Join IDNLearn.com and start getting the answers you've been searching for. Our Q&A platform offers detailed and trustworthy answers to ensure you have the information you need.
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