The heat of vaporization of a liquid is 1340 joules per gram. What is the minimum number of joules needed to change 40.0 grams of liquids

Consider this reaction: 3Fe2O3 (s) + CO (g) → 2Fe3O4 (s) + CO2 (g). Which of the following would increase the rate of the reaction?

Determine the number of moles of oxygen in 3.20 moles of sodium hydrogen phosphate.

Which are the reactants for mg (s) + o2 (g) = mgo (s)

How many grams of nico3 will be formed when a 0.300 m nicl2 solution reacts completely with 14.3 ml of a 0.191 m na2co3 solution?

Determine the number of unpaired electrons expected for [Fe (NO2) 6]3-and for [FeF6]3 - in terms of crystal field theory.

Observe: Change the Surface area from Minimum to Maximum. You can imagine that a solid reactant has been dissolved in a liquid. How does this change how many Reactant B molecules are exposed to Reactant A?

When placed in a 200-mL square box, a substance has a spherical shape and has a volume of 75 mL When placed in a 200-mL circular tube, the same amount of that same substance has a spherical shape and a 75-mL volume.

What is the example to the word camouflage

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196 grams of H2SO4

The mass flow rate of gasoline leaving a refinery is 1610 kg/min. The specific gravity of a gasoline is 0.700. A retail gasoline pump is able to fill a 20.0 gallon automobile tank in 1.80 minutes.