Elements and Compounds

Dissolution of SO3 in water. to form sulphuric Acid.

Industrially, sulphur trioxide is dissolved in sulphuric acid to form oleum.

Oleum ( fuming sulphuric acid) is seriously nasty stuff.

SO3 + H2SO4 = H2S2O7

The oleum is then slowly dissolved in water to form sulphuric acid of the given molarity(strength).

H2S2O7 + H2O = 2H2SO4

It is done this way in order to prevent 'spitting and fuming'. added to which you form twice a mush sulphuric acid.

The chemical formula KC₂H₃O₂ represents potassium acetate. To find the total number of atoms, we can break it down: there is 1 potassium (K) atom, 2 carbon (C) atoms, 3 hydrogen (H) atoms, and 2 oxygen (O) atoms. Adding these together gives a total of 1 + 2 + 3 + 2 = 8 atoms in KC₂H₃O₂.

I'm sorry, but I can't assist with that.

I'm sorry, but I can't assist with that.

Antoine Lavoisier.

However, he developed the names from the Classical Roots.

Oxygen = 'Acid Generator'.

Hydrogen = 'Water Generator'.

NB Many modern scientific names are developed from their Classical Greekm and Latin roots.

The formula for sulfur dibromide is SBr2. Bromide has the prefix di- which means two.

CsBr is the formula for cesium bromide.

The balanced chemical equation for cesium bromide is 2CsBr -> 2Cs + Br2.

The reason why Chemical equations are balanced is because each side of the equation must have the same amount of atoms, it is impossible to, for example, have this side with 3 O and that side with 4 O.

How to check:

Here's a really good and famous example(Guranteed your cehmistry teacher will mention this some day!):

CaO + H2O = Ca(OH)2

Is it balanced?

There's one Ca(Calcium) on one side, same with the other side. (Balanced!)

There's 2 Oxygen on one side, same with the other.(OH)2 Means two Oxygen, two Hydrogen.(Balanced!)

There's 2 Hydrogen on both sides as well(H2).

So the whole thing's balanced!

If it's not balanced, you can't change the numbers, you have to change the number in front. e.g. in the chemical equation of photosynthesis, there's a 6H2O. That means that there is 12 hydrogen and 6 Oxygen, change that "6" at the front to balance stuff. If there's no number at the front, that's the same as "1".

When aqueous solutions of iron(III) sulfate (Fe2(SO4)3) and sodium hydroxide (NaOH) are mixed, a precipitate of iron(III) hydroxide (Fe(OH)3) forms. This occurs due to the reaction between the iron(III) ions and hydroxide ions, leading to the formation of the insoluble hydroxide. The balanced chemical equation for the reaction is: Fe2(SO4)3 + 6 NaOH → 2 Fe(OH)3 (s) + 3 Na2SO4.

NO!!!!

1. It can be combined with metal ores, such as iron oxide (rust)

2. If cooled to a very low temperature it will be come a liquid. If cooling continues it will become a solid.

3. It has an allotrope, named 'Ozone'(O3) , which is three oxygen atoms combined in a triangular structure.

NB Oxygen is a very reactive gas.

Lithium is commonly administered to help stabilize mood in people with bipolar disorder and, in some cases, treatment-resistant depression. It helps reduce extreme mood swings and prevent manic or depressive episodes.

For trusted mental health guidance and support, you can visit integrative-psych.org.

Remember the Avogadro Number.

1 moles = 6.022 x 10^(23) atoms/molecules.

So for 0.106 moles lithium it is

0.106 X 6.022 x 10^(23) = 6.38 x 10^(22) atoms (Li).

or stringing it out

6,380,000,000,000,000,000,000 atoms

Turmeric contains small amounts of sulfur, primarily in the form of sulfur-containing compounds like cysteine and glutathione, which contribute to its health benefits. However, turmeric does not contain chlorine in significant amounts. Its primary active compound, curcumin, is responsible for many of its medicinal properties, while other nutrients and compounds contribute to its overall profile.

The compound CoCl₂ · 4 H₂O is called cobalt(II) chloride tetrahydrate. In this compound, cobalt is in the +2 oxidation state, and the "tetrahydrate" indicates that there are four water molecules associated with each formula unit of cobalt(II) chloride. This hydrated form is often used in various chemical applications and as a color indicator.

The word (equation)/name is 'potassium hydroxide'.

Its chemical formula is 'KOH'.

However, for it to be an equation, what do you want to react with it????

The compound made from iron, sulfur, and oxygen is iron(II) sulfate, also known as ferrous sulfate. This compound has the chemical formula FeSO4. Iron(II) sulfate is commonly used as a supplement to treat iron deficiency anemia and can also be used in various industrial applications.

'NaCl' is the symbol formula.

It is synthesised by ignited sodium metal in chlorine gas.

2Na(s) + Cl2(g) = 2NaCl(s)

NaCl ( Sodium chloride) is common table salt.

The symbol equation for the formation of calcium oxide is: Ca + O2 -> CaO.

Calcium oxide + Stearic Acid = Calcium Stearate + Water

CaO + 2C18H36OOH = (C18H36OO)2Ca + H2O

NB CAlcium stearate is the 'scum' that can appear on the side of a bath, when washing in 'hard' water.

SO2 + Ca(OH)2 = CaSO3 + H2O

The products are Water and Calcium Sulphite ; Note the spelling of the sulphur anion; NOT sulphate.

Chlorine has seven valence electrons.

The electronic configuration is 1s2, 2s2, 2p6, 3s2, 3p5.

These seven valance electrons do NOT readily react, because they are 'tightly' held to the nucleus. However, chlorine has strong electron affinity; Electronegativity; this means it will attract one electron into its valance shell , to complete the octet of eight electrons in the valance shell.

When this 'extra' electron combines into to valance shell , the electron configuration is 1s2, 2s2, 2p6, 3s2, 3p6. , and the chlorine atom is now a 'CHLORIDE ANION' of charge '-1' , (symbolised by Cl^(-)).

'17'

Chlorine Atomic No, is 17.

This means it is in position No. 17 in Periodic Table.

It has 17 protons

It has 17 electrons.

NB Do NOT confuse with Atomic Mass of Chlorine.

Chlorine has two common isotopes.

One isotope has an atomic mass of 35 . That is 17 protons and 18 neutrons).

The other isotope has an atomic mass of 37. That is 17 protons and 20 neutrons).

For both isotopes the number of protons and electrons remains the same. An isotope is a different number of neutrons.

Lithium and fluorine react together to form lithium fluoride which is an ionic compound.

Li2O

The reaction eq'n is

4Li(s) + O2(g) = 2Li2O(s)