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Chemical reactions are typically faster when a catalyst is added. This is because... 1. Molecules are moving faster when a catalyst is added, so it is easier to get over the activation barrier. This will increase reaction rate. 2. Molecules are moving faster when a catalyst is added, so the collisions occur with a higher energy which makes it easier to get over the activation barrier. This will increase reaction rate. 3. Adding a catalyst lowers the activation barrier, which makes it easier to get over the activation barrier. This will increase reaction rate. 4. None of these statements is correct.
A basketball is inflated to a pressure of 1.50 atm in a 20.0C garage. What is the pressure of the basketball outside where the temperature is -5.00C.
A solution of phosphoric acid was made by dissolving 10 g of H3PO4 in 100 ml of water. The resulting volume was 104 mL. Calculate the density, mole fraction, molarity, and molality of the solution. Assume water has a density of 1.00 g/cm3
Draw the Lewis structure for each of the following molecules or ions, and predict their electron-domain and molecular geometries.
A 250.0 mL aliquot of 2.50 M H2SO4 solution is mixed with a 250.0 mL aliquot of 4.00 M HNO3 solution. What is the molarity of hydrogen ions in the combined solution.
A 1.0 L solution has a mixture of 0.05 M NaH2PO4 (pKa = 6.86) and 0.10 M Na2HPO4. How much 1.0 M NaOH should be added to bring the solution to pH 7.4?
calculate the number of grams of acetic acid per 10ml of the vinegar. Since vinegar has a density of about 1.00 gram/ml, 100 ml eighs about 100 g.
Three gases, hydrogen, helium, and krypton are confined in a 10.0 L vessel at a pressure of 6.00 atm. The vessel contains 4.00 moles of hydrogen, 3.00 moles of helium, and 5.00 moles of krypton.
starting from alcohol that contains four or less carbon atoms and from benzene and toluene,
Determine the equilibrium concentrations - what are the new equilibrium concentrations of all species.
Ten grams of hamburger were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth of a mL of this slurry was added to 9.9 mL of sterile buffer.
A compound contain 60.87% carbon, 4.38% hydrogen, and 34.75% oxygen then determine its empirical formula?
Calculate the number of moles of gas in a 3.24 L basketball inflated to a total pressure of 24.3 psi (pounds per square inch) at room temperature (25 degrees Celsius).
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