A sample contains radioactive atoms of two types a and b
A sample contains radioactive atoms of two types, A and B. Initially there are five times as many A atoms as there are B atoms. Two hours later, the numbers of the two atoms are equal. The half-life of A is 0.74hours . What is the half life in hours
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Describe the unique behavior of water (thermal expansion and specific heat capacity) that make it essential for life on Earth. 5-8 sentences
Calculate the pressure exerted by 1.0 mol C2H6 behaving as (a) a perfect gas, (b) a van der Waals gas when it is confined under the following conditions: (i) at 273.15 K in 22.414 dm3, (ii) at 1000 K in 100 cm3.
In a muonic atom, the electron is replaced by a negatively charged particle called the muon. What is the shortest wavelength of the Lyman series in a muonic hydrogen atom
The critical constants of ethane are Pc= 48.20 atm, Vc= 148 cm3mol-1, and Tc= 305.4 K. Calculate the van der Waals parameters of the gas and estimate the radius of the molecules.
A sample contains radioactive atoms of two types, A and B. Initially there are five times as many A atoms as there are B atoms. obtain the half life in hours
One end of a long glass rod (n = 1.3) is a convex surface of radius 4.9 cm. An object is located in air along the axis of the rod, at a distance of 10 cm from the convex end. (a) How far apart are the object and the image formed by the glass rod
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When an object is placed 110 cm in front of a spherical refracting surface with a -36 cm radius of curvature, the image distance is +290 cm. If the index of refraction of the surrounding material is 2.1, what is the index of refraction of the refr
You hold a spherical salad bowl 80cm in front of your face with the bottom of the bowl facing you. What is the orientation is it erect or inverted
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