A red substance is found at a crime scene. A test is performed on the substance in which a liquid is sprayed on the unknown red Sunsence. The reaction produces a blue glow that lasts for 30 seconds when the room is darkeried What test was performed?

Hemastix

A presumptive color test that detects blood. It's typically used to test for blood in urine samples. It's a plastic strip with TMB (tetramethylbenzidine) and hydrogen peroxide. The blood is picked up with a wet swab and placed on the pad. It starts at yellow, but if there's blood, it will turn green or blue-green

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

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