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1. What is a chemical shift in NMR spectroscopy? Please explain by providing examples
2. Discuss Gabriel Synthesis with examples.
1 what is the molar mass of a substance that is 22.3 n bymass and one molecule contains 2 nitrogen atoms?2 what is the
If the titrant has a molarity of 0.2500 M and there are 45.00 mL of analyte present, what is the molarity of the analyte?
An experiment shows that a 115 mL gas sample has a mass of 0.169 g at a pressure of 699 mmHg and a temperature of 31C.What is the molar mass of the gas?
Explain what mass (g) of acetylsalicylic acid is present in the sample. Compute the percent purity of the aspirin sample.
For a certain process at 25 degrees C, deltaG = -2.4 kJ and deltaH = +1.2kJ. Calculate deltaS for the process.
How many moles of O2 are needed to burn 1.05 mol of C8H18
The CO2 output of an astronaut is about 1.3 kg/day. What is the minimum mass of LiOH required for a six-day space shuttle flight involving five astronauts?
Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral.
how many moles of NH4Cl are necessary to prevent the precipitation of magnesium hydroxide (neglect change in volume due to addition of NH4Cl)? The solubility product for Mg(OH)2 is 1.5× 10-11, and the Kb for ammonia is 1.8 × 10-5.
Are the bonds in each of the subsequent substances ionic, non polar covalent, or polar covalent. Arrange the substances with polar covalent bonds in order of increasing bond polarity
an equilibrium mixture of o2 so2 and so3 contains equal concentration of so2 and so3. calculate the concentration of o2
An unknown metal is found to be arranged in a fcc structure. The density of the metal is 8.91g/cm3 as well as the edge cell length is 352.4pm find out the molar mass of the metal. Explain what is the metal.
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