Question 7 (1 point) Retake question Given the molar masses in the table below, what is the percent composition of D in the compound D2E? Round to the nearest 0.01 and include both units and element. E G Element Molar Mass (g/mol) 12.53 43.23 2 Your Answer units Previous Page Next Page Page 7 of 15​

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

c. is the answer

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