Teacher: In this task, you need to translate the given English sentence to Polish language.
Teacher: Now, understand the problem? If you are still confused, see the following example:
The Americans didnt even know
Solution: Amerykanie nawet nie wiedzieli
Reason: English sentence is properly converted into Polish sentence

Now, solve this instance: This tells us how many hydrogen molecules we have.
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Zobacz, to nam mówi, jaka jest masa wodoru w próbce.