A Scientist Quantifies Substance a in a Flask Where Chemical

Multiple Choice

A scientist quantifies substance A in a flask where chemical reactions are occurring.A plot of the amount of product as a function of time is a straight line with a slope of -0.8 mmol/second.The negative value of the slope indicates what?

A) The amount of substance A in the flask is decreasing over time.
B) The amount of substance A in the flask is increasing over time.
C) The amount of substance A in the flask remains constant over time.
D) None of the above