Radioactive isotopes may be used to _____ complex chemical processes.
Answers
Answer: radioactive isotopes may be used to Trace complex chemical processes.
Final answer:
Radioactive isotopes can be used to study complex chemical processes, such as determining the age of ancient artifacts using carbon dating.
Explanation:
Radioactive isotopes can be used to study complex chemical processes. This is because some isotopes emit radiation that can be detected and measured, allowing scientists to track the movement and transformations of chemicals in a reaction. For example, carbon-14 is a radioactive isotope that can be used to determine the age of ancient artifacts through a process called carbon dating. By measuring the amount of carbon-14 remaining in an object, scientists can calculate how long it has been since the carbon-14 was last replenished.
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Related Questions
Base your answers to questions 76 through 79 on the information below and on your knowledge of chemistry.During a laboratory activity, a student places 25.0 mL of HCl(aq) of unknown concentration into a flask. The student adds four drops of phenolphthalein to the solution in the flask. The solution is titrated with 0.150 M KOH(aq) until the solution appears faint pink. The volume of KOH (aq) added is 18.5 mL.76 What number of significant figures is used to express the concentration of the KOH (aq)? 77 Complete the equation in your answer booklet for the neutralization reaction that occurs during the titration. HCl + KOH--> ________________78 Determine the concentration of the HCl(aq) solution, using the titration data. 79 Describe one laboratory safety procedure that should be used if a drop of the KOH(aq) is spilled on the arm of the student.
How would a solution that is labeled 5.0 molar be similar to one labeled 5.0 molal?
What type of slide did you make using the letter 'e' in the lab?
What is the electron configuration of helium
Answers
Answer:
false
Explanation:
The temperature of the balloon will decrease.
The gas atoms will strike the sides of the balloon more often.
The gas inside the balloon will change into a liquid.
Answers
Answer: The gas atoms will strike the sides of the balloon more often.
Explanation:
Kinetic energy is the energy possessed by an object by virtue of its motion.
Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:
K= kinetic energy
R= gas constant
T= temperature
From above, it is visible that kinetic energy is directly related to the temperature of the system.
So if average kinetic energy of the system increases , the speed of the molecules will be more and hence the gas atoms will strike the sides of the balloon more often.
Hope I helped!
B. 1s2 2s2 2p6 3s2 3p3
C. 1s2 2s2 2p6 3s1 3p3
D. 1s2 2s2 2p6 3s2 2d3
Answers
Answer:
1s2 2s2 2p6 3s2 3p2
Explanation:
you're welcome
B. Exothermic reactions absorb heat.
C. There are no changes in heat during either reaction.
D. Endothermic reactions release heat.
Answers
answer D
Explanation:hope thhis helped
12.3 mol of NO reacts with ______ mol of ammonia
5.87 mol of NO yields _______ mol nitrogen
Answers
Final answer:
12.3 moles of nitrogen oxide (NO) react with 8.2 moles of ammonia (NH3) in the given reaction. The reaction of 5.87 moles of NO yields 4.89 moles of nitrogen (N2).
Explanation:
The overall reaction equation represents an ideal stoichiometric ratio where 4 moles of ammonia (NH3) react with 6 moles of nitrogen oxide (NO) to produce 5 moles of nitrogen (N2) and 6 moles of water (H2O). Let's work with this ratio to fill in the blanks of your question.
Given that 6 moles of NO react with 4 moles of NH3, we can set up a ratio to find the unknown quantity of NH3 that reacts with 12.3 moles of NO: (4 NH3 / 6 NO) x 12.3 NO = 8.2 moles of NH3
Similarly, 5 moles of nitrogen are produced per 6 moles of NO reacted, so we can find out how much nitrogen is produced from 5.87 moles of NO: (5 N2 / 6 NO) x 5.87 NO = 4.89 moles of nitrogen.
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Final answer:
12.3 moles of NO reacts with 8.2 moles of Ammonia. 5.87 moles of NO yields 4.89 moles of Nitrogen.
Explanation:
In these types of problems, we use the concept of mole ratios from the balanced chemical equation. According to the reaction, 4 moles of NH3 react with 6 moles of NO to yield 5 moles of N2. Therefore, for 12.3 moles of NO, we apply the ratio 4/6 to determine that it reacts with 8.2 moles of NH3.
Similarly, 5.87 moles of NO, based on the ratio 5/6, yields 4.89 moles of N2. So, these are the missing quantities for the reaction.
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A) Pentanoid acid
B) Pentanal
C) Pentan-2-one
D) Propanoic acid and ethanoic acid
Answers
Answer:
C) Pentan-2-one
Explanation:
The product of the reaction of pentan-2-ol with acidified potassium dichromate is pentan-2-one.
Pentan-2-ol is a secondary alcohol, and secondary alcohols are oxidized to ketones by acidified potassium dichromate. The reaction is as follows:
CH3CH(OH)CH3 + K2Cr2O7 + H2SO4 → CH3COCH3 + Cr2(SO4)3 + K2SO4 + H2O
Propanoic and ethanoic acids are not products of this reaction.
Therefore, the answer is (C).
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