Question

In: Chemistry

A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to contain...

A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to contain 0.690 g Ca and 1.222 g Cl. Calculate the mass percent composition of Ca and Cl in calcium chloride.

Solutions

Expert Solution

mass of Ca = 0.68 g

mass of Cl=1.222 g

total mass = 1.912 g

mass percent of Ca = mass of Ca*100 / total mass

                                     = 0.69*100/1.912

                                     =36.09 %

mass percent of Cl =100 - mass percent of Ca

                                     = 100 - 36.09

                                      =63.91 %


Related Solutions

A 9.59 g sample of calcium sulfide was decomposed into its constituent elements, producing 5.33 g...
A 9.59 g sample of calcium sulfide was decomposed into its constituent elements, producing 5.33 g of calcium and 4.26 g of sulfur. Which of the statements are consistent with the law of constant composition (definite proportions)? The mass percentage of calcium plus the mass percentage of sulfur in every sample of calcium sulfide equals 100%. The ratio of calcium to sulfur will vary based on how the sample was prepared. The mass ratio of Ca to S in every...
A sample of XeO4 was fully decomposed into its elements, and the resulting gas was collected...
A sample of XeO4 was fully decomposed into its elements, and the resulting gas was collected over water at 29°C. If the total pressure of the collected gas was 750 torr, and the vapor pressure of water at 29°C is 30.0 torr, what was the partial pressure of O2 gas in the flask?
1) Ringer's injection contain 0.86% of sodium chloride, 0.03% of potassium chloride, and 0.033% of calcium...
1) Ringer's injection contain 0.86% of sodium chloride, 0.03% of potassium chloride, and 0.033% of calcium chloride dihydrate. Calculate the sodium, potassium, calcium, and chloride content in mEq/L. 2). If a liter of an intravenous fluid contains 5% dextrose and 34 mEq sodium (as NaCl), calculate the percent strength of sodium chloride in the solution. 3). A flavored potassium chloride packet contains 1.5 g of potassium chloride. Hoe many milliequivalents of potassium chloride are represented in each packet? 4). How...
An aqueous solution containing sodium chloride (NaCl) and calcium chloride (CaCl2) is found to have a...
An aqueous solution containing sodium chloride (NaCl) and calcium chloride (CaCl2) is found to have a density of 1.043 g/mL. The results of an analysis indicate that the calcium concentration is 8.3 g/L and the sodium concentration is 12.2 g/L. What is the mole fraction of each component in this solution? Molar mass of Na = 22.99 g/mol Molar mass of Cl = 35.45 g/mol Molar mass of Ca = 40.078 g/mol
A gaseous hydrogen and carbon containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass.
  A gaseous hydrogen and carbon containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL of the gas, measured at 556 mmHg and 25 °C, was found to be 0.275 g. What is the molecular formula of the compound?  
A 2.95 g sample of an unknown chlorofluorocarbon is decomposed and produces 579 mL of chlorine...
A 2.95 g sample of an unknown chlorofluorocarbon is decomposed and produces 579 mL of chlorine gas at a pressure of 756 Torr and a temperature of 298 K. Part A What is the percent chlorine (by mass) in the unknown chlorofluorocarbon?
4. A 0.3634 g sample of ore containing calcium is dissolved and the calcium ions are...
4. A 0.3634 g sample of ore containing calcium is dissolved and the calcium ions are precipitated as CaC2O4. The CaC2O4 precipitate is filtered, washed and redissolved in acid. The pH of the resulting Ca2+ solution is adjusted. A 25.00 mL volume of 0.0376 M EDTA is added. The excess EDTA is back-titrated to the end point, requiring 23.08 mL of 0.0188 M Mg2+ solution. a) Write a balanced chemical equation for the EDTA reactions that occur as part of...
When 28 g of calcium chloride was dissolved in 100g water in a coffee-cup calorimeter, the...
When 28 g of calcium chloride was dissolved in 100g water in a coffee-cup calorimeter, the temperature rose from 25* Celcius to 41.3. What is the enthalpy change for this process? Assume the solution is equal to the specific heat of water.
A hydrated nickel chloride compound was found to contain 24.69% Ni, 29.83% Cl, and 45.48% water....
A hydrated nickel chloride compound was found to contain 24.69% Ni, 29.83% Cl, and 45.48% water. Determine the empirical formula of this hydrated compound
A salt solution is found to contain 18.5% Strontium chloride (SrCl2) by mass. Calculate te mole...
A salt solution is found to contain 18.5% Strontium chloride (SrCl2) by mass. Calculate te mole fractions of SrCl2 and H2o. Also calculate the number of Cl atoms in 150 grams of the solution.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT