Keq - Samenvattingen, Aantekeningen en Examens

CHEM 129 Final Exam Questions And Answers (Verified And Updated) Calculate the molar solubility of Calcium Sulfate with a Ksp=2.4x10^-5 - answerHINT: just an ICE Table x= 4.89x10^-3 Calculate the solubility of Aluminum hydroxide with Ksp=3x10^24 - answerx= 7.59x10^-7 Given the solubility of copper (1) Chloride is 4.31mg/100ml, what is the Ksp? - answerKsp=1.89x10^-7 What is the solubility product for each of the following reactions? Silver Iodine Calcium Carbondate Magnesium Hydroxide...

Chem 210 Module 2 Exam (2024/2025) Newest Questions and Answers (Verified Answers) The amino acid, phenyalanine has a pKa = 1.83, and tryptophan has pKa = 2.83. Which is the stronger acid? Phenylalanine!! Nitric acid (HNO₃) reacts with ammonia (NH₃) to yield ammonium nitrate. Write the reaction, and identify the acid, the base, the conjugate acid product, and the conjugate base product HNO₃ + NH₃ ⇌ NO₃⁻ + NH₄⁺ Amide ion, H₂N⁻, is a much stronger base than hydroxid...

Which elements account for more than 97% of the weight of most organisms? A) C, H, N, Mg, O, S B) C, H, N, O, P, S C) C, H, N D) Fe, C, H, O, P E) Ca2+, K+, Na+, Mg2+, ClAnswer: B Page Ref: Section 2 2) Proteins in biological membranes may be A) porous. B) attached to the membrane surface. C) span the membrane. D) All of the above E) B and C only Answer: D Page Ref: Section 3 3) Which statement about cellulose is false? A) It is the most abundant polysaccharide in nature. B) Its...

Of the following substances, _____ has the HIGHEST normal boiling point. a) HCl b) CH2Cl2 c) CH3Cl d) NaClNaCl What is the expression for the equilibrium constant? N2(g)+3H2(g)⇔2NH3(g)Keq=[NH3]2/[N2][H2]3 Solubilities of several ionic compounds in water as a function of temperature. Which of the following has the highest solubility (expressed as g of salt in 100 g of water) at 20°C? a) Potassium chloride b) Cerium sulfate c) Sodium nitrate d) Potassium nitrateSodium nitrate

energy - capacity to do work Compare potential energy and kinetic energy. Classify different energy forms into one of these two categories - potential energy is the possibility to do work: -chemical potential -concentration gradient -gravitational -stored mechanical kinetic energy -electrical -sound -radiant -thermal -motion Explain why cells need energy? Describe the types and examples of cellular work. - 1. synthetic work 2. mechanical work 3. concentration work 4. electrical ...

BIO 311C Exam 3 QUESTIONS AND ANSWERS A+ GRADED Which of the following in an anabolic process that is endergonic and endothermic? A) ATP + H2O → ADP + Pi B) C6H12O6 + 6O2 → 6CO2 + 6H2O C) CO2 + H2O → CH2O + O2 D) FADH2 → FAD + H2 E) CH4 + 2O2 → CO2 + 2H2O C) CO2 + H2O → CH2O + O2 Which of the following represents potential energy? A) Chemical bonds B) Water in a dam C) Charged battery D) A and B only E) A, B and C are correct E) A, B and C are co...

BIOC384 EXAM MODULES 1-3 ...

Biochem Module 2 Questions and Answers Graded A What is the shape of water? Bent. The bond angle is 104.5 degrees. What is autoionization, and how is it important for water? Autoionization is the ability of a compound to react with itself to form ions. One water molecule reacts with a second molecule to form two ions: H3O+ and OH-. These ions exist in small amounts in pure water and influence the chemistry of water. Name the three non-covalent forces discussed in this module 1. Dipole-dipole f...

What migrates to cathode - Answer-cations migrate to the cathode What is the only achiral amino acid - Answer-glycine How many liters is one mole of gas - Answer-22.4 What is the only thing that can change Keq - Answer-Temperature What can change Q (reactant quotient) - Answer-Volume, concentration, etc What is the heat of formation for elements - Answer-0 Relationship between solubility of gases in liquids and atmospheric pressure - Answer-directly proportional. What is the...

2-phosphoglycerate(2PG) is converted to phosphoenolpyruvate (PEP) by the enzyme enolase. The standard free energy change(deltaGo') for this reaction is +1.7 kJ/mol. If the cellular concentrations are 2PG = 0.5 mM and PEP = 0.1 mM, what is the free energy change at 37 oC for the reaction 2PG ↔ PEP? correct answers -2.4 KJ/mol Which statement below most accurately describes catabolic and anabolic pathways? correct answers Catabolic pathways degrade molecules and anabolic pathways synthesize ...