Ask Question, Ask an Expert


Ask Chemistry Expert

To find the % by mass of a compound in a given sample.

Dissolving 3.00 g of an impure sample of calcium carbonate in hydrochloric acid produced 0.656 L of carbon dioxide (measured at 20degrees C and 792mm/Hg). find out the percent by mass of calcium carbonate in the sample. State any assumptions.

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M919083

Have any Question? 

Related Questions in Chemistry

You are provided with 200ml of 05moll-1 hydrochloric acid

You are provided with 200ml of 0.5molL-1 hydrochloric acid in which has been dissolved in a small quantity of anhydrous sodium carbonate. When titrated, 25ml of this solution requires 20.5ml of 0.5molL-1 sodium hydroxide ...

A ground state h-atom absorbs a photon of wavelength 9491

A ground state H-atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energylevel. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and a second to ret ...

1 what is the purpose of making derivatives of unknowns2

1.) What is the purpose of making derivatives of unknowns? 2.) Give three reasons why acetone might interfere with your results. 3.) An unknown sample does not react with 2,4-dinitrophenylhydrazine reagent, but a color c ...

The following reaction takes place at a certain elevated

The following reaction takes place at a certain elevated temperature: Fe 2 O 3 (s) + 3CO(g) → 2Fe(l) + 3CO 2 (s) What is the percent yield of iron if 50.1 g Fe 2 O 3 in excess CO produces 19.5 g Fe? The M.W. of Fe 2 O 3 ...

When 100 moles of hig is sealed in 100l flask at 225

When 1.00 moles of HI(g) is sealed in 1.00L flask at 225 degrees Celcius, it decomposes until the equilibrium amount of I2(g) is 0.182 moles. Calculate Keq using this information. The decomposition reaction is HI(g)=I2(g ...

Potassium sulfate is commonly used in fertilizers an

Potassium sulfate is commonly used in fertilizers. An agricultural researcher in alaboratory measures and weighs a 150.0-g sample of potassium sulfate for herexperiment. The solid sample is dissolved in enough water to m ...

Assignmentthe purpose of this assignmentsubmission of an

Assignment The Purpose of this Assignment Submission of an ePortfolio is required for this class. Your Signature Assignment should address topics of personal interest, societal concerns, local, or even global issues, fro ...

1 perchloric acid is either a broslashnsted-lowry acid or a

1. Perchloric acid is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate acid? 2. Phosphate ion is either a Brø ...

Question 1this is a tandem ms of a tryptic peptide the mass

Question 1: This is a tandem MS of a tryptic peptide. The mass of the intact peptide is 1569.692 Da. a. There are two immonium ions labelled with their mass-to-charge ratio in the spectrum. Label the signals with their s ...

A 010 m fes04 aq solution is electrolyzed between a

A 0.10 M FeS04 (aq) solution is electrolyzed between a magnesium cathode and a platinum anode with a current density of 1.50 mA cm-2.The hydrogen over potential is 0.60 V. What will be the concentration of Fe2+ions when ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro