User Account

All Pages

Determine the ld50 of sarin

Assignment Help Chemistry
Reference no: EM13112270

Question: The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.

A. 1.4 x 10-4 mg/kg
B. 0.16 x 10-4 mg/kg
C. 1.8 x 10-5 mg/kg
D. 0.00023 mg/kg

Question: The smallest observed frequency for a transition state of an electron in a 1-dimensional box is 3.5 x 10^14 s^-1. What is the length of the box - do I use E = n^2h^2/8ma^2 equation?

 

Reference no: EM13112270

Questions Cloud

Discuss the significance of atomic nuclear decay : Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze the societal implications of using this process.
Proportion testing on crime rate : Figures for the yearly crime rate (the number of crimes per 1,000 population) in Mississippi, USA from 1993 to 2002 are as follows:
What insurance company charge for policy to break even : Probability is 0.5% that home will suffer the 50% loss due to fire. If we ignore all other partial losses, what premium must insurance company charge for policy just to break even?
Values of test statistics which separate rejection : The critical values are values of the test statistics that separate the rejection region from the non rejection region. Is this true? Explain answer.
Determine the ld50 of sarin : The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
Approximately how many origins of replication are required : DNA replication in early Drosophila embryos occurs about every 5 minutes. The Drosophila genome contains approximately 1.8 X 108 base pairs. Eukaryotic DNA polymerases synthesize DNA at a rate of approximately 40 nucleotides per second. Approximat..
Conducting right-tailed hypothesis test : If you were to conduct right-tailed hypothesis test at 5% significance level, you choose the critical value this way. Assuming that the null hypothesis is true
Draw the possible isomers of so3 : What hybrid orbital would be expected for the central atom in each of the following: Draw the molecular structure of these compounds and label Ï? and Ï?bonds.
Create the confidence interval using technology : A t-distribution to create 90% confidence interval for population mean. If convenient, use technology to create the confidence interval.

Reviews

Write a Review

Chemistry Questions & Answers

  Write the expression for the equilibrium constant

Write the expression for the equilibrium constant, Kb, for methylamine also compute the molar concentration of OH- in the 50.0 mL sample of the CH 3 NH 2   solution.

  Discuss potentially hazardous features

Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. Discuss at least three potentially hazardous features associated with concentrated sulfuric acid.

  Compute the percent ionic character of molecule

Calculate the molecular weight of this gas if A sample of gas weighs 0.250 g and occupies a volume of 112 cm3 at STP?

  Find ratio of the atomic mass of silicon to hydrogen

Find ratio of the atomic mass of Silicon to Hydrogen if every 100g of SiH4 contains 87.45g of Si and 12.55g of H.

  Determine the equilibrium concentrations

Determine the equilibrium concentrations - what are the new equilibrium concentrations of all species.

  Determine the phase composition and temperature

Determine the phase composition and temperature when equilibrium is reestablished?

  Determine the entropy change for freezing

Determine the entropy change for freezing 6.33 grams of C 2 H 5 OH at 158.7 K? H =-4600 J/mol. Express your answer in units of J/K.

  Determine the final temperature of the system

Determine the mass of the steel bar if the final temperature of the system is twenty one degree Celsius?

  Determine the change in ssys for the process

Determine  the change in Ssys for the process if  specific heat capacity for ethanol = 2.42 J/g K. express your answer in units of J/K

  Determine what is the percent by mass of sodium phosphate

Determine What is the percent by mass of sodium phosphate in a 0.142M Na 3 PO 4 (aq) solution? If it is given that it has a density =1.015g/mol.

  What are the parent and daughter concentrations

A rock contain 3.2 grams of a radioactive isotope, uranium-235, . Determine what was the original amount of uranium-235 in the rock If the rock has undergone 2.75 half lives, and how old is the rock?

  Initial concentration of nitrogen dioxide

How long will it take for 75% of nitrogen dioxide to decompose if the initial concentration of nitrogen dioxide is 1.33M

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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