To understand the behavior of a substance on being exposed to air, let us first recall the definition of air or what air is. Air is a mixture of various gases such as 78% of nitrogen, 21% of oxygen, and 1% of o
Question: When the intensity of the appropriate stimulus was increased, the amplitude of the response a. was zero. b. increased. c. decreased. d. did not change. Stimuli: A stimulus is a substance that can evoke a reaction in...
oxygen As oxidation-reduction occurs ___ released that is used to make ATP. A. protons B. energy C. matter D. phosphate Do reduced or oxidized forms of carbon carry more energy? A chemical process during which a substance gains electrons and energy is called: a) oxidation b) oxidative...
chemical processing, and incineration may all produce direct exposure to, and inhalation of, dangerous substances. One such common hazard is exposure to lead and other toxic metals. Another example of hazardous substance encountered in electronic recycling is mercury, which can be a dangerous neurotoxi...
that cannot be broken down into chemically simpler components is an element. ... A substance that can be broken down into chemically simpler components (because it has more than one element) is a compound. For example, water is a compound composed of the elements hydrogen and oxygen. ...
a When a Gram-positive cell is exposed to lysozyme, it will lose the cell wall completely and become a protoplast. A Gram-negative cell exposed to the same substance loses it peptidoglycan but retains its outer membrane, leaving a less fragile but nevertheless weakened spheroplast. 当一个革兰...
The nurse at a substance abuse center answers the phone. A probation officer asks if a client is in treatment. The nurse responds, "No, the client you’re looking for isn’t here. " Which of the following statements best describes the nurse’s response A. Correct because she didn’t gi...
Head injury, brain tumors, and some infections—such as HIV, tuberculosis, syphilis, and herpes—can damage the lining or substance of the brain, resulting in memory loss. Sleep deprivation, deficiencies in vitamins B1 and B12, and normal aging are also common culprits.4-6 Mild cognitiv...
Glucose when reduced with HI and red Phosphorus gives :(A) N hexane(B) N heptane(C) N octane(D) N pentane. Ans: Hint: Hydrogen iodide (HI) is a hydrogen halide and a diatomic molecule. Hydroiodic acid, or hydriodic acid, is a powerful acid made up ...
As used herein, the "critical point" is the transition point at which the liquid and gaseous states of a substance merge into each other and represents the combination of the critical temperature and critical pressure for a given substance. The "critical temperature", as used herein, is ...