Question

Galena is the common name of a lead and sulfur mineral. 4.68 grams of galena contains...

Galena is the common name of a lead and sulfur mineral. 4.68 grams of galena contains 4.03 grams of lead. Calculate the mass % and mass fraction of both lead and sulfur in galena

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

mass of galena PbS = 4.68g

mass of lead Pb        = 4.03g

mass of sulfur S   = mass of PbS - mass of Pb

                             = 4.68-4.03   = 0.65 g

mass percentage of Pb   in galena = 4.03*100/4.68   = 86%

mass percentage of S in galena    = 0.65*100/4.68    = 14%

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 1.27g sample of galena, a mineral of lead and sulfur, is found to contain 1.10g...
A 1.27g sample of galena, a mineral of lead and sulfur, is found to contain 1.10g of lead. How many grams of sulfur does another sample of galena, with a mass of 3.85g contain?
Lead metal can be extracted from a mineral called galena, which contains 86.8% lead by mass....
Lead metal can be extracted from a mineral called galena, which contains 86.8% lead by mass. A particular ore contains 68.5% galena by mass. If the lead can be extracted with 92.5% efficiency, what mass of ore is required to make a lead sphere with a 8.00 cm radius?
Smelting of ores to produce pure metals is an atmospheric source of sulfur dioxide. Part A...
Smelting of ores to produce pure metals is an atmospheric source of sulfur dioxide. Part A Galena, the most common mineral of lead is primarily lead(II) sulfide (PbS). The first step in the production of pure lead is to oxidize lead sulfide into lead(II) sulfite (PbSO3). Lead(II) sulfite is then thermally decomposed into lead(II) oxide and sulfur dioxide gas. Balance the following equation. PbSO3(s)⟶PbO(s)+SO2(g) Express your answer as a chemical equation. Identify all of the phases in your answer.
65.) Coal is a mineral of fossilized carbon which is used as fuel and contains carbon,...
65.) Coal is a mineral of fossilized carbon which is used as fuel and contains carbon, hydrogen, sulfur, oxygen and nitrogen. Anthracite, a high grade, high luster, hard and compact variety of coal, contains about 92.1 percent carbon. [2 pt.] a. How much carbon (in grams) is present is a 200 kg sample of anthracite? b. How many atoms of carbon are present in this sample? c. How many grams of other impurities are present in the coal sample?
A compound of molar mass 182 contains only carbon, hydrogen, sulfur, and bromine. Analysis shows that...
A compound of molar mass 182 contains only carbon, hydrogen, sulfur, and bromine. Analysis shows that a sample of the compound contains six times as much carbon as hydrogen, by mass. Calculate the molecular formula of the compound
The mineral hausmannite mass, in megagrams, which contains both manganese (II) and manganese (III) ions, is...
The mineral hausmannite mass, in megagrams, which contains both manganese (II) and manganese (III) ions, is formed from heating manganese (IV) oxide to 890 degrees Celsius. 3MnO2(l)--->Mn3O4(s) + O2(g) a) what is the maximum mass, in megagrams, of Mn3O4 that can be formed form the decomposition of 31.85 Mg of manganese (IV) oxide, MnO2? b) If 24.28 Mg of Mn3O4 is isolated in the decomposition reaction of 31.85 Mg of manganese (IV) oxide, MnO2, what is the percent yield?
1. Hydrogen sulfide is composed of two elements, hydrogen and sulfur. In an experiment,6.600g hydrogen sulfide...
1. Hydrogen sulfide is composed of two elements, hydrogen and sulfur. In an experiment,6.600g hydrogen sulfide is fully decomposed into its elements. a. if 0.384g og hydrogen is obtained in this experiment, how many grams of sulfur must be obtained? b. what fundamental law does this experiment demonstrate? 2.only two isotopes of cooper occur naturally 65Cu(atomic mass=62.9296 amu; abundance=69.17%) and 65Cu(atomic mass=64.9278 amu;abundance=30.83%). calculate the average atomic mass cooper. 3. calculate the following quantities a. mass in grams of 1.223...
± Common-Ion Effect on Solubility for Lead Thiocyanate Lead thiocyanate, Pb(SCN)2, has a Ksp value of...
± Common-Ion Effect on Solubility for Lead Thiocyanate Lead thiocyanate, Pb(SCN)2, has a Ksp value of 2.00×10−5. Part A Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate the solution can hold. Express your answer with the appropriate units. SubmitHintsMy AnswersGive UpReview Part Common-Ion Effect Consider the dissolution of AB(s) : AB(s)⇌A+(aq)+B−(aq) Le Châtelier's principle tells us that an increase in either [A+] or [B−] will shift this equilibrium...
A 5.000 g mixture contains strontium nitrate and potassium bromide. Excess lead(II) nitrate solution, Pb(NO3)2 (aq)...
A 5.000 g mixture contains strontium nitrate and potassium bromide. Excess lead(II) nitrate solution, Pb(NO3)2 (aq) is added to precipitate out 0.7822 grams of PbBr2 (s). What is the percent by mass of potassium bromide in the mixture? What is the percent by mass of strontium nitrate in the mixture?
Calculate the amount of PbSO4 in grams formed when a lead-acid car battery is discharged by...
Calculate the amount of PbSO4 in grams formed when a lead-acid car battery is discharged by 80%. the battery has an emf of 12 V and capacity of 40 Ah. Compare results to total mass of battery where the standard weight of a USA car battery is 40 lb.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT