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A toothpaste contains .24% sodium fluoride by mass that is used to prevent dental caries and .30% triclosan. toothpaste net mass is 119 grams.
Calculate the number of moles of sodium fluoride
Mass of the fluoride ions in the tube
How many molecules of triclosan are in a tube of this toothpaste?
the value of the molar absorptivity is 4.84*10^3 M^-1 cm^-1 for K2CrO4 at that wavelength. what is the concentration of the solution
Alkenes can be converted to alcohols by reaction with mercuric acetate to form a ?-hydroxyalkylmercury(II) acetate compound, a reaction called oxymercuration. Subsequent reduction with NaBH4 reduces
an ethylene gas torch reqires 3200 L of gas at 3.00 atm. what will be the pressure of the gas if ethylene is supplies by a 250. L tank?
In the series HF, HCl, HBr, HI, which is the strongest acid?
A gaseous oxide of nitrogen has an empirical formula of NO2. A 0.556 g sample of this gas in a 250. mL container at 24ºC exerts a pressure of 44.8 cm Hg. What is the molecular weight of the gas? What is the molecular formula of the gas
A sample of 87 mg of an ideal gas a 0.600 bar pressure has its volume doubled and its absolute temperature tripled. Find the final pressure.
A solution containing 16.9 g of nonvolatile molecular compound in 250. g of water has a freezing point of -0.744°C. What is the molar mass of the substance?
They are used as foaming agents, propellants, and refrigeration fluids. Freons are controversial because of the damage they do to the ozone layer in the stratosphere. A 5.87 g sample of a particular freon in a 3.45 L bulb at 25.00°C has a pressure..
Butyric acid (a monoprotic acid) is responsible for the foul smell of rancid butter. the pKa of butyric acid is 4.84. calculate the pH of a 0.05M sloution of sodium butyrate
Calculate the heat released when 2.00L of Cl2(g) with a density of 1.88 g/L react with an excess of sodium metal as 25°C and 1 atm to form sodium chloride. [H°f(NaCl) = -411.0 kJ/mol
Methyl acetate, CH3COOCH3, reacts in basic solution to form the acetate ion, CH3COO-, and methanol, CH3OH. Assuming the reaction is a second order with respect to the methyl acetate, find the concentration of the methyl acetate after the reaction ..
determine the minimum concentration of the percipitation the cation from the solution of the left. 0.035 M BaNO3; Naf.
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