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How many grams of 50 wt% NaOH (FM 40.00) should be diluted to 1.00 L to make 0.10 M NaOH?
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- How many grams of 50 wt% NaOH (FM 40.00) should be diluted to 1.00 L to make 0.10 M NaOH? (Answer with two digits.)2. How many mL of a 0.250 M KCI solution must be diluted to 1.000 L so that the diluted solution (density = 1.00 g/mL ) is 400 ppm K* by weight ? (MW KCI = 74.55; AW K = 39.10)How many grams of methanol (CH3OH, FM 32.04) are contained in 0.100 L of 1.71 M aqueous methanol?
- 1) 0.1% w/v = ? mg/100 ml? 2) 0.1% = ? ug/ml? 3)What is the concentration of your stock in ug/ml? 4)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.How many grams of methanol (CH3OH, FM 32.04) are contained in 0.100 L of 1.71 M aqueous methanol (i.e., 1.71 mol CH3OH/L solution)?How many grams of Ba(103), (487 g/mot) can be dissolved in 300 ml of water at 25 C. (Ksp of Ba(10), = 1.57 x 10-9) Ba(103)2 Ba2 + 210g o 0.221 g O0.107 g 0.322 g O 0.926 g O 0.298 g
- 1) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units c)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.1a) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units c`The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places. d)What dilution of your stock do you need to get the first standard (100 ug/ml)? Express as 1:x, where x is the fold dilution needed.Given: 0.35g NaCl, 0.25 g NaHCO3, 0.15 g KCl & 2 g C6H12O6 are present in 100 mL ORS solution (MW: Na: 23, K: 39, Cl: 35, H: 1, C: 12, O: 16) Calculate the total amount of bicarbonate expressed in mmol/L present in the prepared solution a 90.10 mmol/L b 80.61 mmol/L c 29.76 mmol/L d 60.34 mmol/L e 111.11 mmol/L f 20.27 mmol/L
- On an emergency cart, you have sodium bicarbonate solution (NaHCO3), 44.6 mEq/50 ml. A physician orders an aerosol of 5 cc and 3.25% strength. How many milliliters of the bicarbonate solution do you need? 1 mEq=1/1000 GEW; GEW= gram formula wt/valence Atomic weights: Na, 23; H, 1; C, 12; 0, 16How much Na2SO4 is required to precipitate 2.50 g of Ba(NO3)2 in the form of BaSO4? AW: Ba = 137.33, Na = 22.99, S= 32.07, N = 14.01, O = 16.00 O 2.50 g O 0.0176 mole O 0.0191 mole O 1.36 gCalculate the mass of a 25.0 wt% KOH solution required to make 525.0 mL of 0.285 M KOH. mass: g