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a 10.00g sample of toothpaste contaning stannous fluoride gives0.145g precipitate of stannous phosphate.what is the percentage of snf2 in the toothpast sample?
NiCl2(aq)+ 2NaOH(aq)---> Ni(OH)2(s)+ 2NaCl(aq) how many grams of Ni(OH)2 are produced from the reaction of 35.0 mL of a 1.75M NaOH solution and excess of NiCl2.
when a metal was exposed to light at a frequency of 4.63*10^15 Hz, electrons were emitted with a kinetic energy of 3.10*10^-19 J.
Two particles with charges q1 and q2 are separated by distance d. Rank these scenarios according to the magnitude of the electrostatic (coulombic) potential energy.
Calculate the pressure of 4 g of nitrogen gas in a 1 L container at 20.0 ?C.
What is the percent yield for iron if the reaction of 65.0 of iron(III) oxide produces 45.0 of iron if Iron(III) oxide reacts with carbon monoxide to produce iron and carbon dioxide.?
A modern chealting agent used for this purpose is succimer (C4H6O4S2). Suppose you are trying to determine the appropriate dose for succimer treatment of lead poisoning.
Calculate the number of grams of sulfuric acid in 0.520 of battery acid if the solution has a density of 1.35 and is 37.4 sulfuric acid by mass.
Chemical Kinetics - Determine the time taken by a reactant to reach a particular concentration
The activation energy for a reaction is found to be 80 kj/mol. calculate the temperature at which the rate will be ten times that of 0 deg. celsius.
Equilibrium between the composition of Hydrogen sulphide in the gaseous and liquid phases can be represented as Yn=48.3Xn.
Using the given reduction potential determine what is the voltage for these given electrochemical cell
The specific internal energy of helium at 300k and 1 atm pressure is 3800j/mol and the specific molar volumeat thesame temp. and pressure is 24.63l/mol.
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