There are 6.02 × 1023 atoms in 1 gram of hydrogen. how many atoms are there in 400 grams of hydrogen? write your answer in scientific notation. if necessary, round your answer to two decimal places. 2.41 × 10^26 2.41 × 10^23 2.41 × 10^20 24.08 × 10^25

This is one half of a simultaneous equation. Without the other half, the values are theoretically unsolvable.

With that said, with trial and error you can work this out. I came out with an answer of x=1, y=12.

This is not a good practice. It's time consuming to solve simultaneous questions like this. Make sure you use the other half of the equation in the future.

I hope this helps!