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Calculate the mass of neon that has the same number of atoms as 46.0 mg of xenon.
An experiment produces 15.0 grams of hydrogen for every 71.0 grams of oxygen used. How many grams of oxygen will you need to produce 6.0 g of hydrogen
Suppose a sample containing 1.200g of Compound X is heated in 25.0 mL of heptane. What is the minimum temperature required to dissolve the sample. If the sample were then cooled to 0 degrees, what would the percent recovery of the solid that would..
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
The vapor pressure and enthalpy of vaporization of an unknown substance are measured to be 204.2 torr and 28.8 kJ/mol, respectively at room temperature (298.15 K). Estimate the normal boiling point of the substance at an atmospheric pressure of 76..
Calculate the change in internal energy(delta E) for a system that is giving off 25.0kJ of heat and is changing from 6.00L to 12.00L in volume at 1.50atm pressure. (101.3J=1 L*atm)
The oxidation of aluminium is a pretty common reaction, and happens via the equation below.
The solubility of mercury(II) thiocyanate, Hg(SCN)2, is listed as 0.0683 g per 100 mL in a book. Convert that solubility term into a value for Ksp.
A sample of 0.0500 mol of ammonia (NH3) gas had a volume of 235. mL.The temperature andpressure were held constant and some ammonia was removed from the sample. Its new volumewas 175 mL. How many grams of ammonia were removed
The root-mean-square (rms) speed of a sample of molecules was found to be 1.8*10^3 m/s at 25.0 degrees C. After heating, the rms speed was found to be 4.6*10^3 m/s. What was the temperature of the sample after heating
calculate the partial pressure of each gas in atm. PN2 PO2 PAr PCO2 Calculate the concentration of each gas in moles per liter at 0 degrees C cN2 cO2 cAr cCO2 (enter answer in scientific notation for this one)
Draw the structure(s) of all carbocations that could potentially form from the alkene and label each carbocation as primary, secondary or tertiary. 2-methylpropene
a 75.0 l steel tank at 20.0c contains acetylene gas c2h2 at a pressure of 1.39 atm. assuming ideal gas behavior how
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