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Chemistry

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Alden Kling

Lvl 10
2y ago
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Cards in this guide (16)
Why are aircraft fuel tanks designed to be located in the wing

To utilize the wing space for the fuel,

Why does metal absorb heat

because it is a solid and it conducts heat very well its the chemical compound of it

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:

How does intermolecular forces of a substance determine the phase the substance is in

If intermolecular forces are stronger, the molecules in the substance are more attracted to each other, and therefore requires more energy to move. Since temperature represents average kinetic energy, and therefore the energy present for the substance to overcome intermolecular forces, substances with stronger intermolecular forces will require a higher temperature to, for instance, melt.

What relationship does Charles's law describe

The relationship between temperature and volume

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 does Dalton's Law of Partial Pressures say

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

What solid is very hard and has a very high melting point

Tin

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.

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.

Which of the following is an electrolyte solution

The answer is "Ions in water" on Apex

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