QUESTION 10 Calculate the total osmolarity of a solution containing 0.5M glucose and 0.25M K3PO4 OA....
QUESTION 31 A solution was made by dissolving 26.5g of Na2CO3 in 500.0 mL of water. What is the molality of this solution? (1.0g of water -1.0 ml of water) 11 Na23.6C128016 OA 0.25 m OB. 0.25 M OC 0.5M OD 0.5 m E. None of above QUESTION 32 Molarity (M) of a solution varies with O A Pressure O Temperature OC Partial pressure D. Both A and B OE. Both A and C QUESTION 33 Which of the following...
Please answer questions 3-5
3) A solution has 10 mM of glucose and 25 mM of albumin protein. What is the osmolarity lennso ensidmem of eub stom 1sloc bne.enol begisro 0 ortt wobevon 2eluoolom esen eosevsel 10 Y oe berotnoonoo 2es ot o noituloe belsntnson00 nistog to eeqy 016 tod) enlelo10 1elmeo o lennsrdo ens nelog 26 noiautib bateillost bollso al aeso1 ein 4) A solution contains 50 mM NaCl, 20 mM alucose, and 10 mM albumin. What is the...
QUESTION 1 How many total valence electrons are there in one ion of thiosulfate, S,0,-7 OA. 32 OB. 30 C. 28 OD. 26 OE. 7 QUESTION 2 Choose the best Lewis structure for Xel 2. CA I-Xe-i: oc - Xe CD. G=Xe=: CE :=Xe=; QUESTION 3
Calculate the following: a. The pH of a 500.0 mL buffer solution containing 0.75 M HCN (Ka = 6.2 x 10^-10) and 0.55 M NaCN b. The pH of the above buffer after the addition of 100.0 mL of 1.0 M NaOH. c. The pH of the buffer if 100.0 mL of 1.0 M HCl was added to the solution in part a.
Question 1 10 pts Calculate the pH of a solution containing 0.375 M hypochlorous acid (Ka = 3.0e-8) combined with 0.25 M calcium hypochlorite.
Question 22 (2.5 points) How many grams of glucose (C6H1206) are in 3.55 moles of glucose? A) 180. g B) 639 g C) 103 g D) 426 g E) 50.7 g А с ОЕ B D Question 23 (2.5 points) How many grams of MgO are produced when 40.0 grams of O2 react completely with Mg in the following reaction? 2Mg (s) + O2(g) → 2MgO(s) A) 30.4 g B) 50.4 g C) 60.8 g D) 101 g E) 201...
QUESTION 11 Calculate the pH for an aqueous solution of acid that contains 2.15 x 10-3 M H30 at equilibrium. A. 4.65x 10-12 B. 2.15 x 10-3 11.33 Oc OD. 2.67 QUESTION 12 Calculate the pH for an aqueous solution that contains 2.15 x 10-3 M OH at 25 °C A. 4.65 x 10-11 B.2.15x 10-4 O c.3.67 OD. 11.33
Question 2 (10 points) Calculate the freezing point of a solution that contains 5.78 g of glucose, a non- electrolyte, dissolved in 130 g of water. Note: Kf for water is 1.86°C/m
Please answer all parts to this question, parts a through f...
they are all part of the same question so I could not post them
separately. Also please make sure they are correct! The last person
got them wrong.... Thanks! Will give thumbs up if they are all
answered :) Don't forget part f! thanks.
Here is a list of hypothetical acids with their pK 's. The pK, values are valid at 25 °C. Acid pK, A 3.44 B 5.12...
QUESTION 43 (10 Marks) a) Calculate the conductivity of an intrinsic silicon (SI) semiconductor at 27°C if the hole mobility is 460 cm V's and the electron mobility is 1350 cm? Vis! Assume an intrinsic carrier density of 1.45 x 10 carriers/cm' and an electron charge of -0.16 x 10-4C (3 marks) b) Using Figure 8, calculate the conductivity of the Si intrinsic semiconductor if the temperature is increased to 150°C, assuming the same electron and hole mobilities (2 marks)...