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Understanding atomic weight, atomic number, atomic composition
Calculate concentration of thiosulfate ion, S2O3^2-, when 1.00 mL of .00500 M Na2S2O3 are added to experiment.
Use of MO-Theory and MO-diagram for Species of Nitrogen, N2 Nitrogen, N2, can ionize to form N2+ or add an electron to give N2-.
Calculate the mass of propylene glycol (C3H8O2) that must be added to 0.340 kg of water to reduce the vapor pressure by 2.88 torr at 40 °C.
Many dyes used in food products are classified a hazardous chemicals in their pure form. Why then can they be safely used in those food products?
Measuring Water Hardness.In an experiment for measuring water hardness in a water sample
Calculating volume of water evaporated.A 230mL sample of a 0.276 M CaCl2 solution was left on a hot plate overnight
General Chemistry - Orbitals and Configuration.Which one of the following configurations depicts an excited oxygen atom?
What would the world be like where water is as dense as a solid rather than a liquid?" Ideas occur.
What are the characteristic chemical differences between metals and non-metals.
What would would the steps to find the concentration of sodium chloride in the final solution if 24.34 mL of 0.113 M BaCl2 completely reacts.
A 0.500-g sample of CaC2 is added to a coffee cup calorimeter containing 75.0 mL of water at 25.0°C.
Calculate the number of moles of aluminum in a solution containing 10 grams sample.
A recycling plant has chips of hight density poly(ethylene) (HDPE, d=0.92g.mL) used for plastic bottles and poly(vinylchloride).
How many grams of a glucose are in 1 liter of 10% mass/vloume glucose solns?How many grams of NaCl are needed to make a molar solution of 2 liters?
A sheet of metal has the dimensions 5mm, 25 cm, 55cm and its mass is 14.7kg. Using the densities of metals, can you definitely tell what metal this is? How?
Chemical Precipitation Calculations. Precipitation Calculations. Will a precipitate of calcium sulfate (Ksp = 2.4 x 10-5)
Dilution Processes Examined of a Corrupt Barman.A corrupt barman attempts to prepare 100ml of some drink by mixing
Would a comparison of a can (12oz) of soda with a 16oz. bottle of beer, both of different masses be valid when considering their respective densities?
Find the proportionality constant, ie., normalize the function.Calculate the expectation values of X and X^2 for n=1 and n=2.
What would be expect to observe if KHCO3 reacted with HBr? What test would be performed to identify the product?
Calculate the acceleration due to gravity if your 72 kg mass exerts a force of 18 pounds on the planet's surface.
While chlorofluorocarbons (CFC) are compounds that seem incredibly useful in industry, they also seem to wreak havoc on the ozone layer.
What mass of NaCl is required to prepare enough HCl to fill a 340. mL cylinder to a pressure of 151 atm at 20.0 degrees Celsius.
Suppose you were given samples of two different liquids. Describe how you would determine which one is more voliatile.