Nuclear chemistry Questions and Answers

What are the differences between Nuclear Fission and Fusion?
Physical Chemistry
Nuclear chemistry
What are the differences between Nuclear Fission and Fusion?
"On July 16, 1945, a device that would result in rapid release of energy from a high-speed nuclear reaction was set up near Alamogordo, New Mexico, with nervous physicists watching from a safe distance. It worked perfectly; the explosion was tremendous. By that time Nazi Germany had been
defeated, but Japan was still fighting. Two more devices were prepared. After a warning, one was
exploded over the Japanese city of Hiroshima on August 6, 1945, and the other over Nagasaki 2
days later. The Japanese government surrendered and World War II came to an end."
Which of the following is the domain-specific phrase for rapid release of energy from a high-speed nuclear reaction?
Nuclear explosion
Nuclear burst
Nuclear discharge
Physical Chemistry
Nuclear chemistry
"On July 16, 1945, a device that would result in rapid release of energy from a high-speed nuclear reaction was set up near Alamogordo, New Mexico, with nervous physicists watching from a safe distance. It worked perfectly; the explosion was tremendous. By that time Nazi Germany had been defeated, but Japan was still fighting. Two more devices were prepared. After a warning, one was exploded over the Japanese city of Hiroshima on August 6, 1945, and the other over Nagasaki 2 days later. The Japanese government surrendered and World War II came to an end." Which of the following is the domain-specific phrase for rapid release of energy from a high-speed nuclear reaction? Nuclear explosion Nuclear burst Nuclear discharge
How much of a 25.0g sample of C remains after 100,000 years? The half life of 14C6 is 5730 years.
Physical Chemistry
Nuclear chemistry
How much of a 25.0g sample of C remains after 100,000 years? The half life of 14C6 is 5730 years.
Write balanced nuclear equations for the following:
a. Alpha decay of Thorium-290
b. Beta decay of Radium-222
Physical Chemistry
Nuclear chemistry
Write balanced nuclear equations for the following: a. Alpha decay of Thorium-290 b. Beta decay of Radium-222
How many protons and neutrons does iridium-192 contain?
protons:
neutrons:
Iridium-192 undergoes ß decay and then emits y radiation. Identify the stable daughter nuclide formed by the radioactive decay of iridium-192.
daughter nuclide:
Physical Chemistry
Nuclear chemistry
How many protons and neutrons does iridium-192 contain? protons: neutrons: Iridium-192 undergoes ß decay and then emits y radiation. Identify the stable daughter nuclide formed by the radioactive decay of iridium-192. daughter nuclide:
A certain shade of blue has a frequency of 7.19 x 10^14 Hz. What is the energy of exactly one photon of this light? Planck's constant is h = 6.626 x 10-34 J.s.
Physical Chemistry
Nuclear chemistry
A certain shade of blue has a frequency of 7.19 x 10^14 Hz. What is the energy of exactly one photon of this light? Planck's constant is h = 6.626 x 10-34 J.s.
The half life for the decay of carbon-14 is 5.73 × 10³ years.
Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 1.6 × 10³ Bq. The activity in a similar-sized sample of fresh wood is measured to be 2.7 x 10³ Bq. Calculate the age of the artifact. Round your answer to 2 significant digits.
Physical Chemistry
Nuclear chemistry
The half life for the decay of carbon-14 is 5.73 × 10³ years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 1.6 × 10³ Bq. The activity in a similar-sized sample of fresh wood is measured to be 2.7 x 10³ Bq. Calculate the age of the artifact. Round your answer to 2 significant digits.
Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 2.5 mg sample of bromine-88. Give your answer in becquerels and in curies. Round your answer to 2 significant digits.
Physical Chemistry
Nuclear chemistry
Bromine-88 is radioactive and has a half life of 16.3 seconds. Calculate the activity of a 2.5 mg sample of bromine-88. Give your answer in becquerels and in curies. Round your answer to 2 significant digits.
Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 7.7 mg sample of tin-129. Give your answer in becquerels and in curies.
Round your answer to 2 significant digits.
Physical Chemistry
Nuclear chemistry
Tin-129 is radioactive and has a half life of 2.23 minutes. Calculate the activity of a 7.7 mg sample of tin-129. Give your answer in becquerels and in curies. Round your answer to 2 significant digits.
The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 × 10¹0
years. Suppose nuclear chemical analysis shows that there is 0.223 mmol of strontium-87 for every 1.000 mmol of rubidium-87 in a certain sample of rock. Calculate
the age of the rock.
Round your answer to 2 significant digits.
Physical Chemistry
Nuclear chemistry
The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 × 10¹0 years. Suppose nuclear chemical analysis shows that there is 0.223 mmol of strontium-87 for every 1.000 mmol of rubidium-87 in a certain sample of rock. Calculate the age of the rock. Round your answer to 2 significant digits.
A sample of 4.2 g of copper (II) sulphate pentahydrate is dissolved and
made up to 500 cm³. A 50 cm³ portion is added to an excess of Kl. The
iodine formed required 18 cm³ of a 0.0950 mol dm-3 solution of sodium
thiosulphate for reduction.
Identify the correct statement(s)
(A) 1 Mole of Cu(II) consume 2 moles of Kl in the given procedure
(B) Percentage of Cu in the given sample is 26% (approximately)
(C) Mass of Cu in whole solution is 1.09 g (approximately)
(D) Reaction of Cu²+ with Kl result into the formation of metallic copper
and I
Physical Chemistry
Nuclear chemistry
A sample of 4.2 g of copper (II) sulphate pentahydrate is dissolved and made up to 500 cm³. A 50 cm³ portion is added to an excess of Kl. The iodine formed required 18 cm³ of a 0.0950 mol dm-3 solution of sodium thiosulphate for reduction. Identify the correct statement(s) (A) 1 Mole of Cu(II) consume 2 moles of Kl in the given procedure (B) Percentage of Cu in the given sample is 26% (approximately) (C) Mass of Cu in whole solution is 1.09 g (approximately) (D) Reaction of Cu²+ with Kl result into the formation of metallic copper and I
Iodine-131 is radioactive and has a half life of 8.04 days. What percentage of a sample would be left after 36.4 days?
Round your answer to 2 significant digits.
00
%
×10
x 3 ?
Physical Chemistry
Nuclear chemistry
Iodine-131 is radioactive and has a half life of 8.04 days. What percentage of a sample would be left after 36.4 days? Round your answer to 2 significant digits. 00 % ×10 x 3 ?
The potassium-38 nuclide radioactively decays by positron emission. Write a balanced nuclear chemical equation that describes this process.
X
Ś
Y
Physical Chemistry
Nuclear chemistry
The potassium-38 nuclide radioactively decays by positron emission. Write a balanced nuclear chemical equation that describes this process. X Ś Y
The half-life of silicon-32 is 710 years. If 40 grams is present now, how much will be
present in 700 years? (Round your answer to three decimal places.)
Physical Chemistry
Nuclear chemistry
The half-life of silicon-32 is 710 years. If 40 grams is present now, how much will be present in 700 years? (Round your answer to three decimal places.)
Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 5.2 mg sample of cesium-137. Give your answer in becquerels and in curies.
Round your answer to 2 significant digits.
Physical Chemistry
Nuclear chemistry
Cesium-137 is radioactive and has a half life of 30. years. Calculate the activity of a 5.2 mg sample of cesium-137. Give your answer in becquerels and in curies. Round your answer to 2 significant digits.
The carbon-11 nuclide radioactively decays by positron emission. Write a balanced nuclear chemical equation that describes this process.
Physical Chemistry
Nuclear chemistry
The carbon-11 nuclide radioactively decays by positron emission. Write a balanced nuclear chemical equation that describes this process.