A DDF of 2 for drug to cocoa butter means that the volume of 2g drug is equivalent to that of lg cocoa butter. Select one: O True O False

Q: What would a glassware assembly like this be used for? Heating a reaction under reflux conditions…

A: Fractional distillation is a process by which components in a chemical mixture are separated into…

Q: The radioactive element carbon 14 has a 1/2 life of 5750 years a scientist determined that the bones…

A: let assume the initial concentration of C-14 as Co=100%

Q: 33......................can be heating and reshaped is. O A. Thermoset. O B. Thermoplastic.

A:

Q: a) What is the chemicals in plastic and what are the physical and chemical properties of it.

A: Chemicals of plastics In the case of plastic bags, the repeating units are ethylene, or ethene. When…

Q: What is the liquid density of Propane as a fuel?

A: Propane is a hydrocarbon used as fuel.

Q: Name any industry where the study of crystals would be regarded as important and why

A: Crystalline materials ubiquitous in some sectors like electronics, pharmaceuticals, cosmetic…

Q: What is the force of attraction between liquid molecules?    a) Viscosity  B) adhesion  NS)…

A: What is the force of attraction between liquid molecules?

Q: What is à pipetté änd höw is it used?

A: Pipette ia an important instrument used in laboratory of chemistry. It is a small apparatus.

Q: Water __________ upon freezing.     sublimes     contracts     expands     increases its…

A: Water particle contract upon freezing  And viscosity also increase  And also specifuc heat decrease

Q: Questions 2,3 and 4

A: For 2.)  Density = mass/volume Mass = ????  Volume = 55.5 ml Density = 1.84 g/ml Mass = 1.84 * 55.5…

Q: In four or more sentences, explain the advantages of using biodegradable plastic

A: Answer - Biodegradable plastic - Biodegradable plastics are plastics that can be decomposed by the…

Q: State Klechkowsky’s rule.

A: Aufbau principle states that the filling of electrons in atomic orbitals of an atom or ion that…

Q: Having too much sample can cause an inaccurate melting point under these Sir how will the observed…

A: If heating occurs too quickly, the material cannot reach thermal equilibrium. Pure substances melt…

Q: Adhesive forces occur between different molecules.

A: Adhesive forces is defined as the attraction between the two different substances like glass and…

Q: 8)Why measuring melting points?

A: You have a good question

Q: What makes a material a ‘smart’ material?

A:

Q: 70. This process is called , O sublimation process recrystallization process O decolorization…

A: Since cooling takes place ans crystallization occurs.  Hence  the process is recrystallizatiion  So…

Q: 18. Water contamination is a significant issue that can have serious consequences for humans and the…

A:

Q: 35. The polymer is if heated too much, they burn is. A. Thermoset. B. Thermoplastic.

A: Thermo plastics soften on heating whereas thermosetting plastics do not soften on heating.…

Q: What liquid is usually used and measured when calibrating glassware? a. Water with detergent O b.…

A: Answer What liquid is usually and measured when calibrating…

Q: What should be done with the official solution (boric acid) before using it for ophthalmic purposes?…

A: boric acid solution:- boric acid have some antiseptic properties due to that it is used in…

Q: Properties of Liquids and IMF example andbrief discussion

A: Liquids can be defined as fluids which do not have fixed shape but volume. For example: Water, Oil,…

Q: When a melting point determination is performed in the lab, three temperatures are noted.  In order…

A: The temperature at which the solid phase of a substance completely changes to the liquid phase is…

Q: Which one is the different properties of water?  A. transports, lubricates, cushions, and excretes…

A: All known compounds can be dissolve in certain solvents whereas they remain insoluble in other…

Q: One common problem with hard-boiled eggs is that their shells break in the water. Hard boiling eggs…

A: Egg is about 90% water and 10% protein. Egg protein is formed of long chains of amino acids which…

Q: What makes nanotechnology special in terms of how it is used to develop products? *   A. It helps in…

A: Nanotechnology can be defined as branch of chemistry  that  uses of matter on atomic and…

Q: Describe the compounding process?

A: The compounding process has to be described below.

Q: Gas Liquid Solid Use the image above to match the number to the correct phase change condensation…

A: The correct phase change has to be matched with the respective numbers.

Q: A) Elaborate the different methods for removal of impurities from water.

A: Purification means the removal of unwanted impurities present in an organic compound. Impurities in…

Q: Why does a transparent polymer turn opague in the necked region when tested in tension.

A: Answer -  Transparent polymers are usually opaque because of light scattering on the numerous…

Q: Where is the force of attraction the strongest on a magnet

A: Magnets have north and south poles. The poles are the regions where the force of attraction is…

Q: 17. melted. O A. Thermoplastics O B. Thermosetting Plastics are cured into permanent shape is Cannot…

A: Form permanent shape that can't be remelted.

Q: 3 example problems with solution about TEMPERATURE AND HEAT.

A: The formula of temperature and heat is, Where, Q = heat released m = mass of an object c = specific…

Q: Disadvantages of the sublimation process

A: The sublimation process has the following disadvantages.

Q: assumes that particles are not attracted to each other. Which property of liquids proves this…

A: Answer