Subtract the value of the second pair from the value of the first pair, or 18 - 8 = 10. Our determinant equals 10. Once again, determine the sign dictated by the location of the element you eliminated. In this case, the sign is +, so we would use 10. Next, let's find the cofactor of 5.
Answer: The outermost zone of a flame is the hottest zone. Due to this, goldsmith uses the outermost zone of a flame for melting gold and silver. Question: 11. In an experiment 4.5 kg of a fuel was completely burnt.
This is called the Lower Explosive Limit (LEL) of that gas or vapor. It is sometimes called the Lower Flammable Limit (LFL). The LEL is different for every gas. For most CHCs, this minimum concentration varies from about 0.5% to about 15% by volume in air.This concentration represents 100% on the Delphian system. Some combustible gases are lighter than air, some are heavier.t is sometimes called the Lower Flammable Limit (LFL). The LEL is different for every gas. For most CHCs, this minimum concentration varies from about 0.5% to about 15% by volume in air. This concentration represents 100% on the Delphian system.