How many milligrams of polonium-210 remain

Reference no: EM13147962

The half life of polonium-210 is 138.4 days. How many milligrams of polonium-210 remain after 415.2 days if you start with 2.0 mg of the isotope?

Reference no: EM13147962

Questions Cloud

How much must be allocated now : A sum of sufficient magnitude is to be invested now so that starting in 10 years from now an amount of $2500 per year can be paid in each of 8 succeeding years. The unexpended money remains invested at 6% compounded annually. How much must be allo..

Compute the molarity of the hcl solution : Calculate the number of mmoles of primary standard grade Na2CO3. b. How many mmoles of HCl reacted with the Na2CO3? c. Calculate the molarity of the HCl solution.

What will be the future worth of a series of annual payment : What will be the future worth of a series of 15 annual $1500 payments if the nominal annual interest rate is 7% and the interest is compounded quarterly?

Write a sequence of biochemical reactions : Write a sequence of biochemical reactions, starting with pyruvate, that results in a balanced equation that has the net formation of an a-ketoglutarate, without the formation of any other TCA cycle intermediates (but can have ATP, NAD+, H2O, CO2, ..

How many milligrams of polonium-210 remain : The half life of polonium-210 is 138.4 days. How many milligrams of polonium-210 remain after 415.2 days if you start with 2.0 mg of the isotope?

What has been effect of longtime control in new york city : What has been the effect of longtime rent control in New York City? Why were controls initially imposed and why do they persist to this day?

Create interval for the true average age of the consumers : The average age in the sample was 22.5 years with a standard deviation of 5 years. Construct a 95% confidence interval for the true average age of the consumers.

Income statement for subscriptions revenue : In November and December 2007, Lane Co., a newly organized magazine publisher, received $90,000 for 1,000 three-year subscriptions at $30 per year, starting with the January 2008 issue. Lane included the entire $90,000 in its 2007 income tax retur..

Are neurons more likely have depolarized or hyperpolarized : During sleep, relay neurons in the thalamus reduce information reaching the cerebrum by altering their membrane potential. Are these neurons more likely to have depolarized or hyperpolarized? Explain you reasoning.

User Account

All Pages