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A 10.0cm long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 11.48g . The density of ethanol is 0.789 g/mL.
What is the empirical formula of a compound that contains 49.4% K, 20.3% S, and 30.3% O by mass
The percent composition (by mass) of a compound is 40.0% carbon, 53.0 % oxygen and the rest is hydrogen. Find the empirical formula of the compound.
How many gallons of E25 could be made by dilution. About how many cars does this fill at 13.0 gallons per car
where the atmospheric pressure is 1.00 atm. The balloon rises to an altitude of 20,000 m, where the atmospheric pressure is 61 mmHg and the temperature is 210 K. What is the volume of the balloon at 20,000 m?
a 2.50-g sample of a large biomolecule was dissolved in 17.0 g of carbon tetrachloride. the boiling point of this
a compound consists of 60.0 carbon 26.7 oxygen and 13.3hydrogen. its molecular weight is 60. what are the possible
What is the boiling point of the water in your radiator if 2.00 kg of antifreeze (ethylene glycol, C2H6O2) is added to 9.00 x 10^3 grams of water
at a particular temperature the first-order gas-phase reaction n2o5 ----gt 2no2 12 o2 has a half-life for the
The solubility iof sodium chloride in water is 35.9 g NaCl/100 g of water at 25 degrees celsius. Calculate the mass percent and molality of NaCl in a saturated solution.
a.how many grams of calcium chloride would you need to add to 1liter of solution to make a 1 molal solution?b. how many
Consider the fructose-1,6-bisphosphate rxn from gluconeogenesis. What is the free energy change if the ratio of the concentrations of the products to the concentrations of the reactants is 22.5, and the temperature is 37.0 C. Delta G is -16.7kJ/mo..
Two acids, each approximately 0.01 M in concentration, are titrated separately with a strong base. The acids show the following pH values at the equivalence point: HA, pH = 9.5, and HB, pH = 8.5.
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