Exams & Certification
How many protons neutrons and electrons does neon have? neon atomic number is 10 The Correct Answer and Explanation is: Neon has 10 protons, 10 electrons, and 10 neutrons in its most stable isotope, neon-20. Explanation: Other Isotopes: Neon exists in several isotopes, such as neon-21 and neon-22. These isotopes have the same number of […]
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Decomposition reaction of KClO3 can be used to produce an oxygen gas. (The other reaction product is solid KCl). a. Write a balanced chemical equation for this reaction. b. What mass of KClO3 must be decomposed to produce 126 L of oxygen gas at 133oC and 0.880 atm? The Correct Answer and Explanation is: To
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After leaving the third ventricle. CSF travels directly to the subarachnoid space. True False The correct answer and explanation is: The correct answer is False. Cerebrospinal fluid (CSF) does not directly travel from the third ventricle to the subarachnoid space. After being produced in the choroid plexus of the ventricles, CSF flows through a series
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Oxygen gas (O2) can be obtained from the decomposition reaction of potassium chlorate (KClO3): 2KClO3(s) → 2KCl(s) + 3O2(g) a) How many moles of O2 can be produced by the decomposition of 32.8 g KClO3? b) How many grams of KClO3 are required to decompose to produce 50.0 g O2 The Correct Answer and Explanation
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When skeletal muscle lacks sufficient oxygen there is an increased blood concentration of options: a) pyruvic acid. b) glucose. c) ATP. d) None of the above. The correct answer and explanation is: The correct answer is a) pyruvic acid. When skeletal muscle experiences insufficient oxygen, it results in anaerobic metabolism, primarily relying on glycolysis to
The SI base units of temperature and mass, respectively, are Select one: Celsius and milligram b. degree and gram kelvin and kilogram d. degree and kilogram The Correct Answer and Explanation is: The correct answer is c. kelvin and kilogram. The International System of Units, abbreviated as SI, is the modern standard for measurement used in
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Skinner offered three reasons why punishments should not be administered: they only work temporarily, they create conditioned stimuli that lead to _, and they reinforce escape from the conditioned situation in the future. a. negative emotional reactions b. neutral emotional reactions c. no emotional reaction d. positive emotional reactions The correct answer and explanation is:
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Who proposed the theory of evolution by acquired characteristics? options: a) Charles Darwin b) Jean-Baptiste Lamarck c) Charles Lyell and Thomas Malthus d) Stanley Miller and Charles Darwin The correct answer and explanation is: The correct answer is b) Jean-Baptiste Lamarck. Jean-Baptiste Lamarck, a French naturalist, proposed the theory of evolution by acquired characteristics in
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Establishing the Standards The inch: Place your thumb on a sheet of paper and record its width with two pencil marks. This represents your inch. Use a measuring tape with inch markings to draw a 1-inch long line next to the marks you made in a). Make sure the line is exactly 1 inch long.
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A paper clip is just over 4 cm long. How many paper clips like this can be made from a straight piece of wire 10 meters long? The correct answer and explanation is: To solve this problem, we first need to convert the given lengths into the same units. The wire is 10 meters long,
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