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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.

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apologiabiology

times 400
2408 times 10²³
2.408 times 10³ times 10²³
2.408 times 10²⁶
2 decimal places
2.41 times 10²⁶

There are 2.40e+26 number of atoms in 400 grams of hydrogen.

Number of atom in 1 gram of hydrogen = 6.02 x 10^23
Number of atom in 400 gram of hydrogen to be determine.

What is atom?

Atom is smallest unit of matter.

Here,
1 gram = 6.02 x 10^23 atoms
Multiply both side by 400.
400 gram = 400 x 6.02 x 10^23
400 gram = 2.40 X 10^26
400 gram = 2.40e+26

Thus, there are 2.40e+26 number of atoms in 400 grams of hydrogen.

Learn more about atom here:
https://brainly.com/question/1566330


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