What is the percentage of snf2 in the toothpaste sample

Assignment Help Chemistry
Reference no: EM13169730

Based upon 3 SnF2 (ag) + 2 K3PO4 (aq)> Sn3(PO4)s (s) + 6 KF (aq), a 10.000 gram sample of toothpaste containing stannous fluoride gives a 0.145 gram precipitate of stannous phosphate. What is the percentage of SnF2 in the toothpaste sample?

Reference no: EM13169730

Questions Cloud

Explain what is the change in enthalpy : what is the change in enthalpy for 2.854 moles of the liquid?
What mass of substance must evaporate in order to freeze : What mass of this substance must evaporate in order to freeze 250 of water initially at 25? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
What is the volume of the diluted h2so4 solution : 120.0 mL sample of a 0.81 M H2SO4 solution is diluted with enough water to reduce the concentration of the solution to 0.50 M. What is the volume of the diluted H2SO4 solution.
What is the quantity in grams of formic acid and sodium : what is the quantity in grams of formic acid and sodium formate necessary to make 500 mL of a buffer that has a formic acid concentration of .75 M and a sodium formate concentration of .75 M?
What is the percentage of snf2 in the toothpaste sample : Based upon 3 SnF2 (ag) + 2 K3PO4 (aq)> Sn3(PO4)s (s) + 6 KF (aq), a 10.000 gram sample of toothpaste containing stannous fluoride gives a 0.145 gram precipitate of stannous phosphate. What is the percentage of SnF2 in the toothpaste sample?
What is the gas pressure isside a bulb : What is the gas pressure (in atm) inside a 1.89-L bulb that contains 1.56-g of Ne at a temperature of 21.1 C? Be sure to report the units as atm
Calculate the molarity of a solution of glycerol : Calculate the molarity of a solution of glycerol made by dissolving 67.000 mL glycerol at 15 C in enough water to make 320.00 mL of solution.
What mass of naoh is needed to precipitate : What mass of NaOH is needed to precipitate the Cd^{2+} ions from 39.0 mL of 0.550 M Cd(NO3)2 solution?
Calculate the number of grams of fe formed : Calculate the number of grams of Fe formed when 0.100 kg Fe2O3 of reacts.

Reviews

Write a Review

Chemistry Questions & Answers

  Compute the mole fraction of component

The average molecular weight of the protein by gel permeation is 525000 g mass/g mol. Calculate the mole fraction of each component in solution.

  Explain the total volume of the system is increased

Consider the equilibrium represented by the following equation: Heat + H2O(l) H2O(g) in which T=373K, P=101kPa Which of the following will favour the reverse reaction? (a) The total volume of the system is increased

  How much energy (in calories) is needed

The specific heat of fat is 0.45 cal/(g C) and the density of fat is 0.94g/cm^3 . How much energy (in calories) is needed to heat 10cm^3 of fat from room temperature (25 C) to its melting point (35 C).

  What are the molality and mole fraction of solute

What are the molality and mole fraction of solute in a 29.3 percent by mass aqueous solution of formic acid (CH3OH)?

  Explain the correct ph at equivalence to compare

The results below are from a titration lab utilizing 25mL of .1M acetic acid which was titrated with the NaOH solution of volume and molarity shown below. Please show how to get the correct pH at equivalence to compare with indicator change

  Explain the wavelength of microwaves in the oven

A certain microwave oven delivers 702 watts (J/s) of power to a coffee cup containing 67.5 g of water at 25°C. If the wavelength of microwaves in the oven is 9.75 cm

  Finding density of solids and liquids

When calculating the density of your regularly shaped object, which measurement will limit your final result?

  Define ketones also undergo the aldo condensation

KEtones also undergo the aldo condensation, although a succesful reaction often requires "enhanced" conditions, since the addition involves an unfavorable equilibrium constant.

  How many milliliters of a stock solution of kno3 you need

How many milliliters of a stock solution of 2.00M KNO3 would you need to prepare 100.0 mL of 0.150M KNO3?

  Compute the mass of propylene glycol

Calculate the mass of propylene glycolC3H8O2 that must be added to 0.320kg of water to reduce the vapor pressure by 2.88torr at 40C Pressure H2O 40C 55.3torr

  Which element is most likely to be element x

An unknown element, X, reacts with chlorine to form a compound with the formula XCl2. Which element is most likely to be element X?

  What is the molar concentration of fe2+

If it takes 30.0 mL of 0.0250 M K2Cr2O7 to titrate 15.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd