IIT-JEE - Brilliant Public School Sitamarhi
... A closed packed structure of uniform spheres has the edge length of 534 pm. Calculate the radius of sphere, if it exist in (a) simple cubic lattice (b) BCC lattice (c) FCC lattice ...
... A closed packed structure of uniform spheres has the edge length of 534 pm. Calculate the radius of sphere, if it exist in (a) simple cubic lattice (b) BCC lattice (c) FCC lattice ...
Quiz contsts questions chemistry
... The difference between rms velocity and mean velocity at any temperature for different gases diminishes as larger and yet larger molar masses are considered. (b) The square of the mean velocity of molecules is equal to square of the rms velocity at a certain temperature. (c) The ratio of the mean ve ...
... The difference between rms velocity and mean velocity at any temperature for different gases diminishes as larger and yet larger molar masses are considered. (b) The square of the mean velocity of molecules is equal to square of the rms velocity at a certain temperature. (c) The ratio of the mean ve ...
Document
... Si atom. The movement of electron into the vacancy leaves behind a hole which carries positive charge. Another electron from a neighboring Si atom can move into the hole leaving behind another hole. It appears as if the hole has moved through the lattice. The movement of positively charged hole is r ...
... Si atom. The movement of electron into the vacancy leaves behind a hole which carries positive charge. Another electron from a neighboring Si atom can move into the hole leaving behind another hole. It appears as if the hole has moved through the lattice. The movement of positively charged hole is r ...
Topics: • Symmetry • The Concept of Flux • Calculating Electric Flux
... reflective symmetry. If this is the case, we can determine something about the field it produces: The symmetry of an electric field must match the symmetry of the charge distribution. For example, the electric field of a cylindrically symmetric charge distribution a) cannot have a component paralle ...
... reflective symmetry. If this is the case, we can determine something about the field it produces: The symmetry of an electric field must match the symmetry of the charge distribution. For example, the electric field of a cylindrically symmetric charge distribution a) cannot have a component paralle ...
CHEMISTRY CET
... A metallic oxide reacts with water to form its hydroxide, hydrogen peroxide and also liberates oxygen. The metallic oxide could be 1) KO2 (2) Na2O2 3) CaO 4) Li20 Ans (1) ...
... A metallic oxide reacts with water to form its hydroxide, hydrogen peroxide and also liberates oxygen. The metallic oxide could be 1) KO2 (2) Na2O2 3) CaO 4) Li20 Ans (1) ...
CHAPTER 4 - Myschoolpages.com
... Increasing concentration of acid (H+) decreases concentration of base (OH-). Increasing concentration of base (OH-) decreases the concentration of acid (H+) Strong and Weak Acids and Bases - Strong indicates complete dissociation (strong electrolyte) and weak refers to only partial dissociation ...
... Increasing concentration of acid (H+) decreases concentration of base (OH-). Increasing concentration of base (OH-) decreases the concentration of acid (H+) Strong and Weak Acids and Bases - Strong indicates complete dissociation (strong electrolyte) and weak refers to only partial dissociation ...
OCR answers to the examination questions File
... all six carbon atoms. • In benzene all the bonds are the same length between the lengths of the single and double bonds. Phenol is more reactive because the ring is activated. The lone pair from the oxygen on the ring is delocalised into the ring so electrophiles are more attracted to the ...
... all six carbon atoms. • In benzene all the bonds are the same length between the lengths of the single and double bonds. Phenol is more reactive because the ring is activated. The lone pair from the oxygen on the ring is delocalised into the ring so electrophiles are more attracted to the ...
Solutions - University of Manitoba
... The final orange juice solution is similar to a stock solution found in chemical labs. Just as you know the jug of orange juice always has a molarity of 1 mol/L, in other words it contains 1 can of orange juice concentrate in every 1 L of orange juice solution, certain chemicals are packaged in solu ...
... The final orange juice solution is similar to a stock solution found in chemical labs. Just as you know the jug of orange juice always has a molarity of 1 mol/L, in other words it contains 1 can of orange juice concentrate in every 1 L of orange juice solution, certain chemicals are packaged in solu ...
1 AC Losses in High Temperature Superconductors under non –Sinusoidal Conditions
... ranges of the rated currents and magnetic fields for superconducting devices that are required for the optimal operation power of cryogenic equipment and economical gain. The methods of AC loss calculation are usually based on consideration of the non-linear Maxwell equations in which a superconduct ...
... ranges of the rated currents and magnetic fields for superconducting devices that are required for the optimal operation power of cryogenic equipment and economical gain. The methods of AC loss calculation are usually based on consideration of the non-linear Maxwell equations in which a superconduct ...
Overview of Reference Electrodes and Alternative
... solvents as well as its highly reversible and well-behaved kinetics. Users will often add solid ferrocene to their electrochemical cell and find the potential at which its redox character is clearly observed. Then, all other measurements are made vs. ferrocene (whose redox potential is known and rep ...
... solvents as well as its highly reversible and well-behaved kinetics. Users will often add solid ferrocene to their electrochemical cell and find the potential at which its redox character is clearly observed. Then, all other measurements are made vs. ferrocene (whose redox potential is known and rep ...
Solutions and solubility
... structure doesn’t mean to have the same orientation in 3D shapes in nature. At a given temperature only one crystalline form of the different polymorphs will show a highly stable organized & strongly bonded crystals form, this is referred as to the stable form, while the other crystal forms exhibi ...
... structure doesn’t mean to have the same orientation in 3D shapes in nature. At a given temperature only one crystalline form of the different polymorphs will show a highly stable organized & strongly bonded crystals form, this is referred as to the stable form, while the other crystal forms exhibi ...
Acids and Bases
... How can we identify an acid or a base simply by looking at the chemical formula? Since we have defined acids and bases by the ions they release in solution, the first requirement is that they contain H or OH, respectively. However, there are plenty of compounds that contain oxygen and hydrogen atoms t ...
... How can we identify an acid or a base simply by looking at the chemical formula? Since we have defined acids and bases by the ions they release in solution, the first requirement is that they contain H or OH, respectively. However, there are plenty of compounds that contain oxygen and hydrogen atoms t ...
Chapter 4 Student Presentation
... Rules of Oxidation Numbers • Elements have an oxidation number of 0. • The oxidation number of a monatomic ion is the same as its charge. • Oxygen has an oxidation number of 2- (except peroxides, O22-) • Hydrogen has an oxidation number of 1+ (except hydrides, H1-) • The sum of the oxidation number ...
... Rules of Oxidation Numbers • Elements have an oxidation number of 0. • The oxidation number of a monatomic ion is the same as its charge. • Oxygen has an oxidation number of 2- (except peroxides, O22-) • Hydrogen has an oxidation number of 1+ (except hydrides, H1-) • The sum of the oxidation number ...
Chapter 4
... to conduct electricity. To understand why, let’s first look at some significant early discoveries about electricity. Static electricity, such as that produced by running a comb through your hair, has been recognized since ancient times. By the end of the eighteenth century, two types of electric cha ...
... to conduct electricity. To understand why, let’s first look at some significant early discoveries about electricity. Static electricity, such as that produced by running a comb through your hair, has been recognized since ancient times. By the end of the eighteenth century, two types of electric cha ...
Electrodeposition of rare earth metals in ionic liquids
... volatility and their inflammability. Ionic liquids gain increasing attention in the recent years, as electrolytes for the recovery of metals more electropositive than hydrogen. It concerns for salts that are generally liquid at ambient conditions, consisting of a bulky organic cation and a smalle ...
... volatility and their inflammability. Ionic liquids gain increasing attention in the recent years, as electrolytes for the recovery of metals more electropositive than hydrogen. It concerns for salts that are generally liquid at ambient conditions, consisting of a bulky organic cation and a smalle ...
Burning a Candle in a Vessel, a Simple Experiment
... into small particles of fire and escaped from the vessel producing a partial vacuum that drove water to ascend. Although this explanation is wrong and it can appear naive in modern days it was a reasonable explanation in Philo’s time, based on the four classical elements of ancient Greece. Philo and ...
... into small particles of fire and escaped from the vessel producing a partial vacuum that drove water to ascend. Although this explanation is wrong and it can appear naive in modern days it was a reasonable explanation in Philo’s time, based on the four classical elements of ancient Greece. Philo and ...
Active Learning Questions
... 31. Of the hydrogen halides, only HF is a weak acid. Give a possible explanation. 32. Explain why the following are done, both of which are related to acid–base chemistry. a. Power plants burning coal with high sulfur content use scrubbers to help eliminate sulfur emissions. b. A gardener mixes lime ...
... 31. Of the hydrogen halides, only HF is a weak acid. Give a possible explanation. 32. Explain why the following are done, both of which are related to acid–base chemistry. a. Power plants burning coal with high sulfur content use scrubbers to help eliminate sulfur emissions. b. A gardener mixes lime ...
Module Seven - DePauw University
... measurements (you might recall that it is one of seven base quantities in the SI system) and it is the most accurate and precise method for measuring the amount of a substance. And, of course, it is trivial to measure the mass of a solid using a laboratory balance. What about reagents that are not s ...
... measurements (you might recall that it is one of seven base quantities in the SI system) and it is the most accurate and precise method for measuring the amount of a substance. And, of course, it is trivial to measure the mass of a solid using a laboratory balance. What about reagents that are not s ...
History of electrochemistry
Electrochemistry, a branch of chemistry, went through several changes during its evolution from early principles related to magnets in the early 16th and 17th centuries, to complex theories involving conductivity, electric charge and mathematical methods. The term electrochemistry was used to describe electrical phenomena in the late 19th and 20th centuries. In recent decades, electrochemistry has become an area of current research, including research in batteries and fuel cells, preventing corrosion of metals, the use of electrochemical cells to remove refractory organics and similar contaminants in wastewater electrocoagulation and improving techniques in refining chemicals with electrolysis and electrophoresis.