What is the m/v % concentration of a solution of LiCl with a density of 2.07 g/mL in 40.0 mL of deionized water with a density of 1 g/mL?
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What is the m/v % concentration of a solution of LiCl with a density of 2.07 g/mL in 40.0 mL of deionized water with a density of 1 g/mL?
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- What is the pH of a 0.0025 M solution of HCl?What is the molarity of a NaOH solution if 48.0 mLneutralizes 35.0 mL of 0.144 M H2SO4?To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 3 M NaCl (FW: 58.44 g/mol), and 5mM KH2PO4 (FW: 136.09 g/mol). How many grams of each will you need to make up 850 mL of PBS?
- What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10^-10M?What is the molarity of a solution that contains 50.0 g of vitamin B1 hydrochloride (molar mass = 337 g/mol) in 160 mL of solution?If an unknown solution of cobalt (II) chloride has an absorbance of 0.79, what is its concentration? Include proper units, please How did you determine this using the Beer’s Law plot?
- given a stock solution of 10% dextrose, how would you make 5 mL of a 0.9% dextrose solution? find mL of stock and mL of h20If the average molar mass of a sample of soybean oil is 1500 g/mol, how many grams of NaOH are needed to saponify 5.0 g of the oil?if the absorbance of pure chlorophyll a in a 1 cm cell is 0.876 at 530 nm and the concentration is 8.66 x 10^-6 M, what is the molar extinction coefficient of chlorophyll a?
- How many moles of KBr are there in 89.5 mL of 0.150 M KBr?Propanamide and methyl acetate have about the same molar mass, both are quite soluble in water, and yet the boiling point of propanamide is 486 K, whereas that of methyl acetate is 330 K. Explain.An IV of 650cc of 5% dextrose contains how many grams of 5% dextrose?