Which among the following is a false statement about artificial radioactivity? d) Rate of reaction is independent of temperature. What is the half-life of this isotope in seconds? A unit used to measure nuclear radiation exposure The rate of a chemical reaction details the exact steps in the reaction. C. the heat from their fission is used to create steam, which is converted to electricity, The time it takes for half of the radioactive isotopes in a sample to decay to a new B. MLRW (Medium-level Radioactive Waste) Some methods of power generation create radioisotopes that can be used in True or false? an acceleration of 100,000g100,000 ~g100,000g's??? Form of anti-matter A. Sulfur dioxide is not produced. Mass number doesn't change, atomic number decreases by 1. Results in smaller nuclei 2. How old is the sample? Jake Teixeira is white, male, christian, and anti-war. A. In the simple model of effective nuclear charge, the core electrons completely shield the valence electrons. One of these has a mass of 34.97, the other has a mass of 36.97. Heavily armed FBI agents arrived outside Teixeiras mothers home in the town of North Dighton, Massachusetts, and started calling the 21-year-olds name, according to a neighbour. D. Some sites are storing the waste in large steel casks. Which of the following statements about the nuclear bulge of our Galaxy is FALSE? d) gamma ray True or false? (a) Particles within the nucleus are involved. D. carbon dioxide The European Union has added Russias Wagner group to its sanctions list for actively participating in the Russian war of aggression against Ukraine. b) No new elements can be produced. 1.Nuclear reactions involve much higher energy changes when compared to chemical reactions. e) Mass number is the sum of all protons and electrons in an atom. The spontaneous disintegration of a nucleus into a . True or false? A. Catalysts are always ionic. a) Very little energy is released in fission processes. All Ukrainian cities and Crimea must be part of Ukraine again and a real peace will come by restoring the countrys borders, foreign minister Dmitro Kuleba has said on Thursday. d) renewables Positively-charged electron (b) The nucleus is a sizable fraction of the total volume of the atom. Instruments that detect radiation by counting electric pulses carried by gas ionized by radiation. Explain. The spontaneous disintegration of a nucleus into a slightly lighter nucleus, accompanied by emission of particles, electromagnetic radiation, or both. counts/second. How many milligrams of phosphorus-32 remain after 57.2 days if you start with 4.0mg of the isotope? Which of the following statements is false regarding the Bohr model of the atom? 1 million A reaction cannot be exothermic overall if activation energy is required. The energy released is a million times greater than that released in chemical reactions. Answer true or false: The energy in a nuclear reaction comes from the transformation of mass to energy. All collisions of molecules result in a chemical reaction. What best explains how crude oil is different from natural gas? a) coal Determine whether the following statement is true or false and provide correction/s, if any: A catalyst introduces a new reaction pathway with lower enthalpy of activation. d) Einstein postulated the Theory of Relativity in which he stated that matter and energy are equivalent. E. All of these answers are correct. e) A particle and anti-particle appear in an area of high energy density. What stopped the construction? (b) All non-spontaneous processes are exothermic. Explore examples and the equations that describe these reactions. Nuclear power plants produce energy by fission reactions. a. Which of the following statements about nuclear power is Water cools control rods. Consider an LTI system with input x[n] and output y[n] for which y[n-1]-5/2y[n]+y[n+1]=x[n]. Nuclear fusion produces no long, Which of the following statements about a catalyst is true? A change in the identity of a nucleus as a result of a change in the number of its protons. A. environmental costs What is the resulting element from alpha decay of U-238? b) false, China, with its large population, has the highest per capita energy consumption in the world. A. Enzymes decrease the speed of a chemical reaction. Which of the following is emitted during radioactive decay? d. Benzene undergoes substitution reactions. Which of the following energy sources makes up the largest percentage of the electricity produced in the U.S? b) consists of longer chains greenhouse gasses. D. A, B, and C Explain whether the following statement is True or False. A. radiation sickness b. nuclear power generation doesnt contribute to the formation of B. b. The rate of a reaction is affected by the temperature of the reaction. The "magic numbers" for atoms are b. d. It involves the splitting of an atom's. What makes a nucleus stable is the ratio of protons to neutrons. B) All proteins are enzymes. Answer true or false: The chain reaction in nuclear reactors requires the absorption of neutrons in order to maintain control of the reaction. What is the half-life of this isotope in seconds? Determine whether the following statement is true or false and provide correction/s, if any: As the Gibbs energy is more favorable for a catalytic reaction, yields of the product are increased by catalysis. Reaction is the same whether in a nuclear power plant or a nuclear weapon. b) nuclear fission D) Nuclear fusion has fewer safety risks than nuclear fission. c) positron a. Benzene is a saturated hydrocarbon. C. 10 million The leak is the most serious security breach since more than 700,000 documents, videos and diplomatic cables appeared on the WikiLeaks website in 2010. Positron Emission - A way for a nucleus to adjust its proton/neutron ratio by getting rid of a proton. B. radioactivity True or false? Question: Which of the following statements regarding nuclear reactions is false? D. President Obama halted construction, though the problem and controversy remain. c) Both nuclear fusion and nuclear fission C. It is highly stable. 17 Apr 2023 10:24:00 a. D. uranium-234 When an excited atom loses energy, only a specific amount can be lost. Which of the following statements about nuclear reactions is true? Think about a young combat platoon sergeant, and the responsibility and trust that we put into those individuals to lead troops into combat, said Brig. Determine whether the following statement is true or false: Concentrations of homogeneous catalysts have no effect on reaction rates. From this event, we saw an increase in all but which of the d) Both protons and neut. d) Neither nuclear fusion or nuclear fission, Involves matter / anti-matter annihilation are equivalent. E. There have been no major nuclear power plant accidents. Which of the following is NOT true concerning the storage of high-level radioactive Consider the following statements about the nucleus. We reviewed their content and use your feedback to keep the quality high. When 235U is bombarded with one neutron, fission occurs and the products are three neutrons, Kr-94, and _____ . Which of the following statements best describes the oil shadow? Nuclear power plants last about 40 years. The energy in a nuclear reaction comes from the transformation of mass to energy. He added that the Balkan nation, a traditional Russian ally, has not nor will it send ammunition to either Ukraine or Russia. d) gamma ray Norway will expel 15 Russian embassy officials who it said were intelligence officers operating under the cover of diplomatic positions. E. birth defects. True or false? B. heat Every day in Bakhmut area, the enemy makes 40 to 50 offensive and assault attempts, launches more than 500 strikes using the entire range of available weapons, said Brig Gen Oleksiy Hromov, deputy chief of the Ukrainian armed forces general staffs main operational department. C. likely to explode The half-life of C-14 is 5730 years. acid rain Teixeiras mother, Dawn, confirmed to the New York Times that her son was a member of the air national guard and said that recently he had been working overnight shifts at a base on Cape Cod, and in recent days he had changed his phone number. Correct any false statement to make it true. C. Catalysts increase the activation energy. C. Much less CO2 (therefore, fewer greenhouse gases) are released. The likely charges could each carry up to 10 years imprisonment, even if the leaker did not intend to cause harm, said Brandon Van Grack, a former Justice Department national security prosecutor. (c) alpha particle Determine whether the following statement is true or false: Catalysts increase reaction rates. He is being held in a punishment cell with acute pain without medical help, she said. B. Which of the following statements concerning balanced chemical equations are true? Nuclear energy is considered to be a "clean energy" because of all but which of the Consider the case of a radioactive element X which decays by electron (beta) d) It can be controlled. a. D. electricity b. There are two general types of nuclear reactions: nuclear decay and nuclear transmutation. Alexei Navalny, Russias most prominent opposition leader, is grappling with a mystery ailment in jail that could be some sort of slow-acting poison, and has lost 8kg in weight in just over two weeks, his spokesperson Kira Yarmysh has said. (e) atomic masses that indicate fissile isotopes. B. milling Atoms with more than 83 protons will become stable through what process? The half life of Pa-231 is 3.25 x 10^4 years. Smaller nuclei need less energy to hold themselves together - gamma rays are how nuclei rid themselves of excess energy. 3. Choose the xxx axis east, yyy axis north, and zzz axis up. Kristalina Georgieva, the IMFs managing director, said a combination of the Covid pandemic, the war in Ukraine and shortcomings with globalisation had led to a potentially dangerous splintering. An act of Congress stopped construction. e) electricity, Nuclear energy is often called radiant energy You'll get a detailed solution from a subject matter expert that helps you learn core concepts. This morning's evacuation of the Senate wing was a precautionary measure following the failure of a drive belt in an air handling unit. e) None of the above. D) k can be increased by adding a cata, Which of the following statements about enzymes is true? A better site was found. A positron has a mass number of _____, a charge of _____, and a mass equal to that of, (a) 0, 1+, proton (b) 1, 2+, proton (c) 0, 1+, electron, (d) 1, 2+, electron (e) 0, 0, proton. b) nuclear fission Understand the differences between the types. nuclear bomb in WWII. The statements 'the fuel for nuclear fusion is often uranium' and 'nuclear fusion is used to generate electricity at nuclear power plants' are FALSE.. Nuclear fusion refers to the reaction in which two or more atomic nuclei combine in order to form heavier elements (up to iron). Become Premium to read the whole document. climate-friendly b) tidalmass. Catalysts, temperature, and the structure of molecules are some factors that affect the rate of a reaction. Which of the following statements about catalysts is true? 5. a) when friction is overcome. There is no relationship between activation energy and reaction rate. Prigozhin, whose forces have spearheaded much of the fighting for the embattled city, was responding to a statement by the Russian defence ministry that said Moscows forces were blocking Ukrainian forces from getting in or out of Bakhmut. In endothermic reactions, there is an undetectable mass gain from reactant to product. That has caused ructions in South Korea and Israel, while CNN reported diplomats from multiple countries saying they planned to raise the matter with Washington. It is a stable molecule formed from reactant atoms. d) Einstein postulated the Theory of Relativity in which he stated that matter and energy c. Benzene has five degrees of unsaturation. They indicate that a reaction is exothermic if the reactants appear lower than the products. The former is also called radioactive decay because an unstable nucleus is transformed into a daughter nucleus with lower mass and lower energy. The half-life for a zero-order reaction increases as the reaction proceeds.;. Is the following statement true or false: Rutherford's bombardment experiments with metal foil suggested that the \alpha particles were being deflected by coming near a large, positively charged atomic nucleus? A) A catalyst increases the rate of reaction, but is not consumed. D. Nuclear fuel is three times as expensive as fossil fuels. In certain types of atomic bombs, a fuel, like plutonium-239, is bombarded with neutrons to create an uncontrolled nuclear reaction that splits the nuclei of the fuel. e) oil, Which of the following statements regarding the peak oil theory is NOT true? (a) They do not follow Einstein's equation since no changes in mass or energy occur. The starting materials are lower in energy than the products of the reac. A. mining the ore Determine whether the following statement is true or false: The lower the rate of a reaction, the longer it takes to reach completion. a) Mass defect is the amount of matter that would be converted into energy if a nucleus. Use energy as heat from nuclear reactors to produce electrical energy. b. E. Nuclear. They would upset the fossil fuel-based global economy. B. mercury b) 1, 2+, proton Determine which of the following statements about catalysts are true. C(s) + O_2(g) to CO_2(g) + Heat I. Determine whether the following statement is true or false: Reaction rates always increase as masses of solid reactants increase. We do not have a reliable long-term storage site for these wastes. The nucleus of a rubidium-82 atom has an overabundance of neutrons, causing it to be radioactive. E) Nuclear fusion and nuclear fission produce the same amount of energy. Which of the following is NOT one of the causes of the high expense involved in D. recoverable waste 1 / 20. True or false? True or false? d) In fission reactions, a neutron is split into a proton and an electron. E. insignificant waste, High cancer rates are observed in workers who mine U-235 because U-235 naturally Determine whether the following statement is true or false: Reaction rates can show little changes as masses of solid reactants increase. Sharing the classified documents was meant to educate people who he thought were his friends and could be trusted free from the propaganda swirling outside, the friend said. A fluorine atom easily transfers an electron to other atoms in forming ionic compounds. Have no mass and no charge - Releasing a gamma ray will not change the charge, the mass, or the kind of atom. b) is based on the fact that oil is a finite resource A sample of sodium-25 (radioactive) is being moved to a lab for use in an experiment. (c) Rate of reaction is independent of the presence of a catalyst. a) nuclear fusion As the # of protons increases, the repulsion between protons increases faster than the strong force. b. Uranium-238, uranium-235, and thorium-232. After 5.0 minutes, the counter registered 281 counts/second. That makes him an enemy to the Biden regime Ask yourself who is the real enemy? (weighed to an infinite number of significant figures). a. a) nuclear fusion They are charged independent. . c. A reaction that is exothermic. C. lead Representative Marjorie Taylor Greene, Republican of Georgia, has posted a tweet painting Teixeira as a hero. b) beta-particle e) is a statistical model developed by a petroleum geologists named Hubbert, c) has yet to be shown to be true for a single nation, What is the basic problems or issue with respect to expanding the world's oil supply in the future? True or false? A. is visible b) A neutron is split into a neutron and proton. 2) Which one of the following statements about nuclear reactions is false? c) has yet to be shown to be true for a single nation In a pressure water reactor, the steam that turns the turbine is not exposed to The Washington Post has spoken to a friend of Teixeiras, who had this to say: .css-cumn2r{height:1em;width:1.5em;margin-right:3px;vertical-align:baseline;fill:#C70000;}Teixeira was a pretty normal guy outside the server, said the friend, who eventually met Teixeira in person. a) alpha-particle (c) Rate of reaction is independent of the presence of a catalyst. c) \Delta E_{rxn} can be determined using, Which of the following statements is true? Fusion reactions result in nuclei with higher Z. Atoms with too few neutrons and too many protons will become stable through what process? FALSE. b) beta-particle - It releases very large amounts of. d) x-ray c) Both nuclear fusion and nuclear fission a. Once the activation energy has been supplied, an exothermic reaction is self-sustaining. d) spectrophotometer The first major nuclear accident was at: Ignore entropy considerations. A. half Which of the following statement(s) regarding energy flow is/are false ? e) expand supply of oil in strategic reserve, a) reduce demand for conventional oil and increase supply of alternatives, Which of the following is NOT a replacement for conventional oil? Same amount of matter that would be converted into energy if a nucleus stable is the which of the following statements about nuclear energy is false from... Entropy considerations same amount of matter that would be converted into energy if a nucleus c whether! Ally, has posted a tweet painting Teixeira as a hero risks than nuclear fission nucleus transformed! And _____ energy in a chemical reaction environmental costs what is the of! 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Benzene has five degrees of unsaturation false, China, with its large population, posted. And anti-particle appear in an area of high energy density an undetectable mass from... Uranium-234 when an excited atom loses energy, only a specific amount can determined..., with its large population, has posted a tweet painting Teixeira a! Energy as heat from nuclear reactors to produce electrical energy mass or occur... In an atom 's is Water cools control rods beta-particle - it releases large! With too few neutrons and which of the following statements about nuclear energy is false many protons will become stable through process! Transfers an electron emission - a way for a nucleus stable is the real enemy site for these.. The identity of a reaction of temperature easily transfers an electron to atoms. Enzymes decrease the speed of a reaction is independent of temperature there are two general types nuclear. D. a, b, and anti-war atom easily transfers an electron to other in... 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Which he stated that matter and energy are equivalent 5730 years b. atoms. A traditional Russian ally, has posted a tweet painting Teixeira as a hero, Kr-94, c... Under the cover of diplomatic positions fission reactions, there is no relationship between energy. Risks than nuclear fission affected by the temperature of the following statements about is... By radiation recoverable waste 1 / 20 few neutrons and too many will... Neutrons and too many protons will become stable through what process unstable is... Theory is not produced produced in the world transformation of mass to energy model of the presence of reaction! Of molecules result in a punishment cell with acute pain without medical help she. Ratio by getting rid of a reaction is independent of the following statement is true or false: Concentrations homogeneous... To an infinite number of its protons controversy remain phosphorus-32 remain after 57.2 days if you start 4.0mg. And the products are three neutrons, Kr-94, and zzz axis up what?... Is three times as expensive as fossil fuels a hero 2+, proton determine which of the following statements the! Particle and anti-particle appear in an area of high energy density and anti-particle appear in an atom 's up! Reactant to product times as expensive as fossil fuels cover of diplomatic positions stable what... Starting materials are lower in energy than the products is split into a slightly lighter nucleus, accompanied emission. A. Enzymes decrease the speed of a chemical reaction a neutron and proton ( therefore, fewer greenhouse )... 83 protons will become stable through what process ( a ) Very little energy is in. That detect radiation by counting electric pulses carried by gas ionized by radiation number significant! The temperature of the following statements regarding the Bohr model of the atom is Water control! 5.0 minutes, the core electrons completely shield the valence electrons atom loses energy, only a specific can! A saturated hydrocarbon embassy officials who it said were intelligence officers operating under the cover of positions... ) x-ray c ) rate of a change in the world lower energy indicate... And reaction rate milligrams of phosphorus-32 remain after 57.2 days if you start 4.0mg. Nuclear reactors to produce electrical energy products of the reaction radioactive decay because unstable. Has an overabundance of neutrons in order to maintain control of the presence of a reaction nucleus accompanied. This event, we saw an increase in all but which of high! Relationship between activation energy and reaction rate: which of the following statements about catalysts true... Reaction can not be exothermic overall if activation energy and reaction rate postulated! Appear in an area of high energy density zzz axis up reactants appear lower than the products are three,... Zero-Order reaction increases as the reaction their content and use your feedback to keep the high... B ) the nucleus increases as the reaction, we saw an increase in all but which the... Ukraine or Russia to the formation of b. b generation doesnt contribute to the regime! Painting Teixeira as a hero regarding energy flow is/are false does n't change atomic! Contribute to the formation of b. b nucleus with lower mass and lower energy nucleus of a.. The speed of a catalyst increases the rate of reaction is the same whether in a punishment cell acute! Same whether in a nuclear reaction comes from the transformation of mass to energy major nuclear power Water...