Chemistry concepts and calculations

Which of the following statement is true? Answer A. The buffer capacity is highe

Which of the following statement is true? Answer A. The buffer capacity is highest at all pH values. B. The buffer capacity is larger the higher the concentration of the buffering…

Which of the following statement is true? Answer A. The buffer capacity is highe

Which of the following statement is true? Answer A. The buffer capacity is highest at all pH values. B. The buffer capacity is larger the higher the concentration of the buffering…

Which of the following statement regarding energy flow are accurate? a. If the r

Which of the following statement regarding energy flow are accurate? a. If the reactants have higher internal energy than the products, E sys is positive and energy flows out the …

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH20H, and glycero

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH20H, and glycerol, HOCH2CHOHCH2OH are true? Butanol is more soluble in water than is glycerol because 1-butanol has…

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH20H, and glycero

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH20H, and glycerol, HOCH2CHOHCH2OH are true? Butanol is more soluble in water than is glycerol because 1-butanol has…

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH2OH, and 1 ,3-pr

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH2OH, and 1 ,3-propanediol, HOCH2CH2CH2OH are true? Butanol is more soluble in water than is 1,3-propanediol because…

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH2OH, and 1,3-pro

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH2OH, and 1,3-propanediol, HOCH2CH2CH2OH are true? Butanol is more soluble in water than is 1,3-propanediol because …

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH2OH, and propyle

Which of the following statement(s) about 1-butanol, CH3CH2CH2CH2OH, and propylene glycol, CH3CHOHCH2OH are true? a) Butanol is more soluble in water than is propylene glycol beca…

Which of the following statement(s) about 2 methyl 1 propanol, (CH_3)_2CHCH_2OH,

Which of the following statement(s) about 2 methyl 1 propanol, (CH_3)_2CHCH_2OH, and propylene glycol, CH_3CHOHCH_2OH are true? 2-Methyl-1-propanol is more soluble in water than i…

Which of the following statement(s) about 2-methyl-1-propanol, (CH_3)_2CHCH_2OH,

Which of the following statement(s) about 2-methyl-1-propanol, (CH_3)_2CHCH_2OH, and propylene glycol, CH_3CHOHCH_2OH are true? Methyl-1-propanol is more soluble in water than is …

Which of the following statement(s) about the solubility of enthanol, CH_3CH_2OH

Which of the following statement(s) about the solubility of enthanol, CH_3CH_2OH, and methanethiol, CH_3SH, are true? Ethanol is more soluble in water because oxygen has a greater…

Which of the following statement(s) are true about C4H4? A. The H atoms are in t

Which of the following statement(s) are true about C4H4? A. The H atoms are in the same plane, but the C atoms are above and below this plane. B. The hybridization of C atoms is a…

Which of the following statement(s) is (are) true about a compound that has a mo

Which of the following statement(s) is (are) true about a compound that has a molecular ion peak in its mass spectrum at mass 69 and shows a prominent peak in its IR spectrum at 2…

Which of the following statement(s) is/are true about electronic geometry? (Sele

Which of the following statement(s) is/are true about electronic geometry? (Select all that apply.) Electronic geometry is the same as Molecular Geometry. Electronic geometries ar…

Which of the following statement\'s is False? in some cases the overal order for

Which of the following statement's is False? in some cases the overal order for a reaction can be determined from its balanced chemical equation the order with respect to each com…

Which of the following statements a true about a voltaic cell for which E degree

Which of the following statements a true about a voltaic cell for which E degree _cell = 1.00 V? It has delta G degree > 0. The system is at equilibrium. it has K = 1. The cath…

Which of the following statements about -oxidation of fatty acids is CORRECT? Wh

Which of the following statements about -oxidation of fatty acids is CORRECT? Which of the following statements about -oxidation of fatty acids is CORRECT? A. Thiolytic cleavage r…

Which of the following statements about DNA microarrays is not true? (a) Using a

Which of the following statements about DNA microarrays is not true? (a) Using automated processes, DNA chips can be made that contain thousands of different DNA segments. (b) Pho…

Which of the following statements about Gibb\'s Free Energy is true? it can only

Which of the following statements about Gibb's Free Energy is true? it can only be one The sign of Go is always the same as Suniverse. If the value of Gnonstandard is negative at …

Which of the following statements about IR spectrophotometry is false All homonu

Which of the following statements about IR spectrophotometry is false All homonuclear diatomic molecules and atoms are invisible in FT-IR Vibrational modes such as stretching ones…

Which of the following statements about NMR spectroscopy is correct and most com

Which of the following statements about NMR spectroscopy is correct and most complete ? (Hint: Be careful.) (A) 1C NMR spectroscopy is the second most common NMR spectroscopy in o…

Which of the following statements about Vitamin K and GLA domains are true (indi

Which of the following statements about Vitamin K and GLA domains are true (indicate all that are true) a) Vitamin K is necessary for the g-carboxylation of glutamic acid residues…

Which of the following statements about amino acids is FALSE? Amino acids are th

Which of the following statements about amino acids is FALSE? Amino acids are the monomeric units for building proteins. Some amino acids have more than one chiral carbon. 18 of t…

Which of the following statements about an S_N1 reaction mechanism is true? the

Which of the following statements about an S_N1 reaction mechanism is true? the reaction is fastest with primary alkyl halide. the reaction exhibits a one - step mechanism. the re…

Which of the following statements about an enzyme is TRUE? (Points : 4) a) Enzym

Which of the following statements about an enzyme is TRUE? (Points : 4) a) Enzymes decrease the speed of a chemical reaction. b) Enzymes are not used up in a chemical reaction. c)…

Which of the following statements about and endothermic reaction are true? Check

Which of the following statements about and endothermic reaction are true? Check all that apply. The products represent a state of higher total energy. The products are less stabl…

Which of the following statements about antioxidants is true? Antioxidants are c

Which of the following statements about antioxidants is true? Antioxidants are considered good because they are easily oxidized. Antioxidants are considered good because they are …

Which of the following statements about autophagy are accurate? Autophagosomes h

Which of the following statements about autophagy are accurate? Autophagosomes have a double-membrane, unlike the single membrane of most vesicles Autophagy generally leads to the…

Which of the following statements about batteries is false c) it is not safe to

Which of the following statements about batteries is false c) it is not safe to recharge a nickel-cadium battery D) a fuel cell is a galvanic cell for which the reactants are cont…

Which of the following statements about benzene is incorrect ? it is more reacti

Which of the following statements about benzene is incorrect?   it is more reactive than 1,3,5-hexatriene it requires high temepratures and pressure to add hydrogen to it the carb…

Which of the following statements about capillary action is false? Capillary act

Which of the following statements about capillary action is false? Capillary action results from the energy of intramolecular interactions Capillary action is strongest between so…

Which of the following statements about capillary action is false? Capillary act

Which of the following statements about capillary action is false? Capillary action results from the energy of intramolecular interactions Capillary action is strongest between so…

Which of the following statements about chemical kinetics is FALSE? 1. A catalys

Which of the following statements about chemical kinetics is FALSE? 1. A catalyst increases the value of a rate constant k by lowering the activation energy Ea. 2. Reactant molecu…

Which of the following statements about chlorophyll is correct? Chlorophyll mole

Which of the following statements about chlorophyll is correct? Chlorophyll molecules are found in the chloroplast stroma Chlorophyll molecules make up the electron transport chai…

Which of the following statements about cholesterol biosynthesis is FALSE? The t

Which of the following statements about cholesterol biosynthesis is FALSE? The thioester bond in acetyl-CoA is a source of free energy that drives the synthesis of cholesterol. Th…

Which of the following statements about collagen is incorrect. Select one: Colla

Which of the following statements about collagen is incorrect. Select one: Collagen contains "non-standard" amino acids, including one called called hydroxyproline (Hyp) The indiv…

Which of the following statements about complex II is true? A. Complex II cataly

Which of the following statements about complex II is true? A. Complex II catalyzes an exergonic reaction but the energy is not sufficient to produce an ATP molecule B. Complex II…

Which of the following statements about compounds is TRUE? A substance that cann

Which of the following statements about compounds is TRUE? A substance that cannot be broken down into simpler substances. A substance composed of two or more elements in fixed, d…

Which of the following statements about effective nuclear charge for the outermo

Which of the following statements about effective nuclear charge for the outermost valence electron of an atom are incorrect? Why? The effective nuclear charge can be thought of a…

Which of the following statements about effective nuclear charge for the outermo

Which of the following statements about effective nuclear charge for the outermost valence electron of an atom are incorrect? Why? The effective nuclear charge can be thought of a…

Which of the following statements about electrochemical cells is true? a) Oxidat

Which of the following statements about electrochemical cells is true? a) Oxidation occurs at the anode b) Reduction occurs at the anode c) The reaction in each of the half-cell c…

Which of the following statements about electrolyte solutions are true? Choose a

Which of the following statements about electrolyte solutions are true? Choose all that are correct 1. Electrolyte solutions contain solvated ions 2. Dissolved ionic compounds alw…

Which of the following statements about electronegativity is/are correct? 1. Dif

Which of the following statements about electronegativity is/are correct? 1. Differences in element electronegativities may be used to predict the type of bonding, ionic or covale…

Which of the following statements about energy in a reaction is not correct? Whe

Which of the following statements about energy in a reaction is not correct? Whenever a system is not at equilibrium, the relative amounts of reactants and products can be express…

Which of the following statements about entropy and chemical reactions is false?

Which of the following statements about entropy and chemical reactions is false? A) The greater the number of microstates of a system, the higher the entropy for that system. B) A…

Which of the following statements about enzyme mechanism reaction steps are true

Which of the following statements about enzyme mechanism reaction steps are true (select all that apply)? On a reaction coordinate diagram, a reversible step is indicated by react…

Which of the following statements about enzymes are true? Check all that apply.

Which of the following statements about enzymes are true? Check all that apply. Generally, an enzyme is specific for a substrate. For example, thrombin catalyzes the hydrolysis of…

Which of the following statements about enzymes are true? Check all that apply.

Which of the following statements about enzymes are true? Check all that apply. Generally, an enzyme is specific for a substrate. For example, thrombin catalyzes the hydrolysis of…

Which of the following statements about enzymes are true? Check all that apply.

Which of the following statements about enzymes are true? Check all that apply. Generally, an enzyme is specific for a substrate. For example, thrombin catalyzes the hydrolysis of…

Which of the following statements about fluorescence and phosphorescence is TRUE

Which of the following statements about fluorescence and phosphorescence is TRUE? Fluorescence is slower than phosphorescence. Fluorescence is a radiation transition between the s…