What is the formal charge on the carbon atom in methane, CH4? Report your answer as a whole number without any decimal places. Provide your answer below:
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- (11) Try Again Your answer is incorrect. • BP: The name of this compound is not "boron phosphide". Be sure you know the correct names of all elements in this compound. Check the Periodic Table if necessary. • C3S2: Your answer is incorrect. Fill in the systematic names of the following chemical compounds. Note: for compounds containing hydrogen, you may give the common name instead. molecular formula BP C₂S₂ CS₂ BI₂ H₂O Explanation Recheck name of compound boron phosphide carbon subsulfide carbon disulphide boron triiodide water X Ś olo ArThe arrangement of atoms in several biologically important molecules is given here. Complete the Lewis structures of these molecules by adding multiple bonds and lone pairs. Do not add any more atoms. (a) the amino acid serine: 車 0-H H-C-H H Н—N—с—с—о—н H (b) нон H-N-C-N-H (c) pyruvic acid: ноо н—с—с—с—о—н H. (d) uracil: H (e) carbonic acid: H-0-C-0-HDraw the Lewis structure of BH4- and use your Lewis structure to help fill in the missing numbers. Hint: you must put a number in each box. If the answer is zero, you must enter "0". The Lewis structure has: lone pairs = single bonds = double bonds = triple bonds = atoms with a positive formal charge = atoms with a negative formal charge = Is this structure stabilised by resonance? (Enter either yes or no below - no other words).
- TRUE OR FALSE All atoms play a role in the physicochemical and pharmacologic properties of a molecule. Sophistication and advancement in technology are the main driving forces of drug development. Organic medicinal chemistry is the study of matter, specifically, all carbon-containing compounds. A functional group will always have the same physicochemical properties, regardless of its neighboring atoms in a molecular structure. Addition of a single methyl group in a drug molecule may result to changes in physical, chemical, pharmacokinetic, and pharmacologic properties. Steric effects occur when bulky and large functional groups are near each other in a molecular structure. Molecules that are highly capable of hydrogen bonding tend to be more soluble in nonpolar solvents.Q-10. Vinegar (a) + Baking Soda (b) → Sodium Acetate + Carbon dioxide + Water. Write the molecular formula of 'a' and 'b'.Answer the questions in the table below about the shape of the carbon tetrachloride (CC14) molecule. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) 0 (choose one) × Ś
- Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance chemical symbol, chemical formula or Lewis structure boiling point do HIC-H || (Choose one) A HIC H B H₂ (Choose one) :0: || (Choose one) ✓ HIC H Co (Choose one) S ? C D XDetermine a molecular formula, e.g. CH4, from the line structure below. Specify elements in the following order: C, H, others(in alphabetical order). Example: C4H,CIOS OH Molecular formulaesc What are the molecular and empirical chemical formulas of a compound made up of these molecules? :O: H H :O: | | || H—Ö—C—C—C—C—Ö-H molecular formula: empirical formula: Explanation W Check X U U The lines stand for chemical bonds between the atoms. You can ignore the dots -- they represent "lone pairs" and you'll learn about them later. X Ś Costa V G ↑ MacBook Pro N © 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | A You M MOSISO
- a. CH3CHO(g) + O2(9) CH3COOH(1) b. AgCl(s) + Br2(1) AgBr(s) + c. C12H22011(s) + O2(g) Given: Ethanal, CH3CHO(g) Oxygen, O2(g) Ethanoic Acid, CH3COOH (1) Silver Chloride, AgCl(s) Bromine gas, Br2(1) J/Kmol 3 sig. figs. J/Kmol 3 sig. figs. CO₂(g) + H₂O(1) (+) J/Kmol 4 sig. figs. Chlorine gas,Cl2(g) Silver Bromide, AgBr (s) Sucrose, C12H22011(s) Carbon Dioxide, CO2(g) Water H₂0(1) Cl₂(g) Sm(J/K.mol) 250.3 205.138 159.8 96.2 152.23 223.07 107.1 360.2 213.74 69 91You will not find “hydroxide” in the stockroom, but you will find sodium hydroxide (NaOH) andpotassium hydroxide (KOH). Lithium hydroxide (LiOH) is expensive and used in spacecraft airfilters since hydroxide reacts with carbon dioxide, and lithium is lighter than sodium or potassium.Cesium and francium hydroxides are very expensive and little used. Is this information consistentwith your answer to the previous question?3-109 Until several years ago, the two chlorofluorocarbons (CFCs) most widely used as heat transfer media in refrigeration systems were Freon-li (trichloro fluoromethane, CC13F) and Freon-12 (dichiorodi fluoromethane, CCl2F2). Draw a three-dimensional representation of each molecule and indicate the Direction of it.s polarity.
