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An irregularly shaped piece of metal with a mass of 114 g was placed into a graduated cylinder that contained 25.00 mL of water.
After the first few ml's of the filtrate were discarded, 50ml of the filtrate was acidified with HNO3 and treated with 5ml aliquot of 0.1055M AgNO3
When a chemical equation is balanced, it will have a set of whole number coefficients which cannot be reduced to smaller whole numbers.
Explain how to prepare 25 liters of a 0.10 M BaCl2 solution, starting with solid BaCl2.
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm
The phosphine that is produced by the reaction of water on calcium phosphide contains an impurity, another gaseous hydride of phosphorus.
Fill in the blanks and please explain the steps to reach the solution. Mass of assembly + salt+ water after 4th addition: 39.05 g
Explain the source of the blue color of the solution after the reaction. Why was the blue color not apparent in the original solution of AgNO3?
A 2.115-g sample containing CuCO4 and excess KI is titrated with 32.55ml of o.1214M solution of NA2S2O3.
Avogradro's number (6.022 x 10^23 atoms/mol) is a useful number that can be used to calculate a number of different values.
The alcohol content of hard liquor is normally given in terms of the "proof", which is defined as twice the percentage by volume of ethanol (C2H5OH) present.
The volume of an m&m candy is .65 mL. What volume in cubic meters, would one mole of m&m candies occupy?
A package of M&M candies contains 50 pieces. What fraction of a mole is this? Express in both normal and scientific notation.
Network Representation and Linear Transformation.The distribution system for a company consists of two plants, three warehouses
The sun has estimated mass of 2x10^36 and the sphere is of average radius of 6.96x10^5 km, calculate the average density of the sun in units of kg/km^3
A 0.250g sample of a compound containing only carbon and hydrogen whose molecular weight is 16g/mol is burned in oxygen to yield 0.784g CO2 and 0,642g H2O.
How many grams of oxyen are consumed, how many grams of CO2 & H2O are produced?
The fluoride ion is very toxic. Not only does it interfere with glycolysis, but if forms an insoluble precipitate with calcium ions (Ksp = 4.13 x 10-11).
A utility company serves three cities from its three power plants. The power plant capacities and energy delivery costs per unit (in $) from each plant
Explain what is meant by a Scientific Method.Write your answer/response in detail with examples and facts and figures
Determining which solutions will form a precipitate when mixed together
If the molar mass of a binary compound has a molar mass between 27 and 28 and contains 78.14% boron and 21.86% hydrogen.
Whiskey can have an alcohol content in the 50 to 60% range whereas the upper limit for alcohol content in beers and wines is only about 10%. Why is this?
How would you describe how to separate a mixture of oil, sand, and saltwater?
Calculate the frequency, in units of "per second", of light with a wavelength of (a) 540 nm, and (b) 650 nm.