Answer:
Condensation is when heat turns to water vapour
Melting is when solid turns to liquid
Freezing is when liquid turns to solid
Sublimation is when solid turns to gas without passing through the liquid state
2HCL + __ Zn --> ZnCl2 + H2
i think that's right, not exactly sure.
Green plants absorb some of the sunlights energy
Answer:
a. name of element is copper it's proton is 29 neutron is 34 and electron is 29
b.name of element is sodium it's proton is 11 neutron is 12 and electron is 11
c.name of element is chlorine it's proton is 17 neutron is 18 and electron is 17
d.name of element is iron it's proton is 26 neutron is 30 and electron is 26
Answer:
Pentane » Hexane » Hexanol
Explanation:
Pentane and Hexane are simple molecular structured with discrete molecules having weak vanderwaals forces of attraction. But Hexane has high molecular mass than pentane hence pentane has lower boiling point than Hexane.
Hexanol has hydrogen bonds between highly electronegative oxygen atom and the hydrogen atom which break on high heat energy application hence it has high boiling point.
