NO!!!!

The only acid that Gold reacts with is 'Aqua Regis;, which is a mixture of Hydrochloric Acid and Nitric Acid.

Remember the Equation

Moles = mass(g) / Ar (Relative Atomic Mass)

Algebraically rearranging

mass(g) = moles X Ar

We have 1 mole and from the Periodic Table the Atomic Mass of Sulphur is '32'.

Hence substituting

mass(g) = 1 moles X 32

mass = 32 g .

NO!!!

Hydrogen chloride is a compound gas.

It readily dissolves in water to form hydrochloric acid. On dissolution it form the hydrogen ions and chloride ions in the aqueous solution.

Sodium symbol is 'Na'.

This comes from the Latin for sodium , which is 'NADIUM'.

Similary Potassium , symbol is 'K' . which comes from Latin for potassium , which is 'KALIUM'.

Historically the hydroxides of these metals where known as ' Caustic Soda' , and 'Caustic Potash'.

WRONG!!!! Sulphur is NOT a metal. Elemental sulphur is a non-metal.

YES!!! As the name 'sulphate' suggests, there is a sulphur component.

Ferrous sulphate has the formula FeSO4 .

This formula tells us that there are: -

1 atom of iron(Fe)

1 atom of sulphur (S)

4 atoms of oxygen (O4)

NB There is also a Ferric Sulphate ; formula ( Fe2(SO4)3)

This formula tells us that there are ;-

2 atoms of iron (Fe2)

3 atoms (3 x 1) of sulphur

12 atoms (3 x 4) of oxygen .

Francium is a GROUP 1 metallic ELEMENT.

It is a the bottom of Group 1 . Its partner elements in the Group are, lithium, sodium, potassium, rubidium, & caesium.

They all react with water with increasing violence. to the point of explositivity.

Francium is also Radio-Active, so you will not find it in any school lab. or even industrial labs. It is probably kept in a very special nuclear research lab. under very controlled conditions.

It was discovered by Marie Curie, in France, hence its name.

The respiritory system is you nose, throat, trachaea, and lungs.

You breath in (Inhale) through your nose. Here dust particles are removed .

Then it passes into the throat and tracheae, where it moistened and brought to body temperature. In the lungs the oxygen part of the air, brought to combine with the blood, and at the same time , carbon dioxide is released from the blood, back into the lungs. We then exhale(breath out) the carbon dioxide, together with the unreacted atmospheric gases, such as nitrogen.

An amount of carbon dioxide remains in the lungs in order to control the breathing rate.

Yes!! Of course it does.

Reason, it is an element, with its given number of protons.

Other metals and non-metals will be different because they have their own number of protons.

The number of protons defines an element.

Fluorine is a very poisonous yellow gas.

No, sulfur is a native element or mineral, not a fossil fuel.

Ionic.

NO!!!!

Bromine is a diatomic molecule.

The word ' diatomic' means 'two atoms.

So when you write ' Is bromine a diatomic atom '. you erroneously mean ' Is bromins a two-atom atom, which is a nonsense. Two or more atoms combined is a molecule.

Nitrogen- is the combining form for nitrogen. For instance, nitrogenous means containing or related to nitrogen.

The country named after the equator is Ecuador. The equator passes through northern Ecuador, giving the country its name.

The Depression era culture showed hope through initiatives like the New Deal which aimed to provide relief and recovery from economic hardships. On the other hand, everyday life was marked by challenges such as high unemployment, poverty, and struggles to make ends meet, reflected in cultural expressions like music, literature, and art that depicted these struggles.

The positive ions are written first .

The negative ions are written at the end.

NaOH

is Na^(+) positive ion so is written first.

'OH^(-)' is the negative ion so is written last.

Similarly with other hydroxides.

Similarly with acids.

H2SO4

2H^(+) is written first

SO4^(2-) is written last.

Fluorine is a non-metallic yellow poisonous gas .

The boiling point would rise as the pressure rises

The number of protons and electrons is always the same as the atomic number, which for chlorine is 17. The number of neutrons is always the mass number minus the atomic number, which for this isotope is also 17.

It is a Green/yellow gas at room temperature snd pressure.

Cpopper (I) Chloride other wise known as 'Cuprous Chloride.

There is the more common chloride , copper(II) chloride (CuCl2) , kknown as cupric chloride.

An oxygen atom contains 8 protons, 8 neutrons and 8 electrons.

From 8 protons and 8 neutrons ; 8 + 8 = 16 the atomic mass of oxygern.

The this the most common isotope of oxygen .