Match the following type of reactions to the correct equation.
pb(no3)2 + 2hcl --> pbcl2 + 2hno3
2c2h6 + 7o2 --> 4co2 + 6h2o
ca + 2hcl --> cacl2 + h2
h2o + co2 --> h2co3
caco3 --> cao + co2

these are the choices for each they can be used once
decompitiontion
single replacement
synthesis
combustion
double replacement

Can someone me with 1 to 4 plz. fast

What three things determine the shape and size of a puddle when water is poured out onto a surface

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean