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A glass capillary is placed in a bowl of water. Into what type of capillary will the water rise to the highest level, measured vertically from the surface of the water?
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A 1-mm wide capillary inserted vertically into the water. OR a 1.5-mm capillary inserted at 45 degrees into the water.OR a 1.5-mm capillary inserted vertically into the water.OR a 2-mm capillary inserted at 30 degrees into the water
The half life of Uranium-238 is 4.5 x 10^9 yr. A sample of rock of mass 1.6 g is found to produce 29 dis/s. Assuming all the radioactivity is due to Uranium 238, find the percent by mass of Uranium 238 in the rock.
Draw Lewis structures for each of the following species. Use expanded octets as necessary.
the problem does not specific a g value and supposedly can be solved. has to do with 12 reactions -- can you take
What is the characteristic of matter that causes it to expand when the temperature increases and contract when the temperature decreases?
How many moles of dinitrogen tichloride correspond to 645 mg of dinitrogen trichloride? How many nitrogen atoms would be required to produce that amount of dinitrigen trichloride.
In our world today, aluminum is used for many items, including beach chairs and soda cans. This material was not chosen randomly but was carefully selected based on many variables. Think about where aluminum comes from, how we obtain/purify it and it..
What is the BOD concentration just downstream of the discharge point? (b) If the stream has a cross-sectional area of 10 m2, "what is the BOD concentration 50 km downstream? (BOD is removed with a first-order decay rate con- stant equal to 0.20/da..
Write a series of nuclear equations to represent the bombardment of Al-27 with a neutron to form a product that then undergoes an alpha decay followed by a beta decay
A current of 0.600 A is passed through a cell for 5min and 30 s. How much charge (in C) was trasferred? How many electrons were transfered
Hydrogen gas (H2) and oxygen gas (O2) are the products when an aqueous acidic solution is electrolyzed; each mol of water gives one mol of H2 and half a mol of O2.
Complete the columns shown below by showing the correct structure of the species that will present in the respective layer. If none of the two compounds are present in any particular layer then clearly state "none"
Molybdenum crystallizes in a body-centered cubic array of atoms. The edge of the unit cell is 0.314 nm long. Calculate the density of this metal.
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