Urea (ch4n2o) is a common fertilizer that can be synthesized by the reaction of ammonia (nh3) with carbon dioxide as follows: 2nh3(aq)+co2(aq)→ch4n2o(aq)+h2o(l) in an industrial synthesis of urea, a chemist combines 133. 0 kg of ammonia with 211. 4 kg of carbon dioxide and obtains 173. 0 kg of urea.

Assessment includes a. interviews, recorded conversations, videos, frequency counts, and time samples. b. formal standardized tests and developmental screening tools. c. various types of documented observations, documentation of child work, checklists, rating scales, and standardized tests. d. anecdotal notes, narratives or daily records, daily health checks, and teacher observation checklists.

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.

Ateacher attaches a ball to a meter long string and whirls it around in a horizontal circle at constant speed. the teacher explains that the string is what makes the ball go in a circle. why is the string necessary? a) the string is needed to apply a torque to the ball. b) the string is needed to push on the ball to get it up to speed. c) circle motion requires an inertia which is provided by the string. d) circle motion requires a force to give it a centripetal acceleratio