Answer:
(a) when both the liquid are mixed, they become completely miscible as the intermolecular forces between them are equal to the intra molecular forces
(b) since the magnitude of intermolecular force = intra molecular forces, Delta H solution=0
(c) Delta H solute = positive
Delta H solvent = positive
Delta H mix = negative
Explanation:
You have a. 3, b. 2, e. 6, f. 3, i. 1
Answer:an article or substance that is manufactured or refined for sale.
"food products"
2.
a thing or person that is the result of an action or process.
"her perpetual suntan was the product of a solarium"
Explanation:
The answer is: D.unstable nuclei emitting high-energy particles as they formed more stable compositions.
Those high-energy particles are alpha particles
, beta particles
, gamma radiation.
For example, the decay chain of ²³⁸U is called the uranium series.
Decay start with U-238 and ends with Pb-206. There are several alpha and beta minus decays.
Antoine Henri Becquerel (1852 – 1908) was a French physicist and the first person to discover evidence of radioactivity.
Becquerel wrapped fluorescing crystal (uranium salt potassium uranyl sulfate) in a cloth, along with the photographic plate and a copper Maltese cross.
Several days later, he discovered that a image of the cross appeared on the plate.
The uranium salt was emitting radiation.
Because of this discovery, Becquerel won a Nobel Prize for Physics in 1903, which he shared with Marie Curie and Pierre Curie.
Answer: D) 1.00 g
Explanation:
According to the Avogadro's law, the volume of gas is directly proportional to the number of moles of gas at same pressure and temperature. That means,
or,
where,
= initial volume of gas = 2.00 L
= final volume of gas = 3.00 L
= initial moles of gas =
= final moles of gas = ?
Now we put all the given values in this formula, we get
Mass of helium =
Thus mass of helium added = (3.00-2.00) g = 1.00 g
