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What is the mass/volume percent of a solution that contains 250 mg of NaNO3 in 2...
3. What volume of 40.0% NaNO3 solution contains 0.15 mole of NaNO3? Density 1.32 g/mL
8. What volume of a 5.00 M NaNO3 solution should you use to make 0.500 L of a 1.50 M NaNO3 solution? 9. What volume (in mL) of a 0.230 M HNO3 solution will completely react with 21.3 mL of a 0.125 M Na2CO3 solution according to this balanced chemical equation? NazCO3(aq) + 2 HNO3(aq) → 2 NaNO3(aq) + CO2(g) + H200)_
What volume of a 5.50 M solution of NaNO3 do you need to make 0.550 L of a 1.70 M solution of NaNO3? Express the volume to three significant figures and include the appropriate units.
2. a) What is the concentration of chlorine in mg/L of household bleach that contains 6 percent by weight of Cl2. Note the density of water is approximately 1,000 kg/m and specific gravity of Cl2 = 1.41 at 20 °C. b) If you are to use this bleach solution to treat 1,000 L water for disinfection, what is the volume of the bleach solution should you use to obtain a target chlorine concentration 1 mg/L?
23. Find the molarity and percent mass of the Mg(OH)2 solution using the information below. (12 pts.) For 2 extra credit points, calculate the pH and pOH. Volume of Mg(OH)2 solution Mass of evaporating dish and Mg(OH)2 solution 50.391 g Mass of evaporating dish Mass of evaporating dish and dried Mg(OH)2 10.00 mL 40.380 g 40.868 g
A solid consists of a mixture of NaNO3 and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution is lowered by 5.26°C. What is the composition by mass of the solid? ----- g NaNO3 ----- g Mg(NO3)2
A solid consists of a mixture of NaNO3 and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution is lowered by 5.06°C. What is the composition by mass of the solid? ____ g NaNO3 ? ____ g Mg(NO3)2 ?
A solid consist of a mixture of NaNO3 and Mg(NO3)2. When 6.50 g of the solid is dissolved in 50.0 gof water, the freezing point of the solution is lowered by 5.44 degree C. What is the composition by mass of the solid? g NaNO3 g Mg(NO3)2
What volume of a 6.50 M NaNO3 solution should you use to make 0.575 L of a 1.60 M NaNO3 solution? 1000 mL = 1L 405 mL red 93.0 mL 215 mL uswer 142 mL
The mass of a solute versus the volume of a solution is known as mass/volume percent. It is a unit for concentration (g/L x 100%) often used in medicine, particularly with intravenous (IV) bags. If the mass percent of the saline is 0.9%, how many grams of “salt” are in a 1 L saline IV solution? Show your calculations. Retain all units where appropriate in your calculations. [HINT: 1% is the same as 1 gram in 100ml.]