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...

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...

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...

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...

The concentration of a solution can be expressed in terms of its molarity (M). A solution with a molarity of one has a concentration of one mole of the solute in every one liter of the solution....

The chemical equation when aluminum reacts with oxygen is: 4Al + 3O2 --> 2Al2O3 3 moles of O2 react with 4 moles of Al to give 2 moles of Al2O3. The ratio of the number of moles of aluminum to...

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...

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...

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...

A chemical compound is a chemical substance that is made of two or more atoms of different elements that share a chemical bond. A chemical formula represents the ratio of atoms per element that...

Aluminum reacts with `H_2SO_4` to form `Al_2(SO_4)_3` . The equation of the chemical reaction is: `2Al + 3H_2SO_4 -> Al_2(SO_4)_3 + 3H_2 ` 2 moles of aluminum react with 3 moles of hydrogen...

I assume you are referring to tricalcium phosphate. The molar mass of this compound is 310.18 g/mole. 660 grams of tricalcium phosphate has 660/310.18 = 2.127 moles of tricalcium phosphate. We need...

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...

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...

Covalent compounds are formed between nonmetals. Examples of nonmetals H , O , N , C , S , P , F , Cl , Br , I. Examples of covalent compounds: - CH2O, H2O etc., Ionic compound is formed between a...

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...

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...

The concentration of a solution can be written in terms of the number of moles of the solute that are present in one liter of the solution. This is called the molar concentration or the molarity....

For parts A & B, see http://www.enotes.com/chemistry/q-and-a/consider-galvanic-cell-based-following-half-333659 Please note that when you post a question, it should only include *one* question....

To solve this problem look at the equation of the chemical reaction that takes place between the antacid which is sodium bicarbonate and citric acid: 3 NaHCO3 + H3C6H5O7 --> 3 CO2 + 3 H2O +...

The reaction between sadium chloride and the hydrochloric acid can be illustrated by, NaOH + HCl --> NaCl + H2O so here 1 mole of NaOH reacts with 1 mole of HCl. Hence it is required to convert...

The equation of the chemical reaction between potassium (K) and oxygen (O2) is: 4K + O2 --> 2K2O From the equation it is seen that 4 moles of potassium react with with one mole of oxygen gas...

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...

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...

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...

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...

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...

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...

Bleach is Sodium Hypochlorite (NaOCl). It is made industrially by the Hooker Process where Chlorine Gas is reacted with Sodium Hydroxide in a cold electrolytic cell following the equation: Cl2...

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...

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...

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...

Palladium has an atomic number of 46 and has 46 electrons orbiting the nucleus. The electronic configuration of Palladium is 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2, 4p6, 4d10. The noble gas which is...

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...

Finding the limiting reactant Given NO2(g) + O2(g) → NO(g) + O3(g) 5.20 g of nitrogen dioxide 3.90 g of oxygen. First step balance the given chemical reaction NO2(g) + O2(g) → 2NO(g) + O3(g) This...

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...

Metallic copper reacts with a solution of silver nitrate to form a solution of copper(II) nitrate and the silver is precipitated. The equation for this reaction can be written as Cu + AgNO3 --->...

You can set up stoichiemetry using the following equation: (15.6 g MgF2) x (38g F / 62g MgF2) x (6.022x10^23 / 19gF) = 3.03 x 10^23 molecules of F or 1.52 x 10^23 molecules of F2

There are many ways of expressing the concentration of a solution. One of them is to write it in terms of the number of moles of the solute that are present in one liter of the solution. This is...

Carbon monoxide reacts with oxygen gas to produce carbon dioxide according to the following equation: `2 CO + O_2 -> 2 CO_2` At room temperature this reaction must be catalyzed. Carbon monoxide...

Molarity is the concentration of a dissolved compound expressed in terms of mole/liter. A solution with a molarity of one has one mole of the dissolved compound in every liter of the solution. A...

Technically speaking, alpha and beta decay are both types of nuclear fission. Fission is the breaking down of an atom's nucleus into smaller parts. Specifically, alpha decay is the breaking down...

Separating a mixture of salt and sugar is actually quite easy. Athough sugar is soluble in any type of alcohol, salt on the other hand is not. If you want to separate the two, first mix both salt...

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...

A major advantage of methanol is that methane, its raw material form, can be mined and is already produced by the U.S. cattle farming industry. Methane, a greenhouse gas, is dangerous in the...

Sulfites are chemical compounds that have the sulfite ion which is SO3-- with a valence of 2-. Iron can form chemicals in which it is capable of existing in many oxidation states ranging from -2 to...

In a blast furnace, which is generally used to obtain pure iron from its ore, the following reactions take place. C + O2 --> CO2 + Heat C + CO2 --> 2CO Fe2O3 + 3CO --> 2Fe + 3CO2 Fe2O3 +...

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...

The empirical formula of the compound that we have to determine is CH. The molecular mass of the compound is given by 78.110 amu. The atomic mass unit or amu is defined as 1/12 the mass of the...

If we are looking at a galvanic cell, then it be a spontaneous process so we need to determine which is the oxidation reaction and which one is the reduction reaction. The half-reaction with the...