Wale w Prepare a soIULIUII WII U 0,11 (0) Which mass of water should be added...
2+ 3 Blood plasma (p 1.03 g/mL) contains 2.5 mmol/L of Ca ions. Assuming that all calcium cations are present as calcium chloride, calculate the mass percentage of CaCl2 in plasmia in mg%. [Answer: 26.9 mg%] 4. The mass percentage of iron as an element in blood is 50 mg%. Calculate the mass of iron cations in 5 kg of blood. [Answer: 2.5 g] prep a SorutioI 0.Which mass of water should be added to 75 g of a 5%...
What mass (kg) of the solvent water should be added to 429 g of the solute tetrahydrofuran to generate a solution that contains 8.70 % by mass C4H8O. Molar Mass (g/mol) - C4H8O 72.12 - H2O 18.015 Density (g/mL) - C4H8O 0.8892 - H2O 0.9982 Name/Formula - tetrahydrofuran / C4H8O - water / H2O
Calculate the amount needed to prepare a solution of PVA 5% w / w (Molar mass: 86.09 g / mol) in 15 ml of a solution (10% water and 90% ethanol).
2 of 6 (0 complete) 1.7.41 How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 40% antifreeze? Toottan a 40% antifreeze solution, 1,5 gallon(s) of water should be added Simplify your answer.) Enter your answer in the answer box and then click Check Anser All parts showing Clear All FS FY F8 F9 F10 2 of6 (0 complete) 1.7.41 How much water should be added to 1 gallon of pure antifreeze...
מו Calculate the mass of glucose (C6H606) that must be added to 100 g of water to give a solution whose freezing point is -3.8°C. The freezing point depression constant of water is 1.86 °C/m. The molar mass of glucose is 180.16 g/mol Give your answer in grams to 3 significant figures
How many grams of MgCl2 (molar mass = 95.2 g/mol) should be added to 300 grams of water to give a solution that freezes at -3.00°C? Kf of H2O is 1.86°C/m.
Wii Desi completes the statement or answers the question. osphate? Na P04-3 u Diff HAL 1. What is the mol solute: mol particle ratio for Sodium phosphate? a. 1:2 C. 1:4 b. 1:3 d. 1:5 2. Which of the following pairs of compounds contains only electrolytes? @ NaCl & Mg(CH3COO)2 c. CsH10Os & MgCl2 b. C&H 206 & Na3PO4 d. KBr & CsH1005 3. What would happen to a red blood cell containing 300 (+/- 15%) mOsmols/L of particles were...
How many grams of solid ammonium chloride should be added to 0.500 L of a 0.247 M ammonia solution to prepare a buffer with a pH of 8.470 ? grams ammonium chloride = g.
IODOMETRIC TITRATION P Matching: Choose the best answer (10 points) 1. The water used to prepare the thiosulfate solution must be 2. E is added to the thiosulfate solution to bring up pH value to 9. 3. The thiosulfate solution must be store in 4. A is added to the 10; mixture to make it slightly acidic. 5. Must the above solution me be titrated immediately? B is the primary standard 7. is the mole ratio for the reaction of...
PEIT A What mass of salt (NaCl) should you add to 1.90 L of water in an ice cream maker to make a solution that freezes at-11.4 C ? Assume complete dissociation of the NaCl and density of 1.00 g/mL for water. VAE ? m(NaCl) Request Answer Submit PEIT A What mass of salt (NaCl) should you add to 1.90 L of water in an ice cream maker to make a solution that freezes at-11.4 C ? Assume complete dissociation...