The pressure of a sample of a gas is measured in an open-end manometer containing mercury. The mercury level in the open arm is 12.5 cm below the level in the other arm. If the atmospheric pressure is 760.0 mm Hg, what is the pressure of the gas? QUESTION 1 O A 125 mm Hg B. 635 mm Hg OC885 mm Hg O D.760.0 mm Hg

Can you show us how to do number 8. ? Please see the attached pic.This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

C-lab Answer the following questions. You may upload a handwritten file if you like, as long as it is legible. Part A: Figure numbers refer to figures in the lab procedures. Do the calculations in the units given. 1. Very briefly explain how a photogate works. 2. How far would you go if you traveled at a speed of 30 miles per hour for 3 hours? 3. What acceleration would be needed to travel the same distance in the same time as in question 2 when starting from rest? What would be your final speed? 4. Refer to Figure 3. Given a track length of 90 cm and a height difference of 18 cm, what is sin 0 5. Draw the force diagram for an object on an inclined plane (see Figure 2 in the lab manual). Attach the diagram in question 2 below. What would be the acceleration given the inclination from question 4 and g = 9.8 m/s? Part B: Attach the free body diagram from question 5 above. O 8:31 acer page up page dn & backspace delete 5 8 enter

What is green chemistry? Choose the BEST answer. O Chemistry that uses only recycled chemicals. O Chemistry that makes something green in color. O Chemistry that comes from plants or uses plant materials. O Chemistry that uses non-toxic, non-harmful chemicals.