What percent of the atoms remain

Assignment Help Chemistry
Reference no: EM13136327

The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?

Reference no: EM13136327

Questions Cloud

Make the message more effective and persuasive : Rewrite it in order to make the message more effective and persuasive. (15 marks) • Apply the suggestions you made in the previous question.• Ensure that you include relevant components of a persuasive message,• Write a persuasive favour request foll..
Make appropriate hypothesis test-process to obtain results : Perform an appropriate hypothesis test, showing the necessary calculations and/or explaining the process used to obtain the results.
What is the total revenue variance : What is the total revenue variance?
Creating journal entries for transactions : Prepare journal entries for the following transactions for Zenco Co.
What percent of the atoms remain : The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
During the current fiscal year the city engaged : Assume that the City of Amber maintains its books and records in a manner that facilitates the preparation of the fund financial statements. Amber City maintains a general fund, a capital projects fund, and a special revenue fund. During the curre..
What was germany''s influence in ww2 : what was Germany's influence in WW2
Reason to accept or reject the manufacturer-s claim : The sample showed an average of 56.2 miles per gallon with a standard deviation of 5 miles per gallon. With a 0.05 level of significance, do you accept or reject the manufacturer's claim.
Calculate the volume : if a liquid has a density or 1.17 g/cm(3) and a mass of 3750 g calculate the volume?

Reviews

Write a Review

Chemistry Questions & Answers

  Which h atom transition responsible for photon emission

Determine which H atom transition (ninitial,nfinal) was responsible for the emission of a photon with a frequency of 6.91 x 1014 Hz.

  Determine theoretical yield

Determine theoretical yield, limiting agent and excess reagent - How much excess reagent remains after the reaction goes to completion

  Chemical compounds undergo each kind of chemical reaction

Do all chemical compounds undergo each type of chemical reaction,i.e. synthesis, decomposition, metathesis-precipitation, metathesis-neutralization, redox-single displacement, redox-combustion and can this information be useful to a criminal inves..

  Determine hydroxyl and hydrogen ion concentration

Determine hydroxyl and hydrogen ion concentration in this solution. (if Ka for ammonium ion = 5.0 x 10^-10.)

  Calculate the molarity, molality, mole fraction, and weight

Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.

  Define photochemical chlorination of heptane gave a mixture

Photochemical chlorination of heptane gave a mixture of monochlorides containing 15% 1-chloroheptane. What other monochlorides are present? Estimate the percentage of each of these additioanl C7H15Cl isomers in a monochloride fraction.

  Calculate the heat capacity

An unknown metal X with a mass of 28 grams absorbs 58 J of heat. calculate the heat capacity if Its temperature raises from 31.1 °C to 39.9 °C.

  What precautions do you need to take with each of materials

You are a hazmat responder and walk into what appears to be a meth lab. There are flasks of iodine, White Gas fuel, Sodium Hydroxide, Nitric Acid, and a box of ephidrine.

  Determine the molar mass of the gas

Some observations through an experiment shows that a gas sample of 115 mili litres has a mass of 0.170 grams at a pressure of 711mmHg and a temperature of 34 degree celsius. Determine the molar mass of the gas.

  What mass of as2i4 was actually isolated

The compound As2I4 is synthesized by reaction of arsenic metal with arsenic triiodide. If a solid cubic block of arsenic (d 5.72 g/cm3) that is 3.03 cm on edge is allowed to react

  What is the average speed of the sprinter

What is the average speed of the sprinter if A sprinter set a high school record in track and field, running 200. M in 22.0s .express your answer in kilometers per hour?

  What is the percent yield of ccl4

Suppose 10.0 g of CH4 is used in a reaction that can theoretically produce 95.8 g of CCl4. What is the percent yield of CCl4 if the reaction produces only 80.0 g of CCl4.

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