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Get college assignment help at uniessay writers What is the percentage by mass of chlorine in DDT, C14H9Cl5?

Iron pyrite (FeS2) is the form in whichmuch of the sulfur

Iron pyrite (FeS2) is the form in whichmuch of the sulfur exists in coal. In the combustion of coal, oxygen reacts with iron pyrite to produce iron(III) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to acid rain. What mass of Fe2O3 is produced fromthe reaction is 75 L of oxygen at 2.43 atm and 159◦C with an excess of iron pyrite?

How much potassium chlorate is needed to produce 20. 0 mL

How much potassium chlorate is needed to produce 20. 0 mL of oxygen gas at 670 mm Hg and 20 degrees celcius?

0.250- sample of a magnesium-aluminum alloy dissolves completely in an excess

0.250- sample of a magnesium-aluminum alloy dissolves completely in an excess of . When the liberated is collected over water at 29 and 752 , the volume is found to be 341 . The vapor pressure of water at 29 is 30.0 .

If a bottle of nail polish remover contains 183 mL of

If a bottle of nail polish remover contains 183 mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 {rm{g}}/{{rm{mL}}}.

Name Cr(OH)2 by the Stock (IUPAC) System.

Name Cr(OH)2 by the Stock (IUPAC) System.

If 5.4 kcal of heat is added to 1.00 kg of

If 5.4 kcal of heat is added to 1.00 kg of water at 100 degrees celsius, how much steam at 100 degrees is produced? Please show your work for your answer.

If 18.4 mL of 0.800 M~rm HCl solution are needed to

If 18.4 mL of 0.800 M~rm HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?

a mixture of gases containing .20 mol of SO2 and .2

a mixture of gases containing .20 mol of SO2 and .2 mol of O2 in a 2.0L flask reacts to form SO3. If the temperature is 25C, what is the pressure in the flask after reaction is complete?

How do you determine the number of representative particles in 2.3

How do you determine the number of representative particles in 2.3 moles of CaCO3?

The pressure on a balloon holding 350 mL of an ideal

Get college assignment help at uniessay writers The pressure on a balloon holding 350 mL of an ideal gas is increased from 254 torr to 1.00 atm. What is the new volume of the balloon (in mL) at constant temperature?

Arrange the following from the smallest number of representative particles to

Arrange the following from the smallest number of representative particles to the largest number of representative particles. (a) 1.09 1025 atoms Zn (b) 3.59 mol Fe (c) 6.77 1022 molecules glucose (C6H12O6)

calculate the percent carbon in capsaicin, c18h27no3, the compound that gives

calculate the percent carbon in capsaicin, c18h27no3, the compound that gives the hot taste to chili peppers

Calculate the theoretical yield of C2H5CL when 139g of C3H6 reacts

Calculate the theoretical yield of C2H5CL when 139g of C3H6 reacts with 202g of Cl2 , assuming that C2H6 and CL2 react only to form C2H5Cl and HCL .

A calorimeter contains 18.0 mL of water at 15.0 degrees celcius.

A calorimeter contains 18.0 mL of water at 15.0 degrees celcius. When 1.70 g of X (a substance with a molar mass of 80.0 g/mol ) is added, it dissolves via the reaction and the temperature of the solution increases to 28.5 degrees celcius. Calculate the enthalpy change,change in heat , for this reaction per mole of X . Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 J/(g.C) and 1.00 g/mL ] and that no heat is lost to the calorimeter itself, nor to the surroundings. Express your answer numerically in kilojoules per mole.

How much heat is required to warm 1.20 L of water

How much heat is required to warm 1.20 L of water from 22.0^circ C to 100.0 ^circ {rm C}? (Assume a density of {1.0;{rm {g}}}/{{rm {mL}}} for the water.)

The given formula is, CH4 2O2 —> CO2 2H20

The given formula is, CH4 2O2 —> CO2 2H20 What mass of carbon dioxide is produced from the complete combustion of 7.50×10^−3g of methane? What mass of water is produced from the complete combustion of 7.50×10^−3g of methane? What mass of oxygen is needed for the complete combustion of 7.50×10^−3g of methane?

How many grams of ethylene are needed to react with 0.138g

How many grams of ethylene are needed to react with 0.138g of H2O ?

scientist wants to make a solution of tribasic sodium phosphate, ,

scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 400 of a solution that has a concentration of ions of 1.00 ?

decomposition of HC2H3O2

decomposition of HC2H3O2

In the reaction CH4 2O2 = CO2 2H2O how

In the reaction CH4 2O2 = CO2 2H2O how many moles of oxygen are required to burn 16.0 g of methane?

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