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The perimeter, area and volume of a tetrahedron (the solid whose faces are 4 equiliateral triangles) are respectively: P=6a; A=√3a2; and V=√2a3/12, where a is the length of an edge. An edge of the tetrahedron is measuered to be x cm where x = 17 and the uncertainty in the measurement is ±1cm, what is the percent uncertainty in the lench of an edge? What are the absolute and percent uncertainties in the perimeter, area and volume of the tetrahedron?
What is the density of a sample of air (average molar mass is 28.8 g/mol) that has a pressure of 750torr and a temperature of 27 degrees C?
Consider a solution formed by mixing 51.0 mL of 0.100 M H2SO4, 27.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
Write out the reaction mechanism for the side reaction of acetic anhydride with 85% phosphoric acid to make two
A balloon filled with 2.50 moles of helium has a volume of 32.4 L. What will be the new volume if 5.90 moles are added under constant temperature and pressure?
in the resonance form caused by the delocalization of the immediately adjacent Nitrogen's lone pairs, there is a pi bond.
A 45.5 g sample of copper at 99.8 degrees C is dropped into a beaker containing 152 g of water at 18.5 degrees C. What is the final temperature when thermal equilibrium is reached?
Calculate the number of free electrons per cubic meter for copper, assuming that there is one free electron per copper atom. The electrical conductivity and density
Write a balanced equation including states of matter for the reaction of Zn(H2O)4 2+ in aqueous NaCN. You can assume sodium is a secator ion and does not need
The freezing temperature of ethanol is -114.0 oC, the density is 0.789 g/cm3, and Kf is 1.99oC/m. Calculate the new freezing point when 0.100 L of methanol
The density of 70.4 wt% aqueous nitric acid, HNO3, is 1.41 g/ml. 1. How many grams of solution are in 1.500 L?
Determine the concentration of the sulphuric acid (H2SO4) solution If It takes 58 mL of 0.124 M potassium hydroxide(KOH) to neutralize 41.5 mL of sulphuric acid( H2SO4) solution.? Express your answers in units of moles/liter
The air pollutant NO is produced in automobile engines because of the high-temperature reaction below. If the initial concentrations of N2 and O2 at 1000 K are both 1 M
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