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Problem-The elemental composition of lactic acid is 40.0% carbon, 6.71% hydrogen and 53.29% oxygen, and has a molecular mass of 90.0 g/mol. What is the molecular formula of lactic acid?
Show all work, use additional paper if necessary.
Dry ice is solid carbon dioxide. In its place of melting, solid carbon dioxide sublimes according to the subsequent equation: While dry ice is added to warm water, heat from the water reason the dry ice to sublime more quickly.
calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n 6 to n
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755mm Hg and a temperature of 25 C
Explain the difference between simple and fractional distillation. What are the differences in glassware used in simple vs. fractional distillation
Problem- You are titrating 0.1M acetic acid with 0.1 M potassium hydroxide (KOH). What is the pH at the initial point of titration? Ka (CH3COOH)=1.8*10^-5. What the pH at the equivalence point of the titration
solid lithium hydroxide is used in space vehicles to remove the carbon dioxide gas exhaled by astronauts. the
Depict the Lewis structure of KHP, potassium hydrogen phthalate, showing all atoms, bonds, and lone pairs. If resonance structures are possible, show only one of them.
after analysing a reaction mixture itnbsp showed that it contained the compositionnbsp ofnbsp 0.545 moll h2 0.416 moll
what causes an increase in the solubility of a gas in a solvent in which the gas does not react with the solvent to form a new substance?
Predict the ionization energy of Li2+ given that the ionization energy of He+ is 54.4eV. whats the math work on this too
How to find out how many stereoisomers exist in a moleule. The general rule 2n, however that only tells the maximum amount right. Explain how to draw the structures of the stereoisomers once know how many there are like if they are meso, or a pair..
At 0.0 degrees C, if the volume of air is 1.7 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
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