Elements and Compounds

Oxygen and Silicon are elements in their own right. They do NOT contain aanything else.

However, Silicon and Oxygen can combine to form the molecule 'Silicon Dioxide' ( SiO2 ), of which is sand on the beach is an impure form, mixed with oxides of other elements.

NO!!! 'Silucon is an element in its own right, and found in the Periodic Table as 'Si' , immediately below 'Carbon'.

Iron and Oxygen.

However, I have never heard of Fe3O3. Do you mean 'Fe2O3'. , which is the most common oxide of iron.

The symbol 'Fe' is from Latin for 'Iron' , which is 'Ferrum'.

The symbol 'O' is Oxygen.

Human Beings!!!! We will die without oxygen. This apples to all aninmal life.

Noble gases are the most unreactive family of elements due to their full outer electron shells, which makes them stable and less likely to react with other elements. They are very inert and rarely form chemical compounds with other elements.

Oh honey, the Representative Elements are just the main group elements on the periodic table. They're the popular kids at the chemistry party, hanging out in groups 1, 2, and 13-18. They're the ones who aren't trying too hard to be cool, just doing their thing and bonding with other elements to form compounds.

because when a sodium atom loses one electron it can bind with something else making it more stable. Also, when it loses one electron it becomes positive and atoms that are positive are more stable.

When ethene reacts with bromine in an aqueous solution of sodium chloride, the bromine adds across the carbon-carbon double bond in ethene through electrophilic addition. This reaction forms a dibromoethane product. The presence of sodium chloride in the aqueous solution helps to generate hypobromous acid, which is the active bromine species that reacts with ethene. This reaction is an example of halogenation of alkenes.

A ferrous metal can be an alloy contaIning iron. From Latin for Iron ' Ferrum.(Fe)'.

Pure Iron melts at 1538 oC ( 1811 K).

Alloys containing different amounts of iron will melt at different temperatures.

Before introducing delicate fish into an aquarium, it is important to ensure that the water parameters are within the ideal range. The ideal pH for most freshwater fish is between 6.5 and 7.5. Water hardness should typically be around 5-12 dGH for most freshwater fish. Nitrate levels should be kept below 40 ppm, nitrite levels should be at 0 ppm, and ammonia levels should also be at 0 ppm to ensure the health and survival of delicate fish.

Since there are only 26 letters in the alphabet and there are (currently) 111 known elements, therefore not every element can be represented by only 1 letter. Also some elements date back to antiquity and already have symbol names assigned by Alchemists, for instance, rather than being G, gold is Au for the Latin word aurum for shining dawn.

To find the percent composition of (NH4)2S, you first need to calculate the molar mass of the compound. The molar mass of (NH4)2S can be calculated as follows: (1 nitrogen atom * 14.01 g/mol) + (8 hydrogen atoms * 1.01 g/mol) + (1 sulfur atom * 32.06 g/mol) = 68.15 g/mol. Next, you can find the percent composition of each element by dividing the individual element's molar mass by the molar mass of the entire compound and multiplying by 100. The percent composition of (NH4)2S is approximately 20.56% nitrogen, 6.96% hydrogen, and 72.48% sulfur.

Yes, consuming too much magnesium can indeed cause loose bowels. Magnesium is a natural laxative and when taken in excess, it can draw water into the intestines, leading to diarrhea. It is important to follow recommended daily intake levels for magnesium to avoid gastrointestinal issues.

It burns.

Oh, dude, a pure compound refrigerant is like a single substance made up of only one type of molecule, no mix and match here. So, like, examples would be R-134a, which is used in air conditioners and refrigerators, and R-410A, which is also used for cooling stuff. It's like having a one-track mind, but for refrigerants.

Well, darling, the price of graphite can vary depending on the quality and quantity you're looking for. On average, though, you can expect to pay around $0.50 to $2 per gram. But hey, if you're feeling fancy, you might splurge on some high-grade stuff for a few bucks more.

Oh, dude, that grey deposit you're seeing is actually metallic platinum! When you mix platinum chloride with a zinc strip, a chemical reaction occurs that reduces the platinum ions to metallic platinum, which forms that grey deposit. It's like science magic, but with less rabbits and more test tubes.

Sodium isn't exactly mined. Sodium in its pure substance cannot be found freely in the environment. Sodium must go through a process of electrolysis (the process of shooting an electrical current through a substance) to break down the sodium compounds into pure sodium.

These sodium compounds are found in multiple places. They can be found in the ocean, coal/salt mines, and many other places. In fact about 2.6% of the Earths crust is made up of sodium compounds.

H2 Hydrogen. All gases , except the monatomic, Noble Gases, exist as polyatomic molecules.

H2 is two atoms of hydrogen

O2 is two atoms of oxygen

O3 is three atoms of oxygen (ozone)

N2 is two atoms nitrogen

Is the normal physico/chemical state these gases are found .

The Noble Gases , helium, neon, etc., existr in their normal state as SINGLE atoms, hence 'monatomic'.

Ha!!! Ha!!! Ha!!! Some one is having a silly joke with you!!!

Hydrogen oxide is WATER .

The formula for WATER is 'H2O' ; hydrogen and oxygen.

Wordl-wide and Scientificiallym water is WATER. It is NEVER referred to as hydrogen oxide.

However, by its chemical formula it could be described as : -

Hydrogen Oxide

Dihydrogen oxide

Hydrogen Monoxide

Dihydrogen Monoxide.

I think a recent US President came across one of these 'silly' names and thought it was a new and dangerous chemical. When all along it was just 'WATER'.

However, Hydrogen Peroxide (H2O2) - StructurHydrogen peroxidally 'H-O-O-H' is an oxidising agent

Carbon dioxide.

Remember the general rule for acids and carbonates.

Acid + Carbonate = Salt + Water + Carbon Dioxide.

e.g.

2HCl + CaCO3 = CaCl2(Salt) + H2O + CO2 ( using a mineral acid)

2CH3COOH + Na2CO3 = 2CH3COONa + H2O + CO2 ( using an organic acid).

Notice in both cases the gas , Carbon Dioxide (CO2) is liberated.

The last example above, can be conducted at homem using Vinegar(Acetic (Ethanoic) Acid ) and Washing soda(Soda crystals),Sodium Carbonate.

You will know it has reacted, by seeing 'effervescence/fizzing'.

H2O is the chemical formula for the water molecule, meaing each molecule of water contains two atoms of hydrogen and one atom of water.

Gold is an element and is symbolized by the letters "Au," standing for the Latin word for gold - aurum. Because gold is an element and one atom is one molecule, there is no further symbolism or formula for gold.

P4O10 is a solid element. It is a combination of phosphorus and oxygen.

Oh, dude, you're hitting me with that chemistry question! So, like, one mole of any element contains Avogadro's number of atoms, which is 6.022 x 10^23. In this case, you've got 4.5 moles of Li, so you just multiply that by Avogadro's number to get the total number of Li atoms. That's like... a lot of Li atoms, man.

H2

The chemical symbol for hydrogen is H, however hydrogen is one of the seven diatomic elements ( also including oxygen, bromine, fluorine, iodine, nitrogen, and chlorine), meaning that it is never found alone in nature, and always bonds with another hydrogen atom to form

H2.