Athy online Mariya M
Spor Test
Science
HALF YEARLY EXAMINATIC
DESCRIPTIVE(PART B)
(S011475)
TOTAL MARKS
20.00
DATE
22-10 2020
DURATION(MINUTES)
0
TIMER
51:01
1 Hour 15 Minutes
Mark: 2
While playing in a park, a child was stung by a wasp. Some elders suggested applying the paste of baking soda and others suggested lema
Juice as the remedy which remedy do you think is appropriate and why?
1

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon