What is the voltage of a galvanic cell made with silver (ag) and nickel (ni)?

Answer:

A mixture is physical, while a compound is chemical.

Explanation:

A mixture is a combination of two or more substances that are physically mixed together. The components of a mixture can be easily separated from one another by physical means, such as filtration or evaporation. The substances in a mixture retain their individual properties and do not chemically react with one another. For example, a mixture of salt and sand can be separated by dissolving the salt in water and then filtering the mixture to remove the sand particles. Each component of the mixture retains its own properties throughout the process.  On the other hand, a compound is a substance that is made up of two or more different elements chemically combined in fixed proportions. The components of a compound are held together by chemical bonds, resulting in a new substance with different properties from the original elements. Compounds cannot be easily separated into their individual components by physical means. For example, water (H2O) is a compound made up of hydrogen and oxygen. The elements hydrogen and oxygen chemically react to form water, and it is not possible to separate the hydrogen and oxygen in water by physical means alone.  In summary, a mixture is a physical combination of substances that can be easily separated, while a compound is a chemical combination of elements that cannot be easily separated. Mixture components retain their individual properties, while compounds have properties different from their component elements.

Answer:

The answer to your question is 2 moles of Carbon

Explanation:

Carbon-12 means it has a molecular mass of 12g / mol. Mol is defined as the number of grams of an atom in one mol.

To solve this problem, we use proportions

                                    12 g of Carbon ---------------- 1 mol of Carbon

                                     24 g of Carbon --------------   x

                                      x = ( 24 g x 1 mol ) / 12 g

                                      x = 24 / 12

                                     x = 2 mol of Carbon

Answer:

2 moles

Explanation:

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Final answer:

Among the given options, burning a magnesium ribbon results in a chemical change. It is because the burning process changes magnesium into a new substance, magnesium oxide.

Explanation:

The process that results in a chemical change among the given options is D) burning magnesium ribbon. A chemical change is a process where one or more substances are altered into one or more new and different substances. In the case of burning magnesium ribbon, the magnesium reacts with the oxygen in the air to create a new substance, magnesium oxide. This is a characteristic of a chemical change, which is very different from physical changes caused by tearing tin foil, melting an iron bar, or crushing an aluminum can. These actions alter the physical state or shape of the matter, but not its internal structure or chemical composition.

Learn more about Chemical Change here:

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