrogen = 0.6032 atm

Explanation:

According to Dalton's law of partial pressure, at constant temperature, the total pressure exerted by a mixture of gases that do not react with one another is a sum of the partial pressures of the individual gases. And the partial pressure of each gas is proportional to their percentage composition. The partial pressure of each as is given as

Partial Pressure = (Percentage composition) × (Total pressure)

In this question, a gas mixture of Carbon dioxide and Nitrogen exerts a total pressure of 1.04 atm

The mixture contains 42% CO₂, meaning it contains 100-42 = 58% of Nitrogen.

Partial Pressure of Nitrogen = 0.58 × 1.04 = 0.6032 atm

Hope this Helps!!!

5 0

2 years ago

How many moles of S2O8 2– react for every mole of S2O3 2– that reacts? Consider the balanced chemical equations for reactions 1

rewona [7]

For 1 mole of S₂O₃²⁻ 0.5 mole of S₂O₈²⁻ will be used.

<h3>What is a balanced Reaction ?</h3>

A reaction in which the number of atoms in reactants is equal to the number of atoms in the products is called a balanced reaction.

The reaction given in the question is

S₂O₈²⁻ + 2I⁻ ⇄ 2SO₄²⁻ + I₂

I₂ + 2S₂O₃²⁻ ⇄ 2I⁻ + S₄O₆²⁻

Adding the equation will give balance equation

S₂O₈²⁻ + 2I⁻ + 2S₂O₃²⁻ ⇄ 2SO₄²⁻ + 2I⁻ + S₄O₆²⁻

So x moles of S₂O₈²⁻ require 2x of S₂O₃²⁻

for 1 mole of S₂O₃²⁻ 0.5 mole of S₂O₈²⁻ will be used.

To know more about Balanced Reaction

brainly.com/question/14280002

#SPJ1

7 0

2 years ago