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What does this chemical formula mean? Can you break it down bit by bit?
4KAlSi3O8 + 4H+ + 2H2O = 4K+ + Al4Si4O10(OH)8 + 8SiO2
A solution made by dissolving 1.20 g of the unknown compound in 25.0 g of benzene had a freezing point of 4.7 degrees Celsius
What mass of I2 is needed to add to a 250 mL volumetric flask to produce a solution that is 0.20 M? (Enter unit as g.)
The standard free energy of activation of one reaction A is 91.70 kJ mol (21.92 kcal mol). The standard free energy of activation of another reaction B is 74.50 kJ mol (17.81 kcal mol).
Is dissolving KHT at 25.0 celsius spontaneous or non spontaneous; is there a temperature for this system where delta G=0?
Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (\rm nm), where 1\;{\rm nm}= 10^{-9}\;{\rm m}. What is the energy of the X-rays
crystallize in a cubic closest packed structure. Use the density of silver (10.5 g/cm3) and its molar mass (107.9 g/mol) to calculate an approximate atomic radius for silver
Determine the molecular mass and its uncertainty for CH3CH2COOH. Note: Pay attention to significant figures and use the atomic masses given in the table.
If we assume that the volume change is due entirely to this density change (that is we neglect thermal expansion of the ice/water), what is the difference between the enthalpy change and the energy change during theis process? Is this a significan..
A metal object with a mass of 19g is heated to 96c, then transferred to a calorimeter containing 75g of water at 18c. The water and teh metal object reach a final temperature of 22c.
A cook wants to heat 1.73 kg of water from 30.0C to 100.0C .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn.
When cyclopentane is exposed to Br2 in the presence of light, reaction occurs. Write the formulas of all possible monobromination products. Draw molecule by placing atoms on grid.
Tween-20 is a detergent that is often used in immunological assays. Concentrated Tween-20 a viscous liquid and is difficult to accurately pipette in small amounts. Because of thism it is common to make a 10% stock of Tween 20 i nwater and use this..
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