Answer:
All matter is made up of atoms, which are in turn made up of protons, neutrons and electrons. Atoms come together to form molecules, which are the building blocks for all types of matter
Answer:
Liquid water and ethanol are described as miscible because they <u>mutually dissolve each other in all proportions</u>.
Explanation:
Miscibility is defined as the property of two substances to mix each other in all proportions and make a homogenous mixture. This physical property is a reversible property and mainly depends upon the intermolecular interactions between the two substances.
Water: Water has a chemical formula H₂O, in which hydrogen atom is directly bonded to oxygen atom. Oxygen atom being more electronegative atom make the hydrogen partial negative and the oxygen itself becomes partial negative.
Ethanol: Ethanol has a chemical formula C₂H₅OH. In this molecule there is also the presence of O-H bond as that found in water and with the same partial negative charges.
Thus, the opposite partial charges of these molecules interact with each other and forms one of the strongest intermolecular bonds called as Hydrogen Bonds resulting in dissolution of each other in all proportions.
The reason responsible for the variation in atomic radii in group 3A,4A,5A,6A is increasing size of the nuclear charge.
As we move across the period in the periodic table, the size of the nuclear charge is increased because more protons are added but there is no increase in the number of shells.
As such, the outermost electrons experience greater attraction for the nucleus from left to right across the period.
This increased attraction causes the atoms to become smaller across the period.
Hence, across the period, the atomic radii of elements in groups 3A,4A,5A,6A decreases steadily.
Learn more: brainly.com/question/24621952
1. Tributary
2. Erosion
3. Where a river turns
Answer:
See Explanation
Explanation:
For SF6;
Since;
1.25 g of S corresponds to 4.44g of F
1 g of sulphur corresponds to 1 * 4.44/1.25 = 3.55
For SF4;
Since;
1.88 g of S corresponds to 4.44g of F
1 g of sulphur corresponds to 1 * 4.44/ 1.88 = 2.36
Hence;
Mass of oxygen per gram of sulphur in SF6/Mass of oxygen per gram of sulphur in SF4
=
3.55/2.36 = 1.5
Hence the law of multiple proportion is obeyed here.
