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 139.8kg of ammonia with 211.4kg of carbon dioxide and obtains 170.8 kg of urea. Determine the theoretical yield of urea Express your answer using four significant figures

Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.