Imagine that you are making yourself a chocolate milk beverage, using cocoa powder. What could you do if you wanted the cocoa powder to dissolve quickly and well?
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Imagine that you are making yourself a chocolate milk beverage, using cocoa powder. What could you do if you wanted the cocoa powder to dissolve quickly and well?
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- About 10.0 g of an unknown sample was dissolved in 500 mL aqueous solution. The solution has an osmotic pressure of 7.8 x 10-3 atm at 22 degrees celsius. What is the molar mass of the sample? a. 3.2 x 104 a. 1.6 x 104 a. 5.7 x 104 a. 6.2 x 104Consider substances A and B. Substance A is soluble in hot water, but not in cold water. Substance B is not soluble in hot or cold water. How would the procedure for separating substances A and B differ from the procedure used to separate sand and table salt? (hint how would substance A be isolated)Dilution means adding water to something so that the ratio of solute to solvent is less than in the original solution. Some people say, “Dilution is the solution to pollution.” Do you think this statement true? Could you ever add enough water so that there would be no drink mix—that the water would be the same as in cup #6, pure water? Do you think you could you ever add enough water to a pollutant to make it disappear completely? Why or why not?
- In the process of distillation of a mixture of acetone and water, how does the composition of the first vapor produced compare with that of the original mixture?Can distillation process be used to convert muddy water to potable water? Explain why.Distillation is a physical process of separation of liquids that differ in what physical property? Freezing point Degree of size Solubility Melting Point Boiling point
- A bubble of air escaping from a diver's mask rises from a depth of 163 ft to the surface where the pressure is 1.00 atm. Initially, the bubble has a volume of 10.0 mL. Assuming none of the air dissolves in the water, how many times larger is the bubble just as it reaches the surface? Use this data: 1. The density of seawater is approximately 1.025 g mL1 2. The density of mercury is 13.6 g mL 1 i times larger Use your answer to explain why scuba divers constantly exhale as they slowly rise from a deep dive. v by a factor of approximately , the volume must by a Since the pressure i factor of approximately i increase decrease Divers exhale to the amount of gas in their lungs, so it does not v to a volume rrarrthe diver's lungs.A bubble of air escaping from a diver's mask rises from a depth of 159 ft to the surface where the pressure is 1.00 atm. Initially, the bubble has a volume of 10.0 mL. Assuming none of the air dissolves in the water, how many times larger is the bubble just as it reaches the surface? Use this data: 1. The density of seawater is approximately 1.025 g mL1 2. The density of mercury is 13.6 g mL-1 times larger Use your answer to explain why scuba divers constantly exhale as they slowly rise from a deep dive. Since the pressure by a factor of approximately i , the volume must by a factor of approximately i Divers exhale to the amount of gas in their lungs, so it does not to a volume than the diver's lungs. eTextbook and Media Hint Assistance Used Pressure is inversely proportional to the volume. Set up P1V1 = P2V2 and solve for V2 after you determine the pressure at 159 feet below the surface.Which is the smallest particle size: rock salt, regular salt, or finely powdered salt? Which is the largest particle size: sugar cubes, granulated sugar (regular table sugar), or powdered sugar? Which one will dissolve the fastest? Powdered sugar or granulated sugar? In hot water or in cold water? Stirred or not stirred? Large particles or small particles? fis OR Which holds more solid solute: hot or cold liquids? Wi Which holds more gaseous solute: hot or cold solvents? Но What property of gases allows them to be pressured into solution? Ctephenmurrav.Com Legal copying of this worksheet requires
- Part 3. Solubility. For the following molecules label whether you think it will be more soluble in water (H₂O) or dichloromethane (CH₂Cl₂) at 25 °C. OH НО. О ОН ОН OH OHAnswer the following questions in the spaces provided. 1. Identify four physical properties of gold that made it a great choice for currency. 2. Colloidal gold in solution changes colour depending on the size of the particles. Briefly explain how particle size relates to the colours we can see. 3. Copper and silver are better conductors of electricity than gold, but gold is more commonly used in electronics. Explain why. 4. Provide a brief summary of the history of gold mining in New ZealandA bubble of air escaping from a diver's mask rises from a depth of 180 ft to the surface where the pressure is 1.00 atm. Initially, the bubble has a volume of 10.0 mL. Assuming none of the air dissolves in the water, how many times larger is the bubble just as it reaches the surface? Use this data: 1. The density of seawater is approximately 1.025 g mL1 2. The density of mercury is 13.6 g mL1 i times larger Use your answer to explain why scuba divers constantly exhale as they slowly rise from a deep dive. Since the pressure v by a factor of approximately the volume must v by a factor of approximately Divers exhale to the amount of gas in their lungs, so it does not to a volume than the diver's lungs. decreases increases eTextbook and Media Hint Assistance Used Pressure is inversely proportional to the volume. Set up P,V1- P2V2 and solve for V2 after you determine the pressure at 180 feet below the surface.
