Molecules of acetylene
How many moles of oxygen are needed to react completely with 2.20×10^24 molecules of acetylene?
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The system CO2(g) + H2(g) - > H2O(g) + CO(g) is at equilibrium at some temperature. At equilibrium a 4.00 L vessel contains 1.00 mole CO2, 1.00 mole H2, 2.40 moles H2O, and 2.40 moles CO. How many moles of CO2 must be added to the system
Calculate the pH at the halfway point and at the equivalence point for each of the following titrations. (a) 100.0 mL of 0.30 M HC7H5O2 (Ka= 6.4 multiplied by 10-5) titrated by 0.30 M NaOH.
Describe how Avons business model has changed in light of demographic and social changes in the United States and abroad. What role has International Human Resource Management (IHRM) played in the companys global expansion?
Show the mechanism that forms the three products. Predict the major and minor products. Explain your choices.
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 2.2 1028 kg and 2.0 103 m. (a) Find the density of such a star.
Suppose that ammonia (a monoprotic base), applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 L of water. If the pH of this pond is found to be 9.81, what volume of liquid ammonia found its way into the pond?
A student found that her mixture contained 6% NH4Cl, 29% NaCl, and 75% SiO2. Assuming that her weighing and calculations were correct, what was the possible source of error in her experiment?
An airtight box has a removable lid of area 1.1 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 105Pa. The inside of the box is completely evacuated. What is the magnitude of the force re
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