Answer:
See explanation and image attached
Explanation:
A bond line structure refers to any structure of a covalent molecule wherein the covalent bonds present in the molecule are represented with a single line for each level of bond order.
The bond-line structure of CH3CH2O(CH2)2CH(CH3)2 has been shown in the image attached. We know that oxygen has a lone pair of electrons and this has been clearly shown also in the image attached.
Hydrogen + oxygen --> water
2,1g + 16,8g = x
x = 18,9g
I believe the most massive element that is naturally occurring on Earth is uranium (U), which has a nucleus of 92 protons