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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. How many grams of solvent are present in 1000g of this solution?
An oxide of copper is decomposed forming copper metal and oxygen gas. A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the copper oxide?
Predicting nuclear stability is important when determining whether or not a nuclear reaction can take place spontaneously.
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 .
In the conversion of glucose to pyruvate, how many of the actual steps involve electron transfer
Using Standard Free Energies of Formation at 25 degrees C, determine if the production of phosgene gas COCl2 from the combination of carbon monoxide gas (CO) and chlorine gas (Cl2) is spontaneous at room temperature.
calculate the final volume. A volume of 3.55 L of oxygen at 25 °C and 95 kPa is brought back to normal conditions (STP).
The emerging gas is collected in a 5.00L flask and is found to contain 8.62g of carbon monoxide, 2.60g of hydrogen gas, 43.0g of methane, and 48.4g of water vapor. Assuming that equilibrium has been reached, calculate Kc and Kp for the reaction.
Pure olive oil has an iodine value of about 85. A very old sample or originally pure olive oil is found to have an iodine value of 55. Explain
For the setup in the above question, what is the value of Q, the reaction quotient, for this cell reaction at 25oC. 2Cr(s) + 3Br2(aq) --> 6Br-(aq) + 2Cr3+(aq)
Calculate the mass of sugar (C12H22O11) that must be dissolved in 700 g of water to prepare 20% sugar solution
The most common error students make during a titration is that they add extra NaOH past the endpoint causing the solution to change a dark pink color.
Vitamin C is helpful in the absorption of what mineral (metal) when the two are present in the gut simultaneously?
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