Hello
here is my first question
a silver ornament of mass 'm' gram is polished with gold equivalent to 1% of the mass of silver. compute the ratio of the number of atoms of gold and silver in the ornament

The ratio of the number of atoms of gold and silver in the ornament is 197 : 1080.

Explanation:

Let the mass of silver ornament be x.

Mass of gold polished on an ornament = 1% of x= 0.1 x

Moles of silver =

Number of atoms =

Where : = Avogadro number

Moles of gold =

Silver atoms =

Gold atoms =

The ratio of the number of atoms of gold and silver in the ornament:

= 197 : 1080

answer: they produce more slow than unicellular organisms.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.