2. Solve the following numerical problems involving data analysis: (a) 1.3 g of zinc powder is mixed with excess
dilute nitric acid. 480 cm of hydrogen gas is
collected in 10 s. Calculate the average rate
of reaction for the whole reaction in cm3s-
Time (s)
(b) The volume of oxygen gas released from
a mixture of hydrogen peroxide solution
0
and manganese(IV) oxide powder is
30
recorded at intervals of 30 seconds for
270 seconds in Table 4.1.
60
() Based on Table 4.1, draw a graph of
90
volume of oxygen gas against time.
(ii) Calculate the average rate of reaction:
120
• for the first 2 minutes
150
• in the second minute
• for the whole reaction
180
(ii) Calculate the rate of reaction:
210
• at the 60th second
240
• at the 150th second
• at the 240th second
270
28.50
33.00
36.50
39.00
40.00
40.00
40.00​

Juju.01) 5 geologic events a group of students designed an experiment in an ice rink to represent the solar system. the steps of the experiment are listed below. 5: geologic events 1. choose a student to represent the sun. the planets are represented by two tennis balls. 2. ask the student to hold the tennis balls in each palm and spin on the ice with arms stretched out. 3. ask the student to draw in the arms after about 10 spins. 4. observe the student's arms rotate faster when they are closer to the body. 05 geologic events enors) the experiment most likely demonstrates that (2 points) 07 discussion-based sessment/module planets exert gravitational force on the sun the sun exerts gravitational force on the planets 3.07 discussion-based ssessment speed of a planet depends on its distance from the sun new version available! (3.0.119) get it now submit 18.07: module exam description