Some Basic Conc...

The number of atoms present in 78 g of potassium is equal to the number of potassium ions present in .......... g of potassium chloride.

10.0 g of CaCO$$_3$$ on heating gave 4.4 g of CO$$_2$$ and 5.6 g of CaO. The observation is in agreement with the:

What is the percentage by weight of sulphuric acid if 13 g of $$ H_2SO_4$$ is dissolved to make 78 g of solution?

The w/W % of 25 g of calcuim hydroxide in 50 g of solvent is_____ %

Which pair has same percentage of carbon?

The first organic substance ever prepared in the laboratory from the inorganic compound is:

What is the mass of the solvent present in 200 g of 25% (w/W) calcium hydroxide solution?

The illustrations show a conservation-of-mass experiment. The solution in the beaker lost mass because

In a chemical reaction, $$100 g$$ baking soda mixture containing sodium bicarbonate and vinegar on heating gives $$43 g$$ of carbon dioxide gas. What mass of solid residue is left in food?

In the procedure shown above, a calcium chloride solution is mixed with a sodium sulfate solution to create the products shown. Which of the following is illustrated by this activity?