Positional isomers a. are never named differently. b. are compounds that have different numbers and types of atoms but have similar arrangements. c. have the same properties. d. are compounds that have the same number and types of atoms but are arranged differently.

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.