Increasing order of masses:
1. 0.1g atom of silver
2. 10^23 molecules of CO2 gas
3. 0.1 mole of H2SO4
4. 1 gram of carbon
5. 10^23 atoms of calcium

Explanation:

1. 0.1g atom of silver:
The atomic mass of silver (Ag) is 108u. Since we are given 0.1g of silver, we need to convert it to atomic mass.

To convert grams to atomic mass, we use the Avogadro's number, which states that 1 mole of any substance contains 6.022 x 10^23 particles. In this case, we have 0.1g of silver.

First, we calculate the number of moles:
Number of moles = Mass of substance / molar mass
Number of moles = 0.1g / 108g/mol = 0.0009259 mol

Since we are given 0.1g atom of silver, we can consider it as 0.0009259 mol of silver, as 1 atom of silver is equal to 1 mol of silver.

2. 10^23 molecules of CO2 gas:
We are given 10^23 molecules of carbon dioxide (CO2) gas. To find the mass, we need to know the molar mass of CO2.

The molar mass of CO2 is calculated by adding the atomic masses of carbon (C) and two oxygen (O) atoms.
Molar mass of CO2 = Atomic mass of C + (2 x Atomic mass of O)
Molar mass of CO2 = 12g/mol + (2 x 16g/mol) = 44g/mol

Now, we can calculate the mass of 10^23 molecules of CO2:
Number of moles = Number of molecules / Avogadro's number
Number of moles = 10^23 / (6.022 x 10^23) = 0.1654 mol

Mass = Number of moles x Molar mass
Mass = 0.1654 mol x 44g/mol = 7.2776g

3. 0.1 mole of H2SO4:
We are given 0.1 mole of sulfuric acid (H2SO4). To calculate the mass, we need to know the molar mass of H2SO4.

The molar mass of H2SO4 is calculated by adding the atomic masses of hydrogen (H), sulfur (S), and four oxygen (O) atoms.
Molar mass of H2SO4 = (2 x Atomic mass of H) + Atomic mass of S + (4 x Atomic mass of O)
Molar mass of H2SO4 = (2 x 1g/mol) + 32g/mol + (4 x 16g/mol) = 98g/mol

Now, we can calculate the mass of 0.1 mole of H2SO4:
Mass = Number of moles x Molar mass
Mass = 0.1 mol x 98g/mol = 9.8g

4. 1 gram of carbon:
We are given 1 gram of carbon. The