Use Hess's Law and equations B and C to find the enthalpy change for equation A. A) 2 C2H4 + H2O à C4H9OH ΔH = ? B) 2 C2H4 + 6 O2 à 4 CO2 + 4 H2O ΔH = - 2822.2 kJ C) 4 CO2 + 5 H2O à C4H9OH + 6 O2 ΔH = 1534.7 kJ

Oxygen and sulfur have similar chemical properties because both elements have six electrons in their outermost electron shells. Indeed, both oxygen and sulfur form molecules with two hydrogen atoms: water and hydrogen sulfide.

For your recrystallization, you will need to make 75% ethanol in water from 95% ethanol in water. Calculate how much 95% ethanol and water you will need to make 20 mL of 75% ethanol. Hint: You may want to use M1V1=M2V2.

When a person uses an iron to remove the wrinkles from a shirt, why does heat travel from the iron to the shirt?

If the percent (mass/mass) for absolute is 6% and the mass of the solution is 300g, what is the mass of the solution?

2. When a teaspoonful of sugar is added to water in a beaker, the sugar dissolves. The resulting mixture is 1) a compound 2) a solution 3) a suspension 4) an emulsion

How does Q compare to Keg? O Q> Keq O Q< Kea OQ = Keg

What is the mass (in grams) of 9.09x10^24 molecules of methanol (CH3OH) ? AND How many moles of N are in 0.183g of N2O?

What are the basic building blocks of matter? A) molecules B) atoms C) electrons D) compounds

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?