How many alpha particles are emitted per second from 1 microgram of radium?

Q: The half-life of uranium-234 is approximately 25,000 years. How many undecayed nuclei remain after…

A: number of uranium atoms = 2.7 billion = 2.7×109 atoms half life of uranium = 25000 years =…

Q: Q6: 100 g of radioactive element X are placed in a sealed box. The half-life of this isotope of X is…

A: Disclaimer: Since you have posted two questions and no specific question number is mentioned, we…

Q: How many protons are in the nucleus of an antimony atom

A: An atom mainly consists of two parts: nucleus and electron orbits. In the nucleus, there are two…

Q: if a record sample has rate of 44100Hz, how many samples are required to capture 0.25s?

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Q: A radioactive material decays at a rate proportional to its amount . If the material has a half-life…

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Q: Cobalt-60 has a half-life of approximately 5 years. If 53g of the material was stored for 20 yers,…

A: mi=m0×2nmi: initial mass=53 kgm0=remaining mass n= number of periods

Q: 07:1 g of matter is converted into energy. Then how much energy is liberated?

A: Given data The mass of the matter is m = 1 g = 10-3 kg

Q: 4. Cobalt-60 has a half-life of approximately 5 years. If 53 g of the material was stored for 20…

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Q: How many protons, neutrons, and electrons are in a neutral atom of carbon-14?

A: Atomic number is given by number of protons present in an atom. Z = number of protons Mass number is…

Q: A 85.0-kg person is exposed to 389 rad of radiation. How many joules did this person absorb?

A: Given, Exposed radiation= 389 rad 1J/kg = 100 rad Mass (M)=85 kg Total energy absorbed (T.E)=? We…

Q: A radioactive material has a half-life of eight days. How long will it take for the material to be…

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Q: When gamma is 1.88, what is beta

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Q: The average US home uses 50,000,000 Joules of electrical energy per day. How many Joules will…

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Q: How many milliliters or liters are in a 3 inch pot

A: A 3 inch pot means a cubic pot with side 3 inch

Q: A sample of polonium-208 has a half-life of 2.898 years. What percent of polonium-208 remains after…

A: The half-life of a radioactive substance is the time required for a quantity to reduce to half of…

Q: How many moles of iron is in a 1kg sample of iron?

A: To determine No of moles in 1 kg sample of iron

Q: Iodine-131 has a half-life of 8 hours. If a solution containing 5 grams of iodine-131 is injected…

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Q: If you dispense 0.3 grams of aspirin, how many milligrams are you giving?

A: CONCEPT: Method of conversion of unit is used to find required value. 1 g=1000 mg where g is gram…

Q: If the annual (8 hours per day) cost to run a 400-W computer is ₱12,000.00, how much does the…

A: Given data:  Daily uses = 8 hours per day Power (P) = 400 W = 0.400 kW Total cost of running…

Q: What happens when one kilogram of uranium undergoes nuclear fission?

A: to find : what happens when 1 kg of Uranium undergoes nuclear fission

Q: An adult dose of cisatracurium, a skeletal muscle relaxant, is 3.4 mg.  If this drug is administered…

A: Given: Adult dose of cisatracurium: 3.4mg Body surface area of the child : 0.75 m2. The relation…

Q: If 60% of U.S. petroleum use goes for transportation, and 1% of this goes for buses, how much oil…

A: The amount of petroleum used in US is 60%, and x2 be the amount of petroleum used in buses 1%.The…

Q: How many microstates are created when 4 particles are distributed into 2 boxes?

A: Given data :     Number of particles (N) = 4     Number of boxes = 2 Formula :    Here, number of…

Q: A clinical technician finds that the activity of a sodium-24 sample is 1,024 cpm. What will be the…

A: Half life is defined as the time required for the radioactivity of a radioactive element to drop to…

Q: If 5g of iodine is in 250mL of iodine tincture, calculate the percentage(%w/v) of iodine in the…

A: Mass of iodine "m"= 5g  iodine in iodine tincture  "V"= 250ml

Q: The efficiency of a nuclear power plant is 35.4.0%. If 243.05.0 kW of power are produced by the…

A: The efficiency of a nuclear power plant is 35.4 %

Q: f the half-life of cesium-137 is 30 years, approximately how much time will be required to reduce a…

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Q: If the half-life of an isotope is two years, what fraction of the isotope remains after six years

A: Amount of radioactive material after time t is given by: N = N0*exp(-lambda*t) lambda = decay…

Q: How much voltage would be necessary to generate 10 amps of current in a circuit that has 5 ohms of…

A: Given data:  Current (I) = 10 A Resistance (R) = 5 Ω Required: Voltage (V)

Q: The half-life of a certain chemical in the human body for a healthy adult is approximately 3h. What…

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Q: The half life of 85Kr is 11 years. What is the mass of one millicurie of 85Kr? O 9.2 microgram O 30…

A: Given  Half life = 11year  T½= 11*365*24*60*60 sec =3.48*10⁸ sec I millicurie = 3.7*10⁷ /s  Lambda=…

Q: -3 gram is

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Q: The Neutron number N is the number of neutrons in the.

A: The neutron number is the number of the neutrons in the Nuclide or Nucleus.

Q: Substance X has a half-life of 10 years, if you start with 1000 grams, how much will be left after…

A: Given data:  Half life (t1/2)= 10 years Initial quantity (N0) = 1000 grams  Time (t)  = 100 years…

Q: What is the mass number of germanium?

A: Mass number : The total number of protons and neutrons  present in the nucleus is called the mass…

Q: What is the average power consumption in watts of an appliance that uses 0.75 kWh of energy in one…

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Q: A silver coin has a mass of 17.75 g. If the atomic mass of silver is 107.868 u, how many silver…

A: mass = 17.75 g Atomic mass of silver = 107.868 u Number of moles of silver present in the coin =…

Q: If the element Europium is 276 grams then how many atoms would it have?

A: Natoms=NAvamMmolar

Q: How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

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Q: A radioactive element has a half-life of 33 years. What is its continuous rate of decay?

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Q: If 10 kg of rock salt is placed in water, it dissolves at a rate proportional to theamount of salt…

A: Let the x be the amount of dissolved salt in the water. The undissolved amount of salt can be…

Q: The half-life of the radioactive isotope cesium-137 is 30.17 years. How long (in years) does it take…

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.