An archeological specimen containing 34g of carbon has an
An archeological specimen containing 3.4g of carbon has an activity of 0.33 Bq. How old (in years) is the specimen? Carbon-14 has a half-life of 5730 years, and an activity of 0.23 Bq per gram of carbon in a living organism.
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A water soluble salt forms a precipitant during the group 3 analysis. An acidic solution of this precipitant and NaBIO3 yields a pinkish color. This same salt has no reaction to BaCL2
Flange thickness hf= 0.2h and web width bw=0.4. The member will be prestress using graded 270 strand. Time dependant losses are estimate at 20% of Pi. Normal density concrete will be used with f'c = 5000 psi
You want to throw a pebble at a window located 9.6 m above the ground, making sure that the pebble hits the lowest part of the window with a strictly horizontal velocity. What is the velocity with which the pebble hits the window
A white colored salt contains a cation from group 4. It has no reaction with concentrated H2SO4 or AgNO3. It produces an insoluble product with acidic BaCL2. This salt is not water soluble. What is the chemical formula for this salt
An archeological specimen containing 3.4g of carbon has an activity of 0.33 Bq. How old (in years) is the specimen
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Use the Boltzmann equation to calculate the excited-state and ground-state population ratio for HCl (g*/g0=1) at room temperature (25 oC). The frequency of the absorption from the ground to the excited state is 2885 cm-1. What is the population ra
how long would it take a layer of this clay 5m thick to reach the same degree of consolidation under the same stress and drainage conditions. how long would it take the layer to reach 30% consolidation.
Determine the required mass of block A so that when it is released from rest it moves the 5-kg block B a distance of .75m up along the smooth inclined plane in t=2s. Neglect the mass of the pulleys and cords.
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