3 molecules. 1, A chain of 3 Upper H pairs single bonded across a backbone of 1 Upper H to the left, and Upper O and Upper H to the right. 2, a chain of 2 Upper H pairs single bonded, and an Upper H pair single bonded with Upper O across a backbone of 2 Upper H single bonded. 3, a chain of 3 Upper H pairs single bonded across a backbone of 2 Upper H single bonded with 1 Upper O. List the number of each atom in the formulas above:

H

O

C

sorry idk the answer well to you i have a explaination

explanation: a formula which shows the arrangement of atoms in the molecule of a compound

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i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

i think it is true since you can test the answer and can use observations to complete it.