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The observed rotation of a solution of 1.3 g of a compound in 10 mL of water is +3.7 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound?
What is the percent hydrogen (H) by weight of a solution containing 53.5mL of CH3COCH3? The density of acetone is 0.788 g/mL.
Tincture of iodine is I2(s) dissolved in ethanol, C2H2OH. A 1% solution of tincture of iodine is 10.0g of solute for 1000g of solution.
The substance CS2 has a melting point of -110.8°C and a boiling point of 46.3°C. Its density at 20°C is 1.26 g / cm3. It is highly inflammable. a.)Name this compound.
converted completely to another molybdenum oxide by adding oxygen. The new oxide has a mass of 17.63 g. Add subscripts below to correctly identify the empirical formula of the new oxide.
It is possible to draw a valid Lewis structure that follows the octet rule for all of the following except one. Which one cannot be drawn without violating the octet rule.
Caculate the wavelength of light( in nanometers) that is absorbed when the electron in a He+ ion goes from the n=2
A laboratory technician needs to make 500.0mL of a 0.25 M NaOH solution. What mass of sodium hydroxide does the technician need to use?
determine if the brominated product (2,3-dibromo-3-phenylpropanoic acid) is contaminated with some unreacted starting material (during the bromination of trans-cinnamic acid)?
If the molar mass is 88 g/mol and the percent composition is 54.5% carbon, 9.15% hydrogen and 36.3% oxygen, what is the molecular formula of dioxane?
The resulting solution required 12.21 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places
The half-cell is a chamber in the voltaic cell where one half-cell is the site of an oxidation reaction and the other half-cell is the site of a reduction reaction.
Write the balanced 1) molecular, 2) total ionic, 3) net ionic reactions, and identify the spectator ions for the following: sodium sulfate(aq) + strontium nitrate(aq) -->
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