Answer:
21
Explanation:
Let us count the number of individual atoms for Na2S2O3 (the compound name):
Na: 2
S: 2
O: 3
This brings us to a total of 7 atoms for one molecule of sodium thiosulfate. For three of these compounds, we get 3*7=21
Plants and animals RE a carbon source during respiration. they take in Oxygen and give out Carbon (IV) oxide as a by product. Combustion of fossil fuels is also source of carbon (IV) Oxide.
Formation of fossils from dead plants and animals is a carbon sink. photosynthesis is also a carbon sink as plants take in carbon (IV) Oxide that is used to make food.
• The bond that exist between the CCl4 compound ,forms a covalent bond ,, this can be illustrated in the diagram below:
• We can see that it contains four non-polar covalent bond between carbon and chloride
Boil the water to get remove the salt and then use filter paper to remove the microorganisms