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What are the products of a toluene-sulfuric acid reaction? and how may percent of them?
What mass of NaCl must be dissolved in 65.0 grams of water to lower the freezing point by 7.50 °C? The freezing point depression constant, Kfp, for water is -1.86 °C/m. Assume the van't Hoff factor for NaCl is 1.87.
How many grams and pounds of washing soda are needed to remove the hardness from 500 gallons of water that has a hardness of 150 ppm CaCO3?
Enter the coefficient for each compound, seperated by commas, in the order in which they appear in the equation (e.g., 1,2,3,4,5,6,7).
A bottle containing 350 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
You believe your unknown compound is acetanilide that melts at 114-115 degrees, so you ask your professor for a sample of the pure compound to do a mixed melting point. You do the experiment and determine the mixed melting point is 106-110 degrees..
1) Explain how microorganisms can be used to produce electricity (bacterial fuel cells). 2) Explain why you feel pain when you bite down
What is the pressure of dry H2 in mmHg. In atm. d. Assuiming ideal gas behavior, how many moles of H2 has were collected.
what is the charge of the carboxyl group in an amino acid at physiological pH. Please explain the charge. Also what is the charge above and below physiological pH
How many grams of aluminum hydroxide are obtained from 18.2g of aluminum sulfide?
What mass of Na2CO3 is needed to prepare 250.mL of 0.0500 Molartity of Na2CO3 solution
the vapor pressure of h2o is 42.175 mm hg at 35 degree celsius. the vapor pressure of ethyl alcohol c2h5ohnbsp is 100.5
Sodium atoms(Na) emit light with a wavelength(λ) of 330 nano meters when an electron moves from a state of 4 p orbital to a state of 3 s orbital now you just need to determine the energy difference between the orbitals.
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