A chemical reaction has an increase in entropy and a decrease in enthalpy. What is known about the spontaneity of the reaction?

What is the value of n in ch3 (ch2) nch3 if the name of the hydrocarbon is heptane?

Rainwater can have a ph as low as 3, meaning that it is very a. basic b. salty c. acidic d. neutral

What is the concentration of a solution of 10 moles and 5.0 liters of salution?

What metal melts at room temperature

An 7.50 mL aliquot of a 125 ppm stock Red 40 dye solution was diluted to a final volume of 25.0 mL with deionized water. What is the concentration of the dilute Red 40 dye solution (in ppm) ?

Given the balanced equation representing a reaction: 4Al (s) + 3O2 (g) - - >2Al2O3 (s) Which type of chemical reaction is represented by this equation? (1) double replacement (2) single replacement (3) substitution (4) synthesis

A helium balloon has a volume of 735 mL when it is at ground level. The balloon is transported to an elevation of 5km, where the pressure is only 0.8atm. At this altitude the gas occupies a volume of 1286mL.

If a mixture contains 75% of one compound and 25% of its enantiomer what is the e. e

White light, which consists of all frequencies, forms which type of spectrum?

Identify each statement as true or false. Rewrite false statements to make them correct. Sedimentary rock can be formed from changes in igneous rock, but igneous rock cannot be formed from changes in sedimentary rock.