A 0.454-g sample is combusted to produce 0.165 g of water and 0.624 g of carbon...

A 0.454-g sample is combusted to produce 0.165 g of water and 0.624 g of carbon dioxide. Calculate the experimental mass % of C and H in the unknown liquid used in the experiment.

Expert Solution

queen_honey_blossom answered 2 years ago

CxHy completely combusted to produce 344 mg carbon dioxide and 56.2 mg of water. What is...

CxHy completely combusted to produce 344 mg carbon dioxide and 56.2 mg of water. What is its empirical formula?

A 3.10 g sample of methane, CH4, is combusted in a calorimeter. The calorimeter and water...

A 3.10 g sample of methane, CH4, is combusted in a calorimeter. The calorimeter and water combined have a heat capacity of 42.30 kJ/K. The observed temperature rise is 4.05 °C. Calculate the heat of combustion of methane in kJ/mol. The products of the reaction are water and carbon dioxide.

a. Pentane (200 g) is combusted to produce CO2. Derive and balance the chemical equation for...

a. Pentane (200 g) is combusted to produce CO2. Derive and balance the chemical equation for this reaction. List the oxidation state of all species. (3 points) b. All of the CO2 produced in the combustion is taken up by plants during photosynthesis to produce glucose and oxygen. Derive the balanced equation. (3 points) c. How many grams of glucose are produced from the 200 g of pentane combusted? (3 points)

A 1.00 g sample of coffee beans was completely combusted in a bomb calorimeter (Ccal =...

A 1.00 g sample of coffee beans was completely combusted in a bomb calorimeter (Ccal = 62.1 J/o C) and caused the temperature of the water in the calorimeter to increase from 24.66 K to 27.22 K. What is the change in temperature of the water in degrees Celsius? The heat released by the coffee beans was: ? One cup of black coffee is made from 237 g of coffee beans. How many Calories are in one cup of black...

A 0.623 g sample of vanillin (C8H8O3, MM = 152.15) is combusted in a bomb calorimeter...

A 0.623 g sample of vanillin (C8H8O3, MM = 152.15) is combusted in a bomb calorimeter with a heat capacity of 5.89 kJ/ºC. Given that the heat of combustion of vanillin is -3.83x103 kJ/mol, what must the temperature change have been in the bomb calorimeter?

A. When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature...

A. When a 0.235-g sample of benzoic acid is combusted in a bomb calorimeter, the temperature rises 1.644 ∘C . When a 0.275-g sample of caffeine, C8H10O2N4, is burned, the temperature rises 1.585 ∘C . Using the value 26.38 kJ/g for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume. B. Assuming that there is an uncertainty of 0.002 ∘C in each temperature reading and that the masses of samples...

Propane gas, C3H8, reacts with oxygen to produce water and carbon dioxide. C3H8(g)+5O2(g)→3CO2(g)+4H2O(l) Part A How...

Propane gas, C3H8, reacts with oxygen to produce water and carbon dioxide. C3H8(g)+5O2(g)→3CO2(g)+4H2O(l) Part A How many moles of CO2 form when 3.70 mol of C3H8 completely reacts? Part B How many grams of CO2 are produced from 17.4 g of propane gas? Part C How many grams of CO2 can be produced when 43.4 g of C3H8 reacts?

Given that a 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0...

Given that a 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl, what is the volume of HCl in mL at -the initial pH of the solution (pH = 11.23) -the pH at the 25%-neutralization point of the first neutralization (10.26) -the pH at the 50%-neutralization point of the first neutralization (9.78) -the pH at the 75%-neutralization point of the first neutralization (9.30) -the pH at...

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of...

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl. A.) What is the initial pH of the solution, before any titrant is added? B.) The percent neutralization points for a titration indicate the percent of the reagent that has reacted. For example, at the 25% neutralization point for piperazine, 75% (0.75×[Pip]) of the base remains, and 25% is neutralized to form PipH+. Calculate the pH...

A 25 g piece of metal is dropped into 100.0 g sample of water. The water...

A 25 g piece of metal is dropped into 100.0 g sample of water. The water temperature drops by 5.0 C. The piece of metal's temperature increases by 85 C. What is the specific heat of this piece of metal? (The specific heat of water is 4.18 J/gC)

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