The tempertaure at which the pressure of the vapor of a liquid is equal to the external pressure acting on the surface of the liquid?

Answers

Answer 1

Answer:

Answer: Boiling point

Explanation:

Boiling point is the temperature where the vapor pressure of a liquid equals the pressure of the gas present above it.

The normal boiling point of a liquid is the temperature at which its vapor pressure is equal to one atmosphere.

Boiling point depends on the intermolecular forces present between the molecules. More are the intermolecular forces, lesser will be the vapor pressure and thus more heat will be supplied to make vapor pressure equal to the atmospheric pressure. Thus higher will be the boiling point.

Normal boiling point for water is $100^0C$ .

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How many atoms are in 3.50 moles of calcium (Ca)?

Answers

$1\ mole\ --\ 6.02*10^(23)atoms\n 3.5\ moles--x\n x=21.07*10^(23)\ atoms$

No. of atoms = no.of moles x avagadro's constant

= 3.50 x 6.022*10^23

= 21.077 x 10 ^23

The nucleus of an atom can have either a positive or negative charge

Answers

The statement is false. The nucleus of an atom can only have a positive charge. The nucleus is made up of protons and neutrons. Protons are positively charged particles while the neutrons do not have a charge. Therefore, the nucleus is positively charged.

The escape of gas through a small hole in a container

Answers

The escape of gas through a small hole in a container is called effusion. This phenomenon happens when the diameter of the hole is small enough compared to the mean free path of the gas particles. This is governed by Graham's Law which states that the rate of effusion is inversely proportional to the molecular weight of the gas.

Answer:effusion

Explanation:

2
How many molecules are in 2.47 moles of CC14? *

Answers

Answer:

1.49x10^24 molecules

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What is involved in redox reactions
A.the transfer of electrons between reactants
B.the bonding of ions to form chemical compounds
C.the addition of water to break down food macromolecules
D.the breaking down of water into hydrogen and oxygen atoms

Answers

Answer:

Explanation:

Redox reactions are comprised of two parts, a reduced half and an oxidized half, that always occur together. The reduced half gains electrons and the oxidation number decreases, while the oxidized half loses electrons and the oxidation number increases.

Answer:

Explanation:

What is the volume of the sample at stp?

Answers

At stp the volume is 22.4 L .

hope this helps!

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