Explain the rate of decrease to 4 disintegrations per minute

Assignment Help Chemistry
Reference no: EM13564456

Radioactive carbon-14 has a half life of 5730 years. Suppouse a peice of wood has a decay rate of 15 disingrations per minute. How many years would it taker for the rate of decrease to 4 disintegrations per minute?

Reference no: EM13564456

Questions Cloud

Why any rational person in his situation : Why was he correct to do what he did, and why any rational person in his situation would do the same.
Assuming he moves the weights at constant speed : A weight lifter lifts a 320 N set of weights from ground level to a position over his head, a verticaldistance of 1.85 m. How much work doesthe weight lifter do, assuming he moves the weights at constant speed?
Estimate what emf is induced in the loop at that instant : An elastic conducting material is stretched into a circularloop of 11.0 cm radius. It is placedwith its plane perpendicular to a uniform 0.600 T magnetic field. What emf is induced in the loop at that instant
Evaluate the change in enthalpy for the sodium carbonate : Calculate the change in enthalpy for the dissolving of sodium carbonate. Assume no heat lost to the surroundings and the solution has a specific heat capacity of 4.18 J/g°C.
Explain the rate of decrease to 4 disintegrations per minute : Radioactive carbon-14 has a half life of 5730 years. Suppouse a peice of wood has a decay rate of 15 disingrations per minute. How many years would it taker for the rate of decrease to 4 disintegrations per minute
What is its resistance during operation : A 117 V potential difference isapplied to a space heater that dissipates 500 W during operation. What is its resistance during operation
Explain what mass of the excess reactant is left : A reaction mixture initially contains 22.55g Fe2O3 and 14.78g CO. Once the reaction has occurred as completely as possible, what mass (in g) of the excess reactant is left
Explain relative mass of each atom in a chemical compound : The subscripts in a chemical formula represent the relative mass of each atom in a chemical compound. Explain why
Take agamemnons side : Take agamemnon's side: why was he correct to do what he did, and why any rational person in his situation would do the same. Please mention Chryses, Brisies, and Achilles.

Reviews

Write a Review

Chemistry Questions & Answers

  Explain copper is obtained from ores containing the minerals

Copper is obtained from ores containing the minerals, azurite,Cu3(CO3)(OH)2, chalcocite, Cu2S, chalcopyrite CuFeS2

  Rank each of the measurements from smallest to largest

Rank each of the following measurements from smallest to largest

  Explain the average molar mass of the gas mixture

The box is then heated to 500K, which causes the ammonia to partially decompose to Nitrogen and Hydrogen and results in a final pressure of 4.85*10^6 pa. Find the number of moles and partial pressure of all three gases at 500K. What is the average..

  Explain best for achieving an e2 elimination

Which reagent would be best for achieving an E2 elimination of 3-chloropentane? a. C2H5OH b. CH3CO2Na c. NaHCO3 d. NaI

  Evaluate the grams of solid na2hpo4

Calculate the grams of solid Na2HPO4 that should be added to a 0.50M NaH2PO4 solution to make 50 mL of a buffer with a pH of 7.4; the ka for the NaH2PO4 is 6.2X10^-8

  Compute the ratio of the concentration

The pH of a bicarbonate-carbonic acid buffer is 8.50. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).

  Explain metal crytallizes in one of the three cubic lattices

An unkown metal crytallizes in one of the three cubic lattices. The edge length of the unit cell is 408pm. Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R ..

  Define the molecular weight of the unknown compound

An aqueous solution made by dissolving 168 mg of an unknown compound (a nonelectrolyte) in enough water to make 500.0 mL of solution, develops an osmotic pressure of 5.22 torr at a temperature of 23.5 °C. What is the molecular weight of this unkno..

  Explain nitrogen triflouride decomposes to form nitrogen

Nitrogen triflouride decomposes to form nitrogen and flourine gases according to the following equation: 2NF3 (g) N2(g) + 3F2(g) when 2.06 mol of NF3 is placed in a 2.00-lcontainer and allowed to come to equalibriumk at 800k,

  Compute the empirical formula for the bismuth oxide

calculate the empirical formula for the bismuth oxide, 89.7% Bi and 10.3 O. and percent composition

  Explain solution of the weak base methylamine

Which value is closest to the pOH of a 0.30M solution of the weak base methylamine (CH_3_NH_2_). The Ka for the acid form of methylamine (CH_3_NH_3_+) is 2.27E-11.

  Explain what is the volume in liters of this co2 at stp

How many grams of CO2 are formed by the complete reaction of 33.7 g of limestone. What is the volume in liters of this CO2 at STP

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd