Answer:
Atomic Oribal
Explanation:
There are four basic types of electron orbitals – s, p, d, and f. (Visual representations can be found in the tutorial above.) The s subshell is a spherical orbital which can contain up to two electrons. Each energy level has one s subshell.
We know that the particles in a matter have energy. They have kinetic energy, potential energy, chemical energy, electrical energy etc.
When we give heat to a matter it gains energy and there is an increase in its internal energy. Or we can say that particles in a matter have more energy at higher temperature than particles in a matter at low temperature
As ice is formed below zero degree celsius so the particles in ice must have lesser energy than water at higher temperature.
Thus true statement will be
The particles in boiling water have more energy than the particles in ice water do.
Answer:
in the fraction distillation method, two liquids such as benzene and toluene are produced from the mixture of benzene and toluene.
Explanation:
Fractional distillation is a technique used in the industries for the separation of two or more liquids from one another. In this process liquid is heated, those liquid has lower boiling point will change into vapor form and collect in the upper chamber of fractional distillation while the liquid having higher boiling point also evaporates after sometime and keep it in another chamber. In the mixture of benzene and toluene, the boiling point of benzene is lower so it evaporates earlier than toluene.
Answer:
2.78 x 10⁻² M
Explanation:
Step 1:
Data obtained from the question.
Volume = 225mL / 1000 = 0.225L
Mass of K₂SO₃•8H₂O = 1.89g
Molarity =..?
Step 2:
Determination of the number of mole of K₂SO₃•8H₂O
This is illustrated below:
Mass of K₂SO₃•8H₂O = 1.89g
Molar mass of K₂SO₃•8H₂O = (39x2) + 32 + (16x3) + 8[(2x1) + 16] = 78 + 32 + 48 + 8[18] = 302g/mol
Number of mole = Mass/Molar Mass
Number of mole of K₂SO₃•8H₂O = 1.89/302 = 6.26x10⁻² mole
Step 3:
Determination of the molarity.
Molarity = mole /Volume
Molarity = 6.26x10⁻² /0.225
Molarity = 2.78 x 10⁻² M
Therefore, the molarity of the solution is 2.78 x 10⁻² M
The answer is E. atomic number
