Carefully add HNO into the flask until the phenolphthalein begins to lose its color. Stop

adding HNO3 when the color change is permanent.

A. How much (HNO3) was required to cause the indicator to change color?

B. What can you say about the pH before and after the last drop of HNO3 was added?

Agas in a balloon at constant pressure has a volume of 160 ml at -125*c. what is its volume at 29.0*c?

98 ! and brainliest plz ! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line