There are two hydrogen and two oxygen molecules because the number next to the atomic number is how many there are.
The first answer is B and the second answer is B
Answer:
Helium has atomic mass 4.002602.
So the answer to yr question is helium.
Answer:
Total 5 significant digits.
Explanation:
Significant digits are the numbers that give a meaningful contribution. For example, digit 013 has the 2 significant digits and zero is not a significant digit because digits 1 and 3 give meaningful contribution but digit zero does not value meaningful contribution. Similarly, the 89015 has a total of 5 significant digits and these digits are the 8, 9, 0, 1, and 5.
