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Chemistry

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Breanne Watsica

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Cards in this guide (19)
Why are aircraft fuel tanks designed to be located in the wing

To utilize the wing space for the fuel,

What is the molality of .630g of NaCl dissolved in 525g of water

0.630 g NaCl x (1 mol NaCl/58.44 g NaCl) = 0.0108 mol NaCl

525 g H2O x (1 kg/1000g) = 0.525 kg H2O

0.0108 mol NaCl/0.525 kg H2O = 0.0206 molality

What is R in the ideal gas law equation

the ideal gas constant

D:

What would heating a sealed glass jar do

Increase the pressure of the gas inside

What relationship does Charles's law describe

The relationship between temperature and volume

What would cause the pressure of a gas to increase

An increase in temperature or a decrease in volume would call the pressure to increase.

Apex- increasing the number of gas particles

Which intermolecular force would affect the boiling point the least

Van der Waals forces

What force is activated because of the mass of the airplane and works to pull an airplane to the ground

Gravity

Which of these best describes a flight that is approaching the speed of sound

more drag is created because the air molecules are not moving out of the way of the airplane

What is a challenge that the engineer of a high-altitude airplane would need to consider

The airplane may succumb to the power of gravity as lift decreases at higher altitudes.

What does Dalton's Law of Partial Pressures say

The total pressure of a gas mixture is the sum of the individual pressures.

A concentration unit expressed in units of moles of solute per kilogram of solvent

This is called molality.

Which molecular solid would have the highest melting point

A solid that has hydrogen bonding would melt the easiest.

If the air in a carbon of milk was allowed to warm up what would happen to it

It's volume would increase

What is a homogeneous mixture equivalent to

A homogeneous mixture has only one phase.

What will result from increasing the temperature of gas

Increasing the temperature of gas the volume increase.

What is the molality of a solution that has 4 mol of KCl in 0.800 kg of water A.

The molality is 5.

What is used to help water wash way greasy dirt

Detergents help water wash way greasy dirt.

Which of the following is an electrolyte solution

The answer is "Ions in water" on Apex

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