Determine the half life of the substance
When radioactive substance provides a counting rate of 1250 cpm at time t = 0, and a counting rate of around 475 cpm at time t = 20 minutes, determine the half life of the substance.
Expected delivery within 24 Hours
The average counting rate of the radioactive sample is around 486 cpm. Determine the probability that in any given 10 second interval one obtains less than 72 counts. Is this similar as the probability of getting less than 72 x 6 = 432 counts in a
Determine the mass of the propane in the flask if a 2.00L flask is filled with propane ga (C3H8) at 1.00 atm and -15.0c.
Determine how many grams of gas are present in a sample the has a mol as mass of 70.0 g/mol and occupies a 2.00L container at 117 kPa and 35.1c?
One curie = 3.7 x 10610 decays per second. The half life of 137Cs is 30 years. When the current activity in such a source is 7.5 micro-curies, determine what will it be in around 15 years?
How many milliliters of 3.550M H I (aq) must be added to a solution containing .700 mol of Pb(NO3)2(aq) to completely precipice the lead. Lead iodide is virtually insoluble in water so that the reaction appears to go to completion.
An object consists of a weight of 7.4 N in air. Though, it apparently weighs just 3.3 N if it is fully submerged in water. Determine the density of the object? Represent your answer by using two significant figures.
A mass is joined to a spring on the frictionless horizontal surface. The mass is pulled to stretch the spring by 0.1 m and then gently released. A short time later, as the mass passes via the equilibrium position, its speed is around 1 m/s.
Find the way to know instantly whether surface is orientable or nonorientable from reading off word which tells how edges are to be identified?
1938904
Questions Asked
3,689
Active Tutors
1458651
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Following current events related to immigration reform, a group of students came to school wearing t-shirts representing national flags
A student notifies you that she has been subjected to bullying through a classmate's Facebook page. Write of 500 words in which you address the following:
Assignment Task: Technological advances have significantly enhanced the ability to efficiently collect and analyze evaluation data.
As you come to the close of your study of World Religions, it has become evident over the past two weeks that religions will continue to have a place
What do you believe about the purpose of classroom management? How will these beliefs influence the rules and expectations you set?
As educators, we are always trying to improve ourselves as well as our professional approach. One needs to reflect on our personal needs and areas of profession
What is the purpose of the flyer? What all services does your program offer for infants and toddlers? Who is your audience?