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Chemistry

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Benny Wuckert

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Cards in this guide (15)
Can you use petrol as a fuel in rocket engine

Rocket fuel contains oxygen, which is not found in space. A rocket in space could theoretically work in space if it were to carry its own oxygen, but other fuels such as hydrogen are more efficient.

What kind of changes contribute to spontaneity

An increase in entropy.

What is true of the enthalpy value of an intermediate reaction

It is multiplied by 2 if the intermediate reaction is multiplied by 2

What is the purpose of the flame that is lit below a hot air balloon

To increase enthalpy.
the burner uses flames to heat the air so the balloon will rise

What is the value for G at 300 K if H 27 kJmol and S 0.09 kJmolK

G = 0 kJ/mol

What does S0 mean

the system has become more random

Which design shape will generate the most thrust

A tree with branches.

What describes the difference between the mechanics of airplane flight and rocket flight

The difference is that you are a mamaguevo y yo se lo meto a tu hermana.

What is the pH of a solution with H 2.310-6

The pH is 5,6.

Which must be overcome by a rockets thrust

The payload's weight, and the weight of the rocket itself.

What chemical reaction describes where energy is absorbed

You think probable to an endothermic chemical reaction.

What happens when a glass of water is set out in the sun until the water evaporates

Water is transformed in vapors.

How is the H fusion used to calculate the energy released when a mass of liquid freezes

grams liquid x mol/g x H fusion

What of the following statements defines a republican government

We can't answer because we don't know the statements you were given.

What field of study includes several laws that describe how energy transfer works

Thermodynamics.

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