bio 121 chapter 2 questions

Do these chemical formulas make sense ? H2Clno b/c hydrogen electron fills up oneDo these chemical formulas make sense ? MgCl2yesWhich of the following molecules would you predict is capable of forming hydrogen bonds? a.CH4 B.CH3OH C.NaCl D.H2 E. A,B and D can form hydrogen bondsB. CH3OHA triple covalent bond would ? A. be very polar B. involve the bonding of three atoms C. involve the boning of six atoms D. produce a triangularly shaped molecule E. involve the sharing of six electronsE. involve the sharing of six electronsTaking into account the bonding capabilities of valence C and O, how many hydrogen atoms must be added to complete the following structural diagram of this molecule? A.9 B.10 C.11 D.12 E.13D.12Each water molecule is capable of forming ? A. one hydrogen bond B. three hydrogen bonds C. four hydrogen bonds D. two covalent bonds and two hydrogen bonds E. four polar covalent bondsC.The polar covalent bonds of water molecules ? A. promote the formation of hydrogen bonds B. help water dissolve nonpolar solutes C. lower the heat of vaporizations and lead to evaporate cooling D. create a crystalline structure in liquid water E. do all the aboveA. promote the formation of hydrogen bondsWhat accounts for the movement of water up the vessels of a tree wall? A. cohesion B. hydrogen Bonding C. Adhesion D. hydrophilic cell walls E. all the aboveE. all the aboveClimates tend to moderate near large bodies of water because? A. a large amount of solar heat is absorbed during the gradual rise in temperature of the water B. water releases heat to the environment as it cools C. the high specific heat of water helps to moderate air temperatures D. a great deal of heat is absorbed and released as a hydrogen bond break or form E. all of the aboveE. all of the aboveYou have three flasks containing 100 ml of different liquids. Each is warmed with 100 calories of heat. The temperature of the liquid in flask 1 rises 1 *c, in flask 2 it rises 1.5 C* , and in flask 3 it rises 2 C* . Which of these liquids has the highest specific heat? A. the liquid in flask 1 B. the liquid in flask 2 C.the liquid in flask 3 D. you cannot tell unless you know what liquid is in the flask E. this type of experiment does not relate to the specific heat of a substanceA. the liquid in flask 1ice floats because A. air is trapped in crystalline lattice B. the formation of hydrogen bonds releases heat, warmer objects float C. it has a smaller surface area than liquid water D. it insulated bodies of water so that they do not freeze from the bottom up E. hydrogen bonding spaces the molecules farther apart, creating a less dense structure.E. hydrogen bonding spaces the molecules farther apart, creating a less dense structurewhy is water such an excellent solvent? A. as a polar molecule, it can surround and dissolve ionic and polar molecules B. it forms ionic bonds with ions, hydrogen bonds with polar molecules, and hydrophobic interactions with nonpolar molecules C. it forms hydrogen bonds with itself D. It has a high specific heat and high heat of vaporization E. it is a liquid and has high surface tensionA. as a polar molecule, it can surround and dissolve ionic and polar moleculesa hydration shell is likely to form around A. an ion B. a fat molecule C. sugar D. both A and C E. both B and CD. both A and Cwhich of the following are least soluble in water? A. polar molecules B. Nonpolar molecules C. ionic compounds D. Hydrophilic molecules E. AnionsB. nonpolar moleculesAdding a base to a solution would A. raise the ph B. lower the ph C. decrease [h+] D. do both A and b E. do both B and cA. raise the ph C. decrease [h+]An archaean, Natronobacterium is able to live in lakes with ph values of 11. How does ph 11 compare with oh 7 typical human body cells? A. it is four times more acidic than ph 7 B. it is four times more basic than ph 7 C. it is a thousand times more acidic than ph 7 D. it is a thousand times more basic than ph 7 E. it is ten thousand times more basic than ph 7E. it is ten thousand times more basic than ph 7A buffer A. releases excess oh- B. releases excess h+ C. is often weak acid-base pair D. always maintains a neutral ph E. both c and d are correctC. always maintains a neutral phwhich of the liquids has the highest molar concentration of oh- cola -2 juice-3 beer-4 coffee -5 human blood -7.4human blood -7.4comparing the [h+] of orange juice and coffee, the [h+] of A. orange juice is 10 times higher B. orange juice is 100 times higher C. orange juice is 1000 times higher D. coffee is 2 times higher E. coffee is 100 times higherb. orange juice is 100 times higherwhat is the concentration of oh- in a liter of beer = -4 A. 1.0 x 10^-4 B. 1.0 x 10^-10 C. 6.02 x 10^-23 D. 6.02 x 10^-19 E.6.02 x 10^-131.0 x 10^-10what happens when liquid water is denser then ice ?ice floats