Which statement is most true about technological design? Group of answer choices

There may be multiple solutions to a single problem.

There is no room for creativity in design.

There is only one single best solution to most problems.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Classify this reaction: 2al+n2-> aln.

In which reaction is precipitation occurring?