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A 500mL solution contains 1.68g NH3 and 4.05g (NH4)2SO4. How many mL of 12M HCl is needed to change the pH to 9.00?
A 4.10 g nugget of pure gold absorbed 287 J of heat. The initial temperature was 24.0°C. What was the final temperature?
Presence of Aldehyde Group, An excellent way to identify the presence of an aldehyde group is by 1H NMR. The chemical shift of the aldehydic proton occurs in the 9-10-ppm region
What is the energy of a C-C bond in kJ/mole? Explain. How does this amount of energy compare?
The bonding in BF3 requires formation of hybrid orbitals on boron. If the molecule is oriented in the xy plane, what is the identity of the unfilled p orbital on boron.
An organic liquid is a mixture of methyl alcohol and ethyl alcohol. A 0.220g sample of the liquid is burned in an excess of O2(g) and yields 0.342 g CO2(g). What is the mass of methyl alcohol in the sample?
For each of the following, calculate the concentration of Tris, Tris-H+ and the pH of the solution in each of the following solutions.
At a certain temperature and pressure 1.4 L of N2 reacts with 2.1 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
For the following reaction, 5.21 grams of nitrogen gas are allowed to react with with 5.51 grams of hydrogen gas.nitrogen (g) + hydrogen (g) ammonia (g),What is the maximum amount of ammonia that can be formed.
Calculate the partial pressure of each gas in the container. Express the pressure values numerically in atmospheres, separated by commas.
3NaHCO3(aq) + H3C6H5O7(aq) → 3CO2(g) + 3H2O(l) + Na3C6H5O7(aq) How many moles of Na3C6H5O7 can be produced if one tablet containing 0.0119 mol of NaHCO3 is dissolved?
calculate how much CaCN2 is required to form 12.6 moles of ammonia? Given that the percent yield is 65.8%?
What structural similarities exist between indigo, tyrian purple, alizarin, picric acid, and the main component of mauveine? The compounds beta-carotene and crocetin are not listed as part of this group
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