Predict the effects of an increase in pressure for each reaction.
Answer choices: increased rate, decreased rate, no change in rate
1. N2(g) + 3H2(g) -> 2NH3(g)
2. SnO2(s) + 2H2(g) -> Sn(s) + 2H2O(g)
3. AgNO3(aq) + Cu(s) -> CuNO3(aq) + Ag(s)
4. 2SO3(g) -> 2SO2(g) + O2(g)
5. Na2CO3(s) + 2HCl(aq) -> CO2(g) + H2O(l) + 2NaCl(aq)

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.