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What are the chemical combinations that result in skin-safe ingredients?
predict the vernier angle based on the following best-fit line equation: y = 0.0126x + 25.68? y is for vernier angle and x is for wavelength in nm. Estimate to the nearest whole number.
Consider an ideal gas with an absolute temperature of T1. To what temperature would you need to heat the gas to double its pressure?
the two rarest non-radioactive elements are ruthenium and rhodium, each with an abundance of 1x10^-4 g/t. What is the total mass of each of these elements in the Earth's crust (1 t = 1000kg)?
Nitrobenzene, C6H5NO2, an important raw material for the dye industry, is prepared from benzene, C6H6, and nitric acid. When 22.4g of benzene and an excess of HNO3
What is the change in energy, wavelength and frequency of an electron that gets promoted to n=4 and returns to n=2
calculate the ph of a solution that is made by combining 125 ml of 0.050 M hydrofluoric acid with 50 mL of 0.10 M sodium fluoride
Provide the structure of the ylide needed to prepare 3-ethyl-3-heptene from 3-pentanone using a wittig reaction
An aqueous solution of glycerol C3H8O3 is 48% glycerol by mass. Calculate the molality of the glycerol solution
State the full ground-state electron configuration for the following. State answer using the format 1s2 2s2 2p6 for 1s22s22p6.)
Question- Suppose that 1.145g of solid NaOH is dissolved in 50.0mL water and a Delta T of +5.9 Degrees C in the solution is observed. What is qrxn for the solvation of NaOH
Explain the pH of a buffer system that contains 0.210 M hydrocyanic acid (HCN) as well as 0.160 M sodium cyanide (NaCN)? The pKa of hydrocyanic acid is 9.31.
Provide structures consistent with the following molecular formulae and spectral data, and assign spectral peaks. Write your structures and tables on a sheet of paper.
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