It is so bugging and once you erase the question marks it will not let you go back up to the top question mark to replace it with a number
Hi joseph tuttle,
Thank you for posting to our community. Are you using the chemical equation module to complete your assignment?
Sapling Learning > Writing Chemical Equations
If you are, and you're still having trouble, it might be a browser issue. Please note that we recommend Google Chrome but do not support Microsoft Edge.
All the best,
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