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Urea, (nh2)2co, is dissolved in 250.0 g of water. The solution freezes at -0.085C. How many grams of urea were dissolved to make this solution? Please show work
A mixture of gases contains 0.26 mole CH4, 0.38 mole C2H6, and 0.18 mole C3H8. The total pressure is 1.50 atm. Calculate the partial pressures of the gases.
the density of aluminum is 2.70 gm/cm3 the density of chromium is 7.19 gm/cm3. if equal masses of Al and Cr are addede to equal vol of H2O in separate graduate cylinder which would have the greatest change in volume
Which of the following pairs of aqueous solutions will react when mixed?
Making a dilute solution, A student in lab class needs to provide a detailed description of how to make a dilute solution of 500 g
What is the voltage of the cell: silver-silver chloride electrode || saturated calomel electrode given that the potential for the Ag|AgCl electrode in a saturated KCl
To what temperature must the specimen be heated and how much Sn should be mixed to the 1.5-kilograms specimen at the temperature of twenty five degree celsius to achieve this state?
A solution of H2SO4(aq) with a molal concentration of 5.25 m has a density of 1.266 g/mL. What is the molar concentration of this
Brominated biphenyls (PBB) is created through an electrophilic aromatic bromization out of the hydrocarbon biphenyl.
What scientific principle or law is used in the process of balancing chemical equations. Define the terms limiting reactant and excess reactant.
How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18J(g*C). can someone explain this in detail. other descriptions don't answer this well and im lost when i try and do it
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years
Which are likely to be stable at ordinary temperature and pressure?
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