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Calculate the molarity of a sodium chloride brine solution that exhibits a density of 1.13 g/mL and a mass percent of 17.7% at room temp.
corn farmers typically use 5000 kg of ammonium nitrate per square kilometer of cornfield per year. Ammonium nitrate can be prepared by the following reaction. how much nitric acid would be needed to make the fertilizer needed for 1km2 of cornfield..
a piece of gold jewelry that weighs 9.35 g and has a volume of 0.654 cm3. The density of pure gold is 19.3 g/cm3 and the density of pure silver is 10.5 g/cm3.
if the observed rate constant for the oxidation reaction at 35 C is 6.75*10^-2 min^-1, and at 25 C is 3.25*10^-2 min ^-1. what is the activation energy for the reaction
1 mole of a hydrocarbon of formula CnH2n was burned completely in oxygen producing carbon dioxide and water vapour only. It required 192 g of oxygen. Work out the formula of the hydrocarbon.
find the lowest temperature of vaporization and the highest temperature when there is liquid left over.a liquid mixture
A. trigonal pyramidal, square planar, linear B. trigonal pyramidal, tetrahedral, see-saw C. trigonal planar, tetrahedral, square pyramidal D. T-shaped, see-saw, square pyramidal E. trigonal planar, see-saw, square planar I hate shapes, not positiv..
If 6.20 mol calcium carbide (CaC2) reacts with an excess of water, how many moles of acetylene (C2H2) will be produced?
A hypothetical element Z has two stable isotopes: Z-46 = 46.046 u 64.08% Z-51 = 50.826 u 35.92% What is the average atom weight of the element?
A process involves the performance of electrical work in the amount w' on a system. Show that if the process is carried out
When 190.0 mL of 0.360 mol are added to 190.0 mL of 1.00×10?2 M AgNO3 (aq), what percentage of the Ag+ is left unprecipitated?
Calculate ?rH° for the reaction 2C(s) + 3 H2(g) + ½ O2(g) ? C2H5OH(l) given the information below. C(s) + O2(g) ? CO2(g) ?rH° = -393.5 kJ/mol-rxn 2 H2(g) + O2(g) ? 2 H2O(l) ?rH° = -571.6 kJ/mol-rxn C2H5OH(l) + 3 O2(g) ? 2 CO2(g) + 3 H2O(l) ?rH° = ..
Classify the following pair of compounds as the same compound, enantiomers, diastereomers, constitutional isomers, or not isomeric. Also, select the correct IUPAC name
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