Carbon burns in the presence of oxygen to give carbon dioxide. which chemical equation describes this reaction?
1(carbon + oxygen + carbon dioxide
2(carbon + oxygen → carbon dioxide
3(carbon dioxide → carbon + oxygen
4(carbon dioxide + carbon → oxygen

The correct answer is Option 2.

Explanation:

When carbon burns in the presence of oxygen, it produces a gas known as carbon dioxide.

To write a chemical equation, we must follow some of the rules:

The reactants are written on the left side of the direction arrow.A '+' sign is written between the reactants, if more than one reactant is present.An arrow is added after all the reactants are written.The products are written on the right side of the direction arrow.A '+' sign is written between the products, if more than one reactant is present.

Here, carbon and oxygen are the reactants and carbon dioxide is the product.

Thus, the chemical equation representing this reaction follows:

Hence, the correct answer is Option 2.

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.