People breathe in oxygen molecules from the air and exhale carbon dioxide molecules. because of this, the air is full of carbon dioxide and oxygen mixed together. what is this an example of?

a.) an increase in entropy

b.) an increase in oxidation reactions

c.) an increase in enthalpy

d.) an increase in evaporation

hellppp pl! for sure who knows the answer

~apex~

all eukaryotic cell have mitochondria : )

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation: