Answer:
False
Explanation:
False : It is better they are closer together
The RF ( retention factor ) is calculated with this formula
= distance travelled / distance travelled by solvent
And the larger the RF factor of a compound the less polar the compound ( i.e. it will not stick to the stationary phase ) hence it is better the RF values of the components to be closer
Answer : Not studied by many scientists.
Explanation : An emerging scientific idea should be something which is not commonly studied by most of the scientists. If it is found to be common with many scientific ideas then it may not be considered as emerging scientific idea. It has to be unique, different and innovative from rest of the ideas.
Answer:
108.9897 psi
Explanation:
Using Ideal gas equation for same mole of gas as
Given ,
Let V₁ = x units
The new volume increases by 4 % which means
V₂ = x + 0.04x = 1.04 x
P₁ = 100 psi
P₂ = ?
T₁ = 19 ºC
T₂ = 58 ºC
The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T₁ = (19 + 273.15) K = 292.15 K
T₂ = (58 + 273.15) K = 331.15 K
Using above equation as:
Solving for P₂ , we get:
<u>P₂ = 108.9897 psi</u>
In a chemical change, the molecules in the reactants interact to form new substances. In a physical change, like a state change or dissolving, no new substance is formed.
hope this helped
Answer:
gas vibrate and move freely at high speeds. liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place.
Explanation: