<span>Each liquid boils only at a certain temperature, which is called its </span><span>Boiling Point
Water for example has a boiling point of 100 degrees Celsius.</span>
Answer:
The correct answer is C 112
Explanation:
I just took the test good luck :)
The third one is the answer
Answer: Option (a) is the correct answer.
Explanation:
Sodium bromide (NaBr) is an ionic salt as it is formed by transfer of an electron from sodium to bromine atom.
Whereas 
, HCN, 
and 
are all covalent compounds. And, all of them exists as a gas at room temperature.
Also according to rate of diffusion law, rate of diffusion is inversely proportional to square root of molecular weight of gas.
Mathematically, Rate of diffusion = 
Out of the given options NaBr has the highest molecular weight which is 102.894 g/mol.
Thus, we can conclude that NaBr is most likely not a gas at room temperature.
18: <u>FALSE</u> The physical properties of metals include <u>shininess</u>, malleability, ductility, and conductivity.
19: <u>FALSE</u> Neutrons are the particles in an atom that have a <u>neutral charge</u>. They aren't positive like protons. They aren't negative like electrons.
20: <u>TRUE </u>Dmitri Ivanovich Mendeleev was a Russian chemist and inventor. He is best remembered for formulating the Periodic Law and creating a farsighted version of the periodic table of elements. He is also known as the "<u>father of the periodic table"</u>
