Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_21 (percent_of_mass VARCHAR, molweight__daltons_ VARCHAR)
### Question:
what is the percent of mass when the mol.weight (daltons) is 1e11?
### Answer:
SELECT percent_of_mass FROM table_name_21 WHERE molweight__daltons_ = "1e11"