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A cube of a silver-colored metal with a volume of 64 cm3 has a mass of 672 g. The density of pure silver is 10.5 g/cm3. Is the metal pure silver?
calculate the wavelength of the photon emitted when an electron drops from 4d obital to a 2p orbital in a hydrogen atom using Rydberg constant as 1.097 x 10-2 pm-1 .
Calculating the concentration of the acetate ion when dissociation of acetic acid occurs in water and over varying pH conditions? I am a process engineer in wood pulping operation in which we use steam to digest hardwood chips. This is non-chemica..
Which of these statements correctly describes a diamond?
2C4H10 + 13O2 → 8CO2 + 10H2O The equation shows the combustion of butane (C4H10). How many moles of water can be produced by 12.5 moles of C4H10 with excess oxygen.
how many calories are required to raise the temperature of a 150.g sample of gold from 25 Degrees C to 175 Degrees C
Dipole moment, Formaldehyde has a very large dipole moment (2.33 Debye) whereas carbon monoxide has a very small dipole moment (0.11 Debye)
You are given a worked wooden item from an archaeological dig believed to date to during the last glaciation. As such, the artifact would be another piece of evidence.
HEPES are synthetic amine compounds that are often used to make buffers for biochemical studies. What is the pH of a 1.0 L buffer solution that is 0.250M HEPES
calculate how many mgs of Ca2+ are present in 12.0mL of blood and Determine the percent yield 5.04 grams of H2
How much does the molar enthalpy change when 147 g. of water cools from 90.0 C to 17.0 C when 20.0 g. of KCL is added to the water? Is this reaction exothermic or endothermic?
Suppose you have a sample of sodium weighing 11.62 g. How many atoms of sodium are present in the sample?
We place 1.32 mol PCl5 in a 1.0 L flask and allow it to reach equilibrium at a given temperature. What is the final concentration of Cl2 in the flask?
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