What type of reaction is this in terms of single displacement or double displacement? MgSO4 (aq) + Na2CO3 (aq) → MgCO3 (s) + Na2SO4 (aq)

__can be defined as which velocity changes

Suppose you mix one mole of sulfuric acid (h2so4) with 1 mole of sodium hydroxide(naoh). why does the ph of the solution remain below 7? ( explain so i can get better understanding! )

Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.