Is it possible to weigh one molecule using a weights of different substances?

Will the number of molecules be the same in equal weoights of different substances?

The force of attraction between molecules of different substances is

If we want equal numbers of molecules of different substances, will it work to take equal weights those substances?

Write the uses of : Radioactive substances

What is meant by specific heat capacity? How will you prove experimentally that different substances have different specific heat capacities?

Answer in your own words : Will it be possible to use one and the same unit to measure physical quantities such as mass , weight , distance , velocity , temperature ?

Two containers are filled, each with a different gas. Two containers are at the same temperature. Suppose that the molecules weights of the two gases are M_(A) and M_(B) . Then the average momenta (in magnitude) of the molecules are related as

Write answer to the following question in your own words: Why is the weight of the same object different on different planets?

One mole of oxygen gas weighs_____

At what temperature will nitrogen molecules have same R.M.S. speed as oxygen molecules at 400 K (molecular weight of oxygen = 32, molecular weight of nitrogen = 28)