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How much heat is necessary to change 500 g of ice at 10°C to water at 20°C? A quantity of steam (200 g) at 110°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
When combining atomic orbitals to form hybrid orbitals, how many hybrid orbitals are formed
determine how much concentrated solution can you take to form 1.15 litres of 0.105m nitric acid by mixing with
The reaction below is performed in a 1.0-L vessel. Explain what pressure of NOCl must you put into the empty vessel at the start with if you want to end up with 0.23atm of Cl2 at equilibrium. 2 NOCl(g) 2 NO(g) + Cl2(g) K
Carbon monoxide (CO) has a much smaller dipole moment than expected. This observation has puzzled chemists and led to much argument about the nature of the bonding in the molecule.
Air is 21 mole percent oxygen, that is, 0.21 atm oxygen at 1 atm. Suppose the pH of the water is 5.91 and that the concentration of iron(II) in the water is 3.29x 10-5 M, what is the potential of the corrosion reaction under the above conditions a..
Calculate the amount of heat liberated (in kJ) from 325 g of mercury when it cools from 81.9°C to 10.0°C.
A balloon equipped with a UV spectrometer was flown in the stratosphere to measure the [O_3] at an altitude of 25 km. The spectrometer had an absorbtion path length of b= 1000.0 m and measured a transmittance of T = 0.6952. Determine the concentr..
A solid laboratory sample contains two substances, lead(II) carbonate and potassium carbonate. A 5.000 g sample of this unknown was treated with aqueous nitric acid to dissolve it, then, after further treatment to adjust the acidity
an unknown concentration and you have five samples with known concentration of the compound. List 3 pieces of information you need to determine in order to calculate the unknown concentration spectrophotometrically.
34.62 mL sample of .1510 molar NaOH was needed to completely neutralize 50 mL of an H2SO4 solution. what is the concentration of the origional sulfuric acid solution?
Does anybody know what is the simplest way to irradiate a very small amount chemical solution? I have read some research papers, and there was a method that used polystrene tissue culture plastic wells
what are the allowed value for quantum numbers l,m, and s. Explain how this fits with the Mendeleev arrangement of the periodic table.
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