The given compound is 
Each formula unit of has 2 mol Potassium (K) atoms, 2 mol Chromium (Cr) atoms and 7 mol Oxygen (O) atoms.
Atomic weight of potassium is 39.0983 amu
Atomic weight of Chromium is 51.9961 amu
Atomic weight of Oxygen is 15.9994 amu.
Therefore the formula weight of 
= 294.1846 amu
Answer:
Chlorine is found abundantly in earth crust and ocean.
Explanation:
The elements of group 17 are called halogens. These are six elements Fluorine, Chlorine, Bromine, Iodine, Astatine. Chlorine is one of them.
it is greenish-yellow irritating gas.
its melting point is 172.2 K
its boiling point is 238.6 K
It is present in earth crust and ocean abundantly.
In ocean chlorine is found in the form of salt sodium chloride.
About 1.9% mass of sea water consist of chlorine ions.
In earth crust it is present in minerals such as carnallite and sylvite.
it is disinfectant and can kill the bacteria.
it is also used in manufacturing of paper, paints and textile industries.
It is also reported that chlorine can effect the respiratory system, immune system and heart.
Up to some extent it can also effect the organism living in water.
Answer:
The new volume will be
0.7 L
Explanation:
This is an example of Charles' law, sometimes called the temperature-volume law. It states that the volume of a gas is directly proportional to the Kelvin temperature, while pressure and amount are held constant.
The process is know as diffusion in which substances move from higher concentration to lower concentration
The characteristics of carbon compounds are they exist with different structures in which the atoms are arranged differently and it forms more compounds than other elements combined.
Explanation:
The carbon atom has atomic number 6 which represents the number of electrons. It is represented by C and it is a non- metal. It has 6 protons, 6 neutrons, and 6 electrons. They are smaller in size so that it can fit in to larger molecules.
It is the only element that can form different compounds because each carbon atoms can form four chemical bonds to other atoms.
The structure of carbon atom is represented with its atomic number 6. The first two electrons are present in inner shell and the remaining four are present in the second shell.
The carbon combines with oxygen, hydrogen, and nitrogen to form many molecules for cellular function. Carbon and hydrogen combine to form hydrocarbon chains and rings.
For example the structural formula for Methane (CH4)
