Tag: basic concepts of chemistry
Questions Related to basic concepts of chemistry
Gases react in a simple whole number ratio of volume
The relative atomic mass of $ Ne$ is $20.$ Its relative molecular mass is:
Among the following pairs of compounds, the one that illustrates the law of multiple proportions is:
The % composition of four hydrocarbons are as follows:
| (i) | (ii) | (iii) | (iv) | |
|---|---|---|---|---|
| %C | 75 | 80 | 85.7 | 91.3 |
| %H | 25 | 20 | 14.3 | 8.7 |
The laws of multiple proportion was proposed by :
The % of hydrogen in water and hydrogen peroxide is $11.2$ % and $5.94$ % respectively. This illustrates the law of:
The oxides of nitrogen contain 63.65%, 46.69% and 30.46% of nitrogen by weight, respectively. This data illustrates the law of:
The ratio between the different weights of oxygen in different compounds which combine with the same weight of nitrogen ($14$ parts) is $8:16:24:32:40$ or $1:2:3:4:5$.
This is simple whole number which supports the law of:
Different proportions of oxygen in the various oxides of nitrogen proves the law of:
0.75 mole of solid ‘$A _4$’ and 2 moles of gaseous $O _2$ are heated in a sealed vessel, completely using up the reactants and producing only one compound. It is found that when the temperature is reduced to the initial temperature, the contents of the vessel exhibit a pressure equal to half the original pressure. What conclusions can be drawn from these data the product of the reaction?