Select the correct sentences on the image. Matthew throws a ball straight up into the air. It rises for a period of time and then begins to drop. At which points in the ball's journey will
gravity be the greatest force acting on the ball?

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Apparently, I did 2nd and 3rd image and it said I didn’t select all the correct images.

The ph of carrots are 5.0 how it is classified a. acidic b. basic c. indicator d. neutral

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)