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The fare for a taxicab is $5 per trip plus $0.50 per mile. The fare for the trip from the airport to the convention center was $11.50. Write and solve an equation to find how many miles the trip is
(a) If each sphere represents 1.0 x 10^-3 mol of ion, will the equivalence point have been reached when all of B has been added to A?(b) What is the molarity of B?(c) What additional volume (mL) of
Find appropriate ligands (aromatic with two Nitrogen functionalgroups) to bind Fe (NO) 2(CO)2in the form of Dintrosyle Ironcomplexes.
The kinetic energy of a vehicle is described by KE(v) = (.5*mass)v^2, where V is velocity. Graph the function. What is the percent energy increase if we go from 30 to 40 mph?
Compare the nucleoid area (prokaryotic) to a nucleus (eukaryotic)? How do they differ; how are they similar? Compare the bacterial flagellum (prokaryotic) to an animal cell flagellum (eukaryotic)? Ho
How many kcal are needed to change 5.00 g of water at 25.0 degrees celsius to steam at 100.0 degrees celsius? the molar heat of vaporization is 9.71 kcal/mol.
A calorimeter containing 150 g of water at 23.0 degrees celsius and the temperature of the calorimeter rose to 35.60 degrees celsius. what would be the heat capacity of the calorimeter?
Adding heat to tap water causes the dissolved oxygen to leave. Which of the two equations below represents a chemical reaction, and which does not?
Write a net ionic equation for each of these two reactions. What ion replaces the Ca2+(aq) and Mg2+(aq) ions in the water?
Each pound of sewage cost Sweet Smell 5 cents and each pound of compost costs 6 cents. Formulate as a linear programming problem.
Write a net ionic equation for the precipitation reaction, if any, that occurs when aqueous solutions of the following ionic compounds are mixed.
Gallium arsenide is a polymeric material, but its mass spectrum shows fragments with the formulas GaAs and Ga2As2. What would the distribution of peaks look like for these two fragments?
Write a balanced equation for each of the following double-displacement reactions. Include states: Aqueous solutions of chromium (III) iodide and sodium hydroxide react to give aqueous sodium iodide.
Which of the following is evidence for a chemical reaction? Heating purple iodine crystals produces a purple gas. Dropping sodium metal into water produces fizzing.
What is the empirical formula? If the molar mass of the chlorine oxide is 356.7 g/mol, what is the molecular formula of the compound?
Then calculate the back work ratio. Assume the compressor and turbine are ideal. What is the entropy generation for the compressor and for the turbine?
Some calcium supplements contain calcium citrate, Ca3(C6H5O7)2, and others contain calcium carbonate, CaCO3. Which compound has the higher mass percent of calcium?
If you have 44.6 g of carbon tetrachloride, how many atoms of chlorine do you have? How many grams of sulfur hexafluoride would you need to have 5.25 x 1024 fluorine atoms?
Write at least three of them. How many moles of Al atoms are needed to combine with 0.565 mol of O atoms to make aluminum oxide, Al2O3?
How to balance the chemical equation of aluminum and hydrochloric acid?
Calculate the molar mass for each of the following: calcium sulfide, CaS. For element X, 59.8 g corresponds to 2.6 moles. What is the atomic mass of the element?
A mini license plate for a toy car must consist of three numbers followed by a letter. Each number must be a 3,6, or 9. Each letter must be a T or R. Repition of digits is Not permitted. Use the co
Calculate the number of particles in each of the following: 0.125 mole zinc atoms, Zn 0.125mole zn/ 1 mole x 65.39 zn = 8.17375 or 81.74 g zinc.
How many years are there in 1 mole of seconds? Use conversion factors, and show which units cancel. 6.022 x 10^23 sec x 1 min/60 sec/ 1 hr/60 min/1 day/24 hr/1 yr/365 days = 6.022 x 10 ^23 sec 1.004
What is the probability that an event will occur between z = -0.46 and z = 2.21 on the standard normalized curve?