22 SEE ** AL A large number of organic compounds have been discovered and isolated from natural sources by the first quarter of the 19th century but till then, none of the organic compounds could be prepared in the laboratory. It was believed that organic compounds followed laws of formation different from inorganic compounds and that some vital force was necessary to produce the organic compounds. Synthesis of these organic compounds in the lab was impossible due to the absence of vital force, which only known to exist in the living organisms. In 1828, Friedrich Wöhler produced the compound urea, H2N-CO-NH2 in the laboratory. Why was the result of this experiment significant in the history of Organic chemistry? (5 marks) Write equations showing the synthesis of urea from ammonium cyanate. (3 marks)​

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

What is the relationship between wind and ocean waves? question 17 options: wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves. wind moving at higher speeds will transfer energy over a larger part of the ocean water, resulting in waves with a shorter wavelength. winds moving at higher speeds with cause water to move forward at faster rates, causing larger ocean waves. winds moving at higher speeds will affect deeper water, resulting in waves that move at a faster rate. how do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.