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A toothpaste contains 0.24 by mass sodium fluoride used to prevent dental caries and 0.30 by mass triclosan , a preservative and antigingivitis agent. One tube contains 125 toothpaste.
How many fluoride atoms are in the tube of toothpaste?How many grams of sodium ion are in 2.40 toothpaste?
In an earlier problem we described the reaction of ammonia with oxygen to form nitrogen monoxide, NO.
There are 250g of Acetic Acid and 250g of Aluminum Hydroxide. What is the maximum amount of Aluminum Acetate that can be produced and which ingredient is the limiting reactant
A buffer is prepared by mixing 615 mL of 0.50 M formic acid, HCHO2, and 385 mL of 0.50 M sodium formate, NaCHO2. Calculate the pH.
500 ml solution of benzoic acid (ka=6.6e-5) has a ph of 2.88. What is the molarity of benzoic acid
The following equilibrium concentrations were measured at 800 K:[SO2]=3.0*10^-3M; [O2]=3.5*10^-3M; [SO3]=5.0*10^-2M. Calculate the equilibrium constant at 800K for each of the following reactions.
How many grams of NaN3 are required to produce 340 L of nitrogen gas if the gas has a density of 1.25 g/L?
A 515- sample of unknown solution reacts completely with to form 20.1 . What was the concentration of the solution?
if a bottle of nail polish remover contains 158 of acetone how much heat would be released by its complete
The enthalpy change for the reaction of 50.0ml of ethylene with 50.0ml of H2 at 1.5atm pressure (problem ^H= 0.31kj. What is the value of ^E
Compound A has the molecular formula C14H25Br and was obtained by reaction of sodium acetylide with 1,12-dibromododecane. On treatment of compound A with sodium amide, it was converted to compound B (C14H24).
Which response includes all of the following substances that are strong electrolytes, and no others. I. LiOHII. Ca(CH3COO)2
Calculate the fraction of space that is occupied by packing spheres in the (a) simple cubic, (b) body-centered cubic, (c) face-centered cubic (close packed) structures
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