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Chemistry
A compound, when we are talking about chemistry, is simply any substance that is made up of two or more elements which react with one another. The elements must be present in fixed ratios. So...
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Chemistry
This is a very easy answer. Sugar is soluble in alcohols while salt is not. Simply mix the two in alcohol and filter the solution to get the salt. Then evaporate the alcohol sugar mixture and you...
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Chemistry
There exists several characteristics that make the difference between a mixture and a compound. A mixture can contain components in any proportions while a compound contains components in fixed...
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Chemistry
C6H6 is the chemical formula of benzene. It is a molecule comsisting of 6 carbon atoms and 6 hydogen atoms. When benzene undergoes combustion in air, the carbon and hydrogen atoms combine with the...
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Chemistry
There are more than 1000 compounds we use in our daily lives few are listed below.Sodium chloride (NaCl) known as table salt used for cooking Sodium hydrogen carbonate (NaHCO3) known as baking...
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Chemistry
You cannot directly convert grams to atoms. First you must covert your grams to moles, then you can take the moles and covert to atoms. If you take your 878 grams of fluorine and then look at the...
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Chemistry
A compound is a chemical combination of two or more elements in definite proportions. For example, two hydrogen molecules + one oxygen molecule= one water molecule. A solution is a physical...
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Chemistry
The volume of a given amount of gas is related to the temperature and pressure by the Ideal Gas Law by P*V=n*R*T or V = k*T/P The volume is directly proportional to the temperature and inversely...
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Chemistry
The chemical formula of water is H2O. One molecule of water has 2 atoms of hydrogen and one atom of oxygen. 1 mole of water requires 1 mole of hydrogen (H2) and 0.5 moles of oxygen (O2). The molar...
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Chemistry
Vanadium (V) oxide (V2O5) is used as a catalyst for the oxidation of sulfur dioxide to sulfur trioxide. It is able to catalyze this reaction because it releases oxygen (O2) when heated up. The...
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Chemistry
(NH4)2SO4 is the chemical formula of ammonium sulfate. This compound is formed due to the presence of ionic bonds between ammonium ions and sulfate ions. Ammonium ions have a positive charge of...
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Chemistry
Krypton has an atomic number 36, so it has 36 electrons. Bromine with an atomic number of 35 acquires one electron to attain 36 electrons. This makes it isoelectronic with krypton. The anion of...
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Chemistry
We should be careful when defining "properties" - chemical properties are probably the ones that an instructor would be taking into consideration. By contrast, elements of the same group have very...
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Chemistry
We can calculate the concentration of H+ ions in a 0.1 M solution of acetic acid by using the pKa or ionization constant which for any compound is the negative logarithm of the equilibrium...
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Chemistry
The reaction between carbon dioxide and water to form hydrogen carbonate is an example of a bond-reorganization reaction. As one of the reactants is water it is also referred to as a hydration...
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Chemistry
The reaction of copper (II) sulfate CuSO4 and ammonium hydroxide NH4OH will yield Copper (II) hydroxide Cu(OH)2 and ammonium sulfate (NH4)2SO4. The chemical equation for this reaction would be...
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Chemistry
First We have to balance the given reaction 4Al + 3O2 ----> 2Al2O3 Given Moles of O2 = 6.38 Moles of Al = 9.15 Second find the limiting reactant. Divide the given moles form Stoichiometric...
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Chemistry
You are only allowed to ask one question at a time so I edited down your question accordingly. We need to convert the following to a balanced chemical equation: copper (2) carbonate plus...
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Chemistry
Nitrogen oxides, including NO and NO2, are produced as a result of combustion in a car engine. Pure combustion takes hydrocarbons (gasoline) and pure oxygen (O2) and produces CO2 and H2O. But...
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Chemistry
The limiting reactant in a chemical equation is the reactant that is completely consumed when the chemical reaction takes place. As a result the reactant determines for how long the reaction takes...
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Chemistry
Classifying elements is necessary in order to determine their nature and the possible reactions. We can classify them according to phases: Solid, liquid and gas. Most elements in the periodic table...
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Chemistry
Copper Sulfate can dissolve in water because water is a polar solvent. A polar solvent is one where the molecules that make up the solvent have a charge that is unequally distributed in the...
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Chemistry
The chemical name for table sugar is sucrose (C12H22O11). To classify this compound first we have to know what happens when this compound is in the solution. If it is an acid, it will release...
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Chemistry
Chemists use many different tools and technologies to perform their work. The study of chemicals requires very accurate equipment that can measure precise weights, analyze reactions and color...
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Chemistry
It sure does have a high oxygen content! Hydrogen peroxide has a formula of H2O2; in other words, you can think of it like water with an extra oxygen molecule. It therefore breaks down into water...
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Chemistry
A dielectric is a material that will polarize itself when subjected to an external electric field. The dielectric material itself is not a true conductor of electricity. But the partial positive...
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Chemistry
A 3.00 M solution of sodium chloride (NaCl) has 3 moles of NaCl in every liter of the solution. To find the mass/volume of the 3.00M solution, we must determine the mass of a single mole of NaCl...
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Chemistry
The first ionization energy of potassium is 419 kJ/mol while calcium's is 376 kJ/mol. Note that the first ionization energy is the amount of energy needed to remove an outer electron from the...
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Chemistry
The atomicity of a substance is the number of atoms that each molecule of the substance has. To illustrate this with an example, consider the reaction between hydrogen and oxygen to form water. 2H2...
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Chemistry
In a blast furnace a mixture of iron oxide (Fe2O3), coke (carbon derived from coal), and limestone are heated to produce elemental iron (Fe) plus residual slag. External heat is used to preheat the...
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Chemistry
A titration reaction, in simplest terms, is one in which a substance is added to another substance, ideally drop by drop, till the end point of the reaction is reached. This end point is determined...
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Chemistry
Ethanol (CH3CH2OH) is an alcohol due to the presence of the hydroxyl group (OH). It is a very common chemical and is the "active ingredient" in all alcoholic beverages. Ethanol is not a salt....
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Chemistry
The concentration of a solution can be expressed in many way, one of them is molarity or the molar concentration. If a solution has a molarity of one, it has one mole of the solute in every liter...
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Chemistry
Mercury thermometers make use of the following properties of liquids: Liquids have no set shape. Because mercury has no set shape, it can conform to the shape of the glass tube that the...
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Chemistry
If the products of a reaction act as a catalyst for the reaction, it is referred to as autocatalysis. Reactions that show autocatalysis start slowly and as more of the reactants get converted to...
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Chemistry
An Na+ ion is a sodium atom that has lost one electron as that makes the number of electrons in the atom equal to that of the nearest Nobel gas Neon which has 10 electrons. This completely fills...
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Chemistry
A sample of naturally occurring silicon consists of 28Si that has a mass of 27.9769 amu, 29Si that has a mass of 28.9765 amu, and 30Si with a mass of 29.9738 amu. The atomic mass of silicon the...
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Chemistry
Silicon Carbide (industrially known as Carborundum) is extremely rare in nature, but has been produced in quantity since the 1890's. Its hardness has found many uses in industry; diamond jewelry...
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Chemistry
Boyle's law states that for a fixed amount of gas in an enclosed system at constant temperature, pressure and volume are inversely proportional. In other words, when one of the two variables is...
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Chemistry
Methanamide (HCONH2) is also called formamide. The standard Lewis structure notation involves a single bond between the hydrogen and the carbon, a double bond between the carbon and the oxygen, a...
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Chemistry
In ionic bonds one atom is positively charged (the atom that gives its electrons), and the other atom is negatively charged (the atom that receives the electrons); therefore, it is the opposite...
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Chemistry
Chromatography is a very common lab technique that is used to separate different components of a complex mixture. It takes the advantage of differential solubility of different components of a...
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Chemistry
The acid dissociation constant is a value defined for every acid HA and denoted by Ka = [H+][A-]/[HA] The acid dissociation constant of oxalic acid is 5.60×10^-2 and 5.42×10^-5. There are two...
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Chemistry
It is not possible to accurately identify an element given only the number of neutrons. All atoms are made of three particles: electrons, protons and neutrons. The number of electrons is equal to...
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Chemistry
Condensation and vaporization are, in essence, opposite phenomena. When a liquid (say water) gets hot enough, it vaporizes and becomes a gas. By contrast, condensation is the process whereby a gas...
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Chemistry
`2Al_((s))+3H_2SO_(4(aq)) rarr Al_2(SO_4)_(3(aq))+3H_(2(g))` `Al_2(SO_4)_3` is formed when we add `H_2SO_4` acid to Al solid. Mole ratio `Al:Al_2(SO_4)_3 = 2:1` Molar mass of Al = 27g/mol...
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Chemistry
Since we are looking at the amounts of reactants and products, we first need to write a balanced chemical reaction. For an acid-base reaction, we will see salt and water. HCl + NaOH --> NaCl +...
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Chemistry
The compounds you would like to know the names of are AgNO3, K2S, BaS, Agl and Kl. Here keep in mind that Ag is silver, K is potassium, B is barium and K is potassium. The cation NO3 is called...
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Chemistry
The oxidation number refers to the charge on the central atom of a compound when the ligands attached to it are removed and so are the atoms that associated with the ligand. For the sulfate anion...
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Chemistry
A 4 M solution of lithium bromide has to be made with 100 grams of lithium bromide. A solution with a concentration of 1 M has one mole of the solute dissolved in one liter of the solution. The...