Common-ion effect

Which one of the fo llowing is often easily separated into its components by simple techniques such l) as filtering or decanting? A) homogeneous mixture B) solutions 0 heterogeneous mixture D) elements E) compounds 2) An clement cannot 2) A) be part of a heterogeneous mixture Ji,) be a pure substance is corrccl for ___ _ 19) A) elements B) homogeneous mixtures Ohcterogeneous mixtures D) compounds 20) Which of the fo llowing is an example of a lieterogeneous mixture? @ oil and vinegar B) 70%…

order to know more about nitrate, we actually must understand what a polyatomic ion is. A polyatomic is an ion which consist of molecules, thus, it may also be referred as a molecular ion. Two or more atoms covalently bond or share electron pairs with each other to make up a polyatomic ion. Once they have bonded, they become considered as a whole single ion. Moreover, it is known to have a charge, most polyatomic ions have a negative charge but there is an exception with a positive charge. In…

and a teabag was placed into a beaker of water. The observation was made for the next 5 minutes. Replacing the water in room temperature to warm water did the same procedure. The following observation was made. Diffusion, Dialysis, and Osmosis Effects of Osmosis on Potato Cells: Experiment1 In this portion…

Ion is a group of atoms which they behave on an electrical charge; there are two types of ions; cation and anion. Cation is a positively charged ion whereas Anion is a negatively charged ion. First ionisation energy- The first ionisation energy is the energy to remove electrons that are unstable from 1 mole of gaseous atoms to gain 1 mole of gaseous ions with a positively charge (1+) As you go down a group, the energy decreases from the top to the bottom due to the shielding effect. When there…

Izod impact strength of PHB is 35-60Jm-1 which indicates the impact resistance. Impact resistance is the ability of a material to withstand a high force or shock applied to it over a short period of time. A high force over a short time has a greater effect than a weaker force over a longer period of time. The impact is also proportionate to the relative velocity of the colliding materials. Therefore, the impact resistance of properties of materials is important when considering the use of these…

temperatures. The attractive force increases as the charge increases, but the distance stays constant, but the attractive force decreases as the charges stay constant, but the distance increases. Since in these ionic compounds, the ions have a strong attraction towards other ions, the boiling temperature increases due to the increases in thermal energy needed to overcome the new intramolecular forces. The fact that these ionic bonds are highly polarized is reflected in extremely high melting…

added to the precipitate, forming a solution possibly containing lead (II) ions. A lack of precipitate formed denied the presence of silver ions. Then, K2CrO4 was added to the solution, forming a yellow precipitate to confirm the presence of Pb2+ ions in Unknown #112.…

Atomic mass: the mass of an atom of a chemical element expressed in atomic mass units; approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes Molar mass: a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance Mole: the amount of a substance contained in 6.02 x 10²³ particles of that substance…

Purpose: The purpose of this experiment was to determine the percent of chlorine in an unknown soluble salt through using gravimetric techniques. The unknown salt was dissolved in water and the chloride ions were precipitated using silver nitrate which produced silver chloride. The silver chloride was then separated by filtration techniques and through this the amount of chlorine in the original salt was able to be calculated. It is expected that the chlorine percent will be around 55.95%…

Topic 1: Chemical bonding 1.True or False: An Ion is when an atom gains or loses an electron. 2.What is a Cation? An ion with a (+) charge. 3.True or False: An Anion does not have a (-) charge. 4.What type of bonding transfers electrons? Ionic bonding 5.What are all the types of chemical bonds? Ionic, Covalent, and Metallic bonding. 6.What do you call an element that has different forms . Isotopes 7.Which type of bonding is the “strongest”? Ionic bonding 8.True or False: Ionic bonds are formed…