4 Write word equations for the following chemical reactions.
(a) Octane gas is burnt with oxygen in a car engine
to produce carbon dioxide and water.
(b) Sodium metal reacts with chlorine gas to form
sodium chloride.
(c) Hydrogen gas and oxygen gas combine to form
water.
(d) Zinc metal dissolves in hydrochloric acid to
form hydrogen gas and zinc chloride.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released