Question

1. serena mixed two samples together: a gray solid that smells like flowers and a gray solid that smells like bleach. she analyzed the results and found two ending substances. one of the ending substances was a white solid. this ending substance is made up of the repeating group of atoms shown above. which of the diagrams to the left shows the repeating groups of atoms that make up the samples serena mixed together?

(a) diagram a
(b) diagram b
(c) diagram c
(d) diagram d

Explanation:

To solve this, we analyze the chemical reaction (mixing two solids) and the resulting substance's atomic groups. We need to check which diagram's samples (Sample 1 and Sample 2) can combine to form the ending substance's atomic group. Diagram B has Sample 1 (purple - blue) and Sample 2 (orange - blue), which can react to form a new substance with the required atomic composition (matching the ending substance's analysis). Other diagrams either repeat the same sample (A) or have mismatched atom combinations (C, D).

Answer:

b. Diagram B