Explain very desirable that pesticides eventually decompose

Assignment Help Chemistry
Reference no: EM13512308

It is very desirable that pesticides eventually decompose in the environment to give harmless products. Let us assume the half life for the first order decomposition of a certain pesticide is 10.2 years. If the present concentration of a pesticide in a lake is 3.0 x 10^ -8 M, what was the concentration 4.00 years ago?

Reference no: EM13512308

Questions Cloud

Find by how much is the column compressed : A 3.7-m-tall, 60-cm-diameter concrete column supports a 2.0×10^5 load. By how much is the column compressed
Define a synthesis of ethyl neopentyl ether : Propose a synthesis of ethyl neopentyl ether, C2H5OCH2C(CH3)3, from an alkyl bromide and any other reagents
What is the sound power at the threshold of pain : The human eardrum has an area of 5.0×10-5 m2. What is the sound power at the threshold of pain
Find the magnitude of the force exerted by the water : A container has a large cylindrical lower part with a long thin cylindrical neck. What is the magnitude of the force exerted by the water on the bottom of the container
Explain very desirable that pesticides eventually decompose : It is very desirable that pesticides eventually decompose in the environment to give harmless products. Let us assume the half life for the first order decomposition of a certain pesticide is 10.2 years.
What point should the revenue from the gift cards : At what point should the revenue from the gift cards be recognized and should the revenue be recognized at the time the card is sold, or should it be recorded when the card is redeemed?
Provide the journal entry for shelton contribution : Provide the journal entry for Shelton's contribution to the partnership.
Explain what % of original mixture was methane : The CO2 was collected and its pressure found to be 25.2kPa in the same volume and at the same temperature as the original mixture. What % of original mixture was methane
What is the amount of equity : Pam's Candy Co. has assets of $49,200 and liabilities of $28,200. What is the amount of equity? What is the amount of net assets?

Reviews

Write a Review

Chemistry Questions & Answers

  State electron configurations has the 4f term symbol

1) Which of these electron configurations has the 4F term symbol for its ground state? p3 d3 d4 f2 f3

  Show the reaction of aqueous hg2no32 with aqueous sodium

Write complete ionic equation to show the reaction of aqueous Hg2NO32 with aqueous sodium chloride to form solid Hg2Cl2 and aqueous sodium nitrate.

  Explain chlorosulfonic acid with another reagent

Sodium lauryl sulfate can be prepared by replacing chlorosulfonic acid with another reagent. What could be used? Show the equations.

  Explain what is the relationship between two molecules

Two molecules are mirror images of one another, and they are not superimposable. What is the relationship between them? If two other molecules are mirror images of one another, and they are superimposable, then what is the relationship between them

  Explain tertiary structures of a protein

Compare the primary, secondary, and tertiary structures of a protein with the structure of a telephone

  The henry law constant kh for o2 in water is 56610-5g l-1

the henry law constant kh for o2 in water is 5.6610-5g l-1 torr-1 at 20 degrees c. calulate the concentration of

  Calculate the partial pressure of each gas

A mixture of 4.50 g of He, 12.0 g of Ne, and 29.0 g of Kr is placed in a cylinder at STP. Calculate the partial pressure of each gas.

  Explain 2-methycyclohexanol under acidic conditions

What is the product of the reaction of 2-methycyclohexanol under acidic conditions? What other elimination product(s) might be produced?

  What amount of heat is needed to boil away all of this water

2300 grams of water is heated. If this water starts at a temperature of 17 degrees Celsius, what amount of heat is needed to boil away all of this water?

  Explain what was the concentration in the water sample

the instrument response S for each of the five solutions, measured with a colorimeter, was found to be 0.240, 0.437, 0.621, 0.809, and 1.009, respectively. What was the concentration of Fe3+ in the water sample?

  Compute the pressure and temperature

Calculate the pressure and temperature at which 1.0 mol of H2O, HCl, and C6H6 corresponds to the same states as 1.0 mol of CH4 at 2.00 atm and 298

  Explain data what is the mass of the other isotope

The element antimony has an atomic weight of 121.757 amu and only two naturally occuring isotopes. one isotope has an abundance of 57.3 % and an isotopic mass of 120.904 amu based on these data what is the mass of the other isotope.

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