C
Explanation :
Alkene decolorizes water so it has a C=C
Explanation:
The boiling point of a substance is 293°C.
The boiling point is the temperature at which the vapor pressure of a liquid becomes equal to the atmospheric pressure.
So, at the boiling point:
The vapor pressure =atmospheric pressure = 1 atm.
To get the vapor pressure of the substance at 220°C is definitely less than 1 atm.
Since, as the temperature increases, the vapor pressure of the liquid increases.
Answer:
Newton's first law is a object at rest stays at rest unless acted by and outside force
Explanation:
say there is a ball sitting still it is at rest well say a kid comes over and kicks the ball the kid is the outside force that puts the ball in motion so the ball goes from sitting still to moving by the outside force also known as the kid
Answer: Positive, positive
Explanation:
Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.
is positive when randomness increases and is negative when randomness decreases.
Exothermic reactions are defined as the reactions in which energy is released in the form of heat and 
for the reaction comes out to be negative.
Endothermic reactions are defined as the reactions in which energy is absorbed in the form of heat and for the reaction comes out to be positive.
For a cold pack, the energy has to be absorbed for the dissolution of ammonium nitrate in water so that the surroundings feel cold.Thus as energy is absorbed, for the reaction comes out to be positive.
The solid form of ammonium nitrate is getting converted to ions and thus entropy increases and thus for the reaction comes out to be positive.
Answer:
answer: Krypton
Explanation:
In bromine molecule bromine atom achieved Krypton electron configuration because before forming bromine molecule it had only 35 electron but after formaion molecule one elctron is shared by other bromine atom and after that bromine has 36 elecron which resembles with Krypton atomic number hence electronic configuration also achieved is same as Krypton.
