1 mole = 6.022×10^23 atoms. 1 water molecule = 2 Hydrogen atoms + 1 oxygen atom. So, 1 mole H2O = 1.2044×10^24 hydrogen atoms. Therefore 2 mole H2O will have 2.4088×10^24 hydrogen atoms.

8 0

3 years ago

What element has 2 electrons in its outermost energy level and is in the 2nd period on periodic table?

Olegator [25]

Be-beryllium have 2 electrons and it is in the 2 nd period

4 0

3 years ago

Which are characteristics of a prokaryotic cell? Select three options. contains DNA lacks DNA contains ribosomes lacks ribosomes

lara [203]

Contains DNA, contains ribosomes, lacks a nucleus

7 0

3 years ago

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