Drag and drop the appropriate label to create the "expanded" version of each concentration unit. You may use any of the labels more than once or not at all.
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5 M =
5 mM =
5% by mass =
5% by volume =
5% by mass/volume =
5 ppm =
5 ppb =
5 mL solute
1 L solution
5 mmol solute
100 g solution
5 g solute
5 mL solute
100 mL solution
5 g solute
100 mL solution
5 mg solute
1 L solution
100 mL solution
1 L solution
5 mcg solute
Answer Bank
Drag and drop the appropriate label to create the "expanded" version of each concentration unit. You...
1. The LD50 of cocaine is 95.1 mg/kg. Calculate the concentration of a solution, in molarity if they drank 1 liter of it. 100 g / 303.346 g/mol = 0.329 mol of cocaine. 0.329 mol/ 1 L= 0.329 M for molarity. Is this correct? 2. Find one other concentration unit [mass/mass (g/g) or mass/volume (g/ml) percentage, ppm or ppb] that would be toxic to a 85 kg person. Assume the density of a solution of your substance is the same...
8. You prepare a 500 ml solution that contains 436 NOH The solution has a density o has a measured density of 1.100 g/ml The density of 100 ml. and the density o NaOH is 2.13 g/cm. Complete the following table: Mass of Solute Moles of Solute Volume of Solute Mass of Solvent Moles of Solvent m (moles solute/kg solvent) Total Moles of Solution mole fraction NaOH Mass of Solution mole fraction H20 Volume of Solution ppm (mg solute/L solution)
Concentrations of solute in solvent, whether in saturated solutions or not, can be expressed in many ways (molarity, molality, ppm, percent by mass, etc.). Molarity = moles of solute / liter of solution molality = moles of solute / kg of solvent ppm = mg solute / liter of solution ppb = microgram of solute / liter of solution %-by-mass = (grams of solute / grams of solution) x 100% To convert from %-by-mass to Molarity, assume 100g of solution,...
Match the hazard label to the named reagent. Consult the reading assignment then, drag and drop the appropriate hazard label(s) into the bin associated with each reagent. Labels may be used more than once. salicylamide sodium iodide sodium hypochorite hydrochloric acid Toxic Corrosive rritant Corrosive Irritant Toxic Corrosive Irritant rritant Toxic Corrosive Irritant Salicylamide can undergo an iodination by electrophilic aromatic substitution. List the procedural steps in order to iodinate salicylamide. Start of Lab Dissolve salicylamide in ethandol Add sodium...
Concentration is the amount of solute dissolved in a certain amount of solution: concentration of a solution=amount of soluteamount of solution Solution concentrations are usually given as one of the following: Mass percent (m/m)—the mass of the solute in grams for exactly 100 g of solution Volume percent (v/v)—the volume of solute in exactly 100 mL of solution Mass/volume percent (m/v)—the mass of solute in grams for exactly 100 mL of solution Molarity (M)—the number of moles of solute in...
3. Concentrations in solids and solution. You send a 10-g sample of rice to the lab for the determination of the total arsenic content. The analyst dissolves 1.0 g of the rice in 5.0 mL of concentrated acid and then dilutes the solution to a final volume of 25.0 mL. When analyzed by ICP-MS, the solution concentration is found to be 35 µg L-1. What is the concentration of arsenic in the rice (in µg kg-1)? ___________ ppb Hint: Follow...
<MC 8b Calculating Concentration: Four Common Units < 9 of 32 > Concentration is the amount of solute dissolved in a certain amount of solution: concentration of a solution = amount of solute amount of solution Solution concentrations are usually given as one of the following: • Mass percent (m/m)-the mass of the solute in grams for exactly 100 g of solution • Volume percent (v/v)-the volume of solute in exactly 100 mL of solution • Mass/volume percent (m/v)-the mass...
Each week before you have chemistry lab, someone needs to prepare all the solutions you will use in your experiment. Suppose your experiment for next week calls for 0.500 M NaOH solution, 3.00 M NH4Cl solution, and 0.100 M Na3PO4 solution. Calculate the mass in grams for each solute that would be needed to prepare 8.00 L of each of the solutions. Calculate the mass, in grams, of solute present in each of the following solutions: a. 225 g of...
74 Percent Concentration -The amount of solute dissolved in a fixed amount of solvent is called the concentration of the solution. Concentrations are typically expressed as Mass al.) (% m/m) which is the mass of the solute (g) divided by the mass of the solution [solute+ solvent] (g)x 1000/0; or as Volume ol.) (% v/v ) which is the volume of the solute in a fixed volume of solution (1O0mL of solution) x 1000/0; or less commonly in the laboratory,...
SUTULIUTIS Exercise D Calculating Molarity Concentration (1 pt per answer, 10 total) Complete the following table by calculating the molarity for the following solutions. The molarity is the number of moles of the solute divided by the volume of the solution in Liters. Use the molecular mass of the solute to calculate the moles if you only have the mass of the solute. Fill in all of the empty columns. The volume must be in Liters. Mass of solute Moles...