Question 2 Which of the following would you predict is least

Question 2 Which of the following would you predict is least soluble in water? H2NCH20H CH4 CH3COOH Question 3 Which of the following makes up MoST of the mass of living cells? O Biological macromolecules O lons and small molecules Water Lipids Question 4 The pH of saliva is approximately 60 the pH of blood is approximately 70 and the sea \"ateris prarinatey writ of Saliva Blood Question 5 buffer equilibrium Shown below is the phosphate 2- are 3 Poa o The pH will change quickly and the equlaonium shift to the fight The pH change quickly and the equilibrium shin the wil wll to 0 The pH vll change sleuly and the equllbrium wil to the right shit The pH will change slowly and the equabrium shit to the left war

Solution

2.Answer.b.CH4 ,Methane is a non polar molecule which insoluble in water

4.Answer 1: pH of sea water is around 7- 7.5 ,while that of blood is 7.35 I.e alkaline but pH of saliva is 5.7 to 7.05 so saliva is the correct answer

3.Answer c: Water constitutes cell\' s 70% mass,so answer c is correct

5.Answer c: To phosphate buffer if acid is added equilibria will shift to right and pH will be maintain quickly.