What fraction of the original sample is left after 56.7 days

Assignment Help Chemistry

Reference no: EM13705105

Problem- 1) A particular radioactive isotope has a half life of 2.70 weeks. What fraction of the original sample is left after 56.7 days?

2) Which of the following statements is not true of electrolysis?

a) The electrolysis of water produces hydrogen gas and oxygen gas.

b) Electrolysis is used to recharge a lead storage battery.

c) Electrolysis is a process where electrical energy is used to produce a chemical change

d) None of these; that is, all these statements are true.

e) Electrolysis involves forcing a current through a cell to produce a change thta would otherwise not occur.

You must show your work in an efficient manner so I can understand it in clearly

Reference no: EM13705105

Questions Cloud

Compute and print to the screen the average number : Compute and print to the screen the average number of hamburgers that were ate per day ( which may have a fractional component).

Compute the ksp for agi if it 100% dissociated in water : Problem- Compute the Ksp for AgI if it 100% dissociated in water, and if its solubility is equal to 1.9 x 10-5 M

What is the oh- concentration in the solution : Problem- What is the concentration of H+ in 0.00065 M HNO3. What is the pH of the solution. What is the OH- concentration in the solution

What is the concentration of h+ in 0.00065 m hno3 : Problem- What is the concentration of H+ in 0.00065 M HNO3. What is the pH of the solution. What is the OH- concentration in the solution

What fraction of the original sample is left after 56.7 days : Problem- 1) A particular radioactive isotope has a half life of 2.70 weeks. What fraction of the original sample is left after 56.7 days. 2) Which of the following statements is not true of electrolysis

Compared to the half-equivalence point for the original : Problem- A modification on a chemical compound results in the shifting of its pKa value from 2.0 to 4.0. Compared to the half-equivalence point for the original compound, the new compound will reach its half equivalence point when the hydronium io..

Write a method that takes two integers as parameters : Write a method that takes two integers as parameters and returns trueif the first integer is evenly divisible by the second integer, false otherwise.

Prepare a method that takes a string as input : Prepare a method that takes a String as input and returns a String containing the middle character of the String if the length of that String is odd.

Calculate the standard cubic feet of gas in the vessel : Problem- A vessel contains 100 lb moles of hydrocrabon gas. Calculate the standard cubic feet of gas in the vessel.

User Account

All Pages