chemistry

The active ingredient in some antiperspirants is aluminum chlorohydrate, Al2(OH)5Cl. Analysis of a 2.000-g sample of antiperspirant yields 0.334 g of aluminum. What percent (by mass) of aluminum chlorohydrate is present in the antiperspirant? (Assume that there are no other compounds containing aluminum in the antiperspirant.)

  1. 👍
  2. 👎
  3. 👁
  1. (0.334g/2.000g)*100= ???

    4-significant figures.

    1. 👍
    2. 👎
  2. No. Anonymous has given the % Al in the compound.
    g Al2(OH)5Cl = 0.334g Al x (molar mass Al2(OH)5Cl/atomic mass Al) = ?
    Then % Al2(OH)5Cl = [g Al2(OH)5Cl/2.000)]*100 = ? and it is to 3 s.f. based on the 0.334 g Al.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide gas. Is Al2(CO3)3 ==> Al2O3 + CO2 the right equation? If so, how do you balance this equation?

  2. Math

    A pill weighs 70 mg. 7/9 of the pill is the active ingredient. How many milligrams are in the part of the pill that is not the active ingredient? So if 7/9 is active that means 2/9 is not active. I did 2 divided by 9 which gives

  3. pharmacy tech

    2. How do you determine the number of grams of an active ingredient in a solution based on the percent strength?

  4. Chemistry

    A mixture contains only NaCl and Al2(SO4)3. A 1.45-g sample of the mixture is dissolved in water and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the

  1. science (chem)

    consider the fo9rmula for Al2(SO4)3,which is used in perspirants: a. how many moles of sulfur are present i 3.0 moles of Al2(SO4)3 b. ow many moles of aluminum ions are present in 0.40 mole of Al2(SO4)3 for a and b i multiplied by

  2. Mathematics

    Prove that your recipe makes exactly 10 cups. • Explain the most efficient method for measuring each ingredient using only the following two measuring cups: 1 3 cup and 1 4 cup. You can use one or both of the measuring cups.

  3. chemistry

    an aspirin tablet contains 5.00X10^2 mg of active ingredient. how many grams of ap of active ingredient does it contain

  4. math

    a recipe calls for 1/2 cup of ingredient A for every 1 1/3 cups of ingredient B. You use 4 cups of ingredient A. How many cups of ingredient B do you need?

  1. Chemistry

    Calculate the percentage by mass of the active ingredient in an antacid tablet that weighs 1.36 g if it contains 520 mg of calcium carbonate

  2. chem

    Sulfuric acid can dissolve aluminum metal according to the following reaction. 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 26.8 g . 1.What minimum amount of H2SO4 in

  3. Chemistry

    2Al + 3CuSO4 --> + 3Cu + Al2(SO4)3 * copper(II) sulphate is a hydrate 1.2g of CuSo4 50mL of water 1.0 g of aluminum foil What is the limiting reactant?

  4. chemistry

    On an activity series for metals aluminum is more active than hydrogen. Write the correct reaction to describe putting a piece of aluminum foil (pure aluminum) in 100 mL of hydrochloric acid

You can view more similar questions or ask a new question.