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- A chemist, during the course of an analysis, runs across a chemical composed of carbon, hydrogen, and oxygen in the proportion 1:2:1 and having a six-sided molecular shape. It is probably (a) a pentose, (b) an amino acid, (c) a fatty acid, (d) a monosaccharide, (e) a nucleic acid.7. Identify as true (T) or false (F): All chemical particles exist in a constant state of random motion. In exothermic reactions, bonds in chemical particles generally become weaker. Matter can change its physical state with pressure alone, at a constant temperature. Dispersion forces work on only some chemical particles.Name these organic compounds: structure name CH3 CH,=C– CH; CH3 CH,- CH– CE CH CH, CH, — CH, — с — СH, I Don't Know Submit Terms of O 2021 McGraw Hill LLC. All Rights Reserved. MacBook Air
- (a) (b) (c) Br Br Nal acetone NaCN NaSCH 33a) The molecule ethyne (or acetylene), which has the molecular formula C₂H₂, contains two carbon atoms with linear geometry. Construct a model of ethyne by first connecting two black balls with three springs. Use two short sticks and two yellow balls to complete the structure. Sketch a perspective representation (a three dimensional drawing) of the structure.Select the single best answer. Consider the steps in coal gasification: C(coal) + H₂O(g) → CO(g) + H2(g) CO(g) + H₂O(g) → CO2(g) + H2(g) CO(g) + 3H2(g) → CH4(g) + H2O(g) AH'rxn = 129.7 kJ AH°rxn = -41 kJ AH'rxn=-206 kJ Identify the overall reaction for the production of methane, CH4.