In the reaction c7h16 + __o2 → 8h2o + 7co2, what coefficient should be placed in front of o2 to balance the reaction?
select one:
a. 7
b. 8
c. 11
d. no coefficient is needed

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates