Which of these reactions involves an acid and a covalent base?
a. hf + koh → h2o + kf
b. h2so4 + 2naoh → na2so4 + 2h2o
c. hno3 + al(oh)3 → al(no3)3 + h2o
d. h2so4 + 2h2o → 2h3o+ + so42–
e. chemical equilibrium

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules

What is the percent by mass of magnesium sulfate in mgso4.7h2o