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A student tested her liquid unknown and determined the density to be 0.80g / (mL) , the boiling point to be 82 C, and that the liquid is soluble in water , soluble in cyclohexane , and soluble in ethanol. What is the best conclusion about the identity of the liquid unknown?
Fill in the lines for the orbital/arrow diagram for the valence electrons of the Dyprosium atom, including labeling the n, l and ml values and the individual orbitals that are known
A steel container with a volume of 500.0 mL is evacuated, and 25.0 g of CaCO3 is added. The Container and contents are then heated to 1500 K, cuasing the CaCO3 to decomposed completely
If this mixture is cooled at a constant pressure, at what temperature does the CCl4 first start to condense
an adult person radiates heat to the surroundings at about the same time as a 100-watt lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hrs?
Gold has a face-centered cubic structure and has a density of 19.3 g/cm3. What is its atomic radius?
In a first order decomposition in which the rate constant is 0.03 sec-1, how much of the compound (in mol/L) is left after 26 sec, if there was 2.00 mol/L at the start
The corrosion of iron can be thought of as an electrochemical cell reaction. Calculate the voltage difference between two points of corroding iron differing only in their partial pressure of oxygen: 0.20atm of oxygen at one point and 0.0010atm of ..
Consider two different solutions of the same UV-absorbing compound. Upon UV-analysis, Solution B gave an absorbance of 1.5 and Solution A gave an absorbance of 0. 5 at the same wavelength. Solution B is higher in concentration by what ratio (or pe..
What is molality of a 1.22 M solution of sugar (C12H22O11)? The density of the solution is 1.12 grams/ml 2- Which of the following in each pair with be more soluble in water?
What is the molar mass of sodium chloride. In an ionic reaction between sulfate and calcium, the ratio of calcium to sulfate ions is what
You only want to add 5μL of vincristine solution to your cells. Explain what concentration should you make your stock solution of vincristine in order to make this 5uL addition
question when atoms of the hypothetical element x are placed together they rapidly undergo reaction to form the x2
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