Density of solution (10% ethyl alcohol) = 0 983 g/mL (from handbook) 100 g Volume of solution = ————— = 101 8 mL* 0 983 g/mL 3 Volume percent of solution volume of ethyl alcohol 12 6 Percent = —————————— = ——— = 12 4% total volume of solution 101 8 Reverse the procedure to convert volume percent to mass percent * The volume percent statement generally is Make it a complete lesson day by introducing (m/v) (v/v) (m/m) percent solution calculations then send to the lab to make the best column Students love the challenge and the lab requires them to calculate the percent sugar solution for each color Students enjoy taking a picture of the column the

## How Sweet It Is—How Much Sugar Is Really in That Soda

Based on this data if you know the density of a sugar solution you can look up the concentration of sugar The density can be measured easily using a hydrometer shown to the right in Figure 1 A hydrometer is made of glass and consists of a cylindrical stem and a bulb weighted with lead or other heavy metal to make it float upright

SITE SEARCH Air Conductivity/Salinity Chart Recorders Data Loggers Density Digital Panel Meters Digital Transmitters Electrochemistry Electrophoresis Flow Guages/Switches Force Gauges and Relationship between Salt Solution and Sugar Concentration (Brix) and refractive index at 20C 29 5: 10 C: 26 38: 1 3804: 29 6: 20 C: 26 50: 1

28-4-2009Step 1: Weigh the sugar to determine it's mass Step 2: Measure the volume of the sugar in the container Step 3: Mass/Volume = Density Step 4: You have your density of sugar (Dont forget units ) Step 2 (expanded): Find a liquid that sugar is insoluble in Add the liquid to a graduated cylinder Note the volume (V1) Add the sugar which you

I figured that the specific gravity of a liquid would be the same whether it was a saline solution or sugar The issue I think is the 'refractive index' of both sugar and salt Each bends light differently Salt has an index value of about 1 5 but sugar at 30% concentration is about 1 38 The refractometer is calibrated for an index relevant

4 Repeat steps 4 and 5 three times -- giving a total of four readings Record these readings in the appropriate box es on the Data Sheet Average the four readings and record the a verage value on the data sheet 5 Drain the sugar solution from the plastic tube into a rece p tacle from which you can retrieve the plastic ball with fo rceps or

## Lab 2: Density Help Page

5 How many mL of concentrated HCl solution are needed to provide 90 0 g of HCl? Concentrated HCl is 37 0% HCl by weight and has a density of 1 19 g/mL Practice for 5 Concentrated nitric acid is 70 0% nitric acid by weight (70% w/w) Elsewhere on this bottle

What happens when sugar and salt are added to water? Pour in sugar shake in salt and evaporate water to see the effects on concentration and conductivity Zoom in to see how different sugar and salt compounds dissolve Zoom in again to explore the role of water

Water's density is 1g/mL but alcohols and other types of liquids may have higher or lower densities 5 mL (volume) of water and 5 mL (volume) of pure ethyl alcohol won't have exactly the same weight So a 5% (v/v) solution of ethyl alcohol and a 5% (w/v) solution of ethyl alcohol won't have exactly the same alcohol concentration c weight per volume (w/v) Example: If you dissolve 5 g of

I figured that the specific gravity of a liquid would be the same whether it was a saline solution or sugar The issue I think is the 'refractive index' of both sugar and salt Each bends light differently Salt has an index value of about 1 5 but sugar at 30% concentration is about 1 38 The refractometer is calibrated for an index relevant

Calculate the density of any object or substance by dividing its mass by its volume You first have to measure these values and there are certain tricks you might need to employ depending on the nature of the substance you are measuring To calculate the density of sugar

The more sugar that's mixed into a measured amount of water the higher the density of the mixture As the Sugar Rainbow reveals a solution with a low density stacks on top of a mixture with a high density Next: Hot Cold Water Science Experiment homemade lava lamps

Corn sugar solution Glucose solution Grape sugar solution Notify local health and pollution control agencies Protect water intakes DEXTROSE SOLUTION DTS 9 20 SATURATED LIQUID DENSITY Temperature (degrees F) Pounds per cubic foot 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 74 910 74 910 74 910 74 910 74 910

Problem: How many grams of a 18 5% sugar solution contain 74 5 g of sugar? FREE Expert Solution Problem Details How many grams of a 18 5% sugar solution contain 74 5 g of sugar? Learn this topic by watching Mass Percent Formula Concept Videos All Chemistry Practice Problems Mass Percent Formula Practice Problems Q Isopropyl alcohol is mixed with water to produce a 38 0% (v/v) alcohol

## Create a Density Rainbow

Add three tablespoons of water to each of Cups 1 through 4 and stir each solution (Leave Cup 5 empty ) If the sugar does not dissolve add one more tablespoon of water to the solution Add two to three drops of redfood coloring to Cup 1 yellow food coloring to Cup 2 green food coloring to Cup 3 and bluefood coloring to Cup 4 Then stir each solution To make the density column pour the Cup

The density of the NaCl brine solution is found to have a variation in the density values due to the concentration and the temperature of the solution According to Xu [12] the density of brine solution could be determined using the following polynomial representation-ρ(S T) = a1+a2T+a3T 2+a 4T 3 Properties of solutions

So when you freeze sugar water or juice the sugar stays behind in the liquid water as the ice forms Why does that make it harder for the ice to form lowering the freezing point? Here's a clue- it turns out that the type of molecule dissolved in the water doesn't make nearly as much difference for the freezing as the number of molecules per volume

the density of a solution is plotted on a graph against the concentration of solute a regular pattern is evident—density is propor-tional to concentration Percent Sugar 1% 5% 10% 15% 20% Density at 20 C 1 002 g/mL 1 018 g/mL 1 038 g/mL 1 059 g/mL 1 081 g/mL 2

Table 3: Density values of sugar solutions from other students group Sugar solution 4 Sugar solution 5 Sugar solution 6 Concentration (mass/mass %) of sugar solution Average density value of sugar solutions (g/mL) 20% 25% 30% 0 999 g/m2 1 01g/mL 1 02 g/mL to Table 4: Use graph to find the unknown % concentration of the sugar solution 1

Corn sugar solution Glucose solution Grape sugar solution Notify local health and pollution control agencies Protect water intakes DEXTROSE SOLUTION DTS 9 20 SATURATED LIQUID DENSITY Temperature (degrees F) Pounds per cubic foot 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 74 910 74 910 74 910 74 910 74 910

28 04 2009Step 4: You have your density of sugar (Dont forget units ) Step 2 (expanded): Find a liquid that sugar is insoluble in Add the liquid to a graduated cylinder Note the volume (V1) Add the sugar which you have weighed Note the volume (V2) V2 - V1 = displaced volume = volume of sugar Mass Sugar / Volume Sugar = density of sugar Caramel offers an excellent piece of advice: